Answer:
N, P, As, Bi, Mc
Explanation:
Similar chemical properties are usually found within the same column of the periodic table.
Antimony is Sb, which is in column 15.
Therefore all the elements in column 15, including N, P, As, Bi, Mc, should have similar chemical properties
Choose the warmer temperature.
-29°f or -39°
15. What goes in the box for the following fusion
equation?
2 H + 2 H —> (__) + energy
1. 1
The box for the following fusion equation 2 H + 2 H —> (2H₂) + energy
An critical fusion reaction for practical electricity generation is that between deuterium and tritium (the D-T fusion reaction). It produces helium (He) and a neutron (n) and is written D + T → He + n. To the left of the arrow (earlier than the response) there are protons and 3 neutrons. The same is genuine on the proper.
Fusion guarantees a without a doubt endless shape of power that, in contrast to fossil fuels, emits 0 greenhouse gases and, not like the nuclear fission electricity used today, produces no lengthy-lifestyles radioactive waste.three.
Calculation:-
2 H + 2 H —> (2H₂) + energy
Learn more about fusion equation here :-https://brainly.com/question/23901112
#SPJ1
Question: Children in a tree house lift a small dog in a basket 3.95 m up to their house. If it takes 221 J of work to do this, what is the combined mass of the dog and basket?
Express your answer using three significant figures.
Answer: M = ? kg
The combined mass of the dog and the basket is equal to 5.71 Kg.
What is work?Work can be described as the energy used when applying a force to move an object through a definite displacement.
The work done by a force to move an object through a displacement can be represented as:
W = F.dcosθ
Where θ is angle between displacement and force.
Given, the height the basket lifted up, d = 1.4 m
The angle between force and displacement, θ = 0°
Thus, the work done when lifting the basket is:
W = F d cosθ
W = mg.d cosθ
W = mg.d cos0°
m = W/gd
m = 221/(9.8).(3.95)
m = 5.71 Kg
Therefore, the mass of the basket and dog is equal to 5.71 Kg.
Learn more about work, here:
brainly.com/question/13662169
#SPJ1
How many moles of argon are in 24.2 g of argon?
24.2 g of Argon has 0.6057 moles in it.
We know that the number of moles in a given mass of an element can be calculated by using the formula
⇒ No. of moles = [tex]\frac{Mass of the element }{Molar mass of the element}[/tex] (i)
Here, the mass of the element Argon = 24.2 grams (ii)
The molar mass of Argon is = 39.948 a.m.u. (iii)
Using the values for the molar mass and mass of the element (ii and iii), we get
⇒ [tex]\frac{24.2}{39.948}[/tex]
⇒ 0.6057 moles present in the given mass of Argon.
Therefore, there are going to be 0.6057 moles in 24.2 g of Argon which is given.
Learn to know more about moles on
https://brainly.com/question/26416088
Give the symbol of the element represented by the following abbreviated electron configuration.
[Ar]4s23d10
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Zinc is the element, that represents the given electronic configuration.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
In the given electron configuration [Ar]4s²3d¹⁰. Argon has 18 electrons. So, we have to add 12 electrons from s and d subshells to 18. The total number of electrons that we get on adding is 30. The element that corresponds to atomic number 30 is zinc that is Zn.
Therefore, Zinc is the element, that represents the given electronic configuration.
To know more about element, here:
https://brainly.com/question/8460633
#SPJ1
how to increase rate of the reaction "nitrogen with hydrogen"
The reactants' concentration needs to be raised.
What factors influence rate of reaction?
The rate of the reaction controls how quickly the chemical reaction moves forward. The reaction's rate is influenced by a number of variables. These elements are:
(i) The concentration of the reactant: As the reactant concentration rises, the reaction rate does as well.
(ii) The reactant's nature. The condition, reactivity, or solution type of the reactants all have an impact on the reaction's pace.
(iii)The pressure of the gases: As the pressure of the gases involved in a reaction rises, so does its rate.
(iv) The surface area of the solids—As exposed surface area increases, so does the rate of reaction.
Therefore, if we to speed up the process, she should raise the reactant concentration since the more reactant molecules there are, the more molecules will actually collide, which will enhance the rate of the reaction.
To learn more about reaction rate, click on link below
https://brainly.com/question/12904152
#SPJ1
Consider a transition of the electron in the hydrogen atom from n=4 to n=7. Determine the wavelength of light that is associated with this transition.
The wavelength that is associated with the transition is 2145 nm.
What is the wavelength?We know that the wavelength can be obtained from the use of the Rydberg equation and we know that the Bohr's mode lets us know that an electron can move from from a higher to a lower energy level.
Let us write;
1/λ = RH(1/[tex]n_{2} ^2[/tex] - 1/[tex]n_{1} ^2[/tex])
λ = wavelength
RH = Rydberg constant
[tex]n_{1}[/tex] = initial level
[tex]n_{2}[/tex] = final level
Then;
1/λ = 1.097 * 10^7 (1/4^2 - 1/7^2)
1/λ = 1.097 * 10^7 ( 0.0625 - 0.020)
λ = 2145 nm
Learn more about wavelength:https://brainly.com/question/13533093
#SPJ1
How many molecules are in 72.0 moles of CO₂?
Taking into account the definition of Avogadro's Number, 4.33656×10²⁵ molecules are in 72 moles of CO₂.
Avogadro's NumberAvogadro's Number is called the number of particles that make up a substance (usually atoms or molecules). This particles can be found in the amount of one mole of said substance.
Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Amount of molecules on 72 moles of CO₂Then you can apply the following rule of three: if 1 mole of CO₂ contains 6.023×10²³ molecules, 72 moles of CO₂ contains how many molecules?
amount of molecules of CO₂= (6.023×10²³ molecules × 72 mole)÷ 1 mole
amount of molecules of CO₂= 4.33656×10²⁵ molecules
Finally, 4.33656×10²⁵ molecules are present in 72 moles of CO₂.
Learn more about Avogadro's Number:
brainly.com/question/11907018
brainly.com/question/1445383
brainly.com/question/1528951
#SPJ1
how many moles of iron (ii) sulphate were reacted during the experiment that produced this equation NaOH(aq) + FeSO(sq) ->Na2SO4(aq) + Fe (OH) 2 (s)
Mole measure the number of elementary entities of a given substance that are present in a given sample. One mole of iron (ii) sulphate were reacted during the experiment.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
The balanced equation is
FeSO[tex]_4[/tex](aq) + 2 NaOH (aq) [tex]\rightarrow[/tex] Fe (OH)[tex]_2[/tex] + Na [tex]_2[/tex] SO [tex]_4[/tex]
Stoichiometry, thet is written in the front of molecule or compound represents the number of moles of that compound. One mole of iron (ii) sulphate were reacted during the experiment.
Therefore, One mole of iron (ii) sulphate were reacted during the experiment.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ1
Determine the number of atoms of O in 7.23 moles of Fe(NO₃)₃.
The number of atoms of Oxygen in 7.23 moles of Fe(NO₃)₃ is 3.92 x 10²⁵.
Determine to total number of individual molecules of Fe(NO₃)₃ in 7.23 moles.
Use Avogadro's number for this: 1 mole = 6.02 x 10²³ molecules.
Thus, 7.23 moles of Fe(NO₃)₃ contains molecules,
7.23 x 6.02 x 10²³ = 4.35 x 10²⁴ molecules of Fe(NO₃)₃.
Determine how many oxygen atoms in one molecule of Fe(NO₃)₃. There are 3 Oxygen atoms in the nitrate NO₃, and 3 nitrate groups in Fe(NO₃)₃. Thus, number of oxygen atoms in Fe(NO₃)₃ is,
3 x 3 = 9 Oxygen atoms in 1 molecule of Fe(NO₃)₃.
Finally, multiply the number of O atoms in 1 molecule of Fe(NO₃)₃ by the total number of Fe(NO₃)₃ molecules.
9 x 4.35 x 10²⁴ = 3.92 x 10²⁵ total Oxygen atoms.
Learn more about number of atoms of oxygen from the link given below.
https://brainly.com/question/28751052
#SPJ1
How many joules are in 6,458 Cal? Express your answer in scientific notation with the correct number of significant figures.
The number of Joules in 6,458 Calories calculated to the correct number of significant figures would be 2.6790 x [tex]10^4[/tex] Joules.
Unit conversionBoth Joules (J) and Calories (Cal) are units of energy. According to the standard unit of conversion:
1 kiloCalorie = 4148 Joules
Since, 1 kiloCalorie = 1000 Calorie
Then:
1000 Calorie = 4148 Joules
Thus;
1 Calorie = 4148/1000
= 4.148 Joules
Now, let's see the number of Joules that is equivalent to 6,458 Calories.
1 Calorie = 4.148 Joules
6,458 Calories = 4.148 x 6,458
= 26787.784 Joules
According to one of the rules guiding significant figures when performing multiplication operations, the number with the lowest significant figure is considered for the significant figures of the final answer.
Thus, the final answer, in this case, would be to four significant figures.
In other words, 6,458 Calories = 2.6790 x [tex]10^4[/tex] Joules.
More on energy conversion can be found here: https://brainly.com/question/8427473
#SPJ1
What three things does the atomic number of an element tell us?
Answer:
the number of protons in the nucleus of an atom. the number of protons define the identity of an element
15. A 100 g sample of each of the following metals is heated from 35°C to 45°C. Which metal absorbs
the greatest amount of heat energy?
Metal
4
magnesium
e. copper
copper
magnesium
mercury
silver
lead
b. lead
c. silver
Specific Heat Capacity
0.385 J/(g-°C)
1.02 J/(g-°C)
0.138 J/g °C)
0.237 J/(g-°C)
0.129 J/(g-°C)
d. mercury
The metal that absorbs the greatest amount of heat energy is lead.
Heat energy is the result of the movement of tiny particles called atoms, molecules liquids and gases. Heat energy can be transferred from one object to another. The transfer or flow due to the difference in temperature between the two objects is called heat.
The equation that relates the specific heat capacity to the heat absorbed by the metal is given by:
q= m[tex]C_{p}[/tex]ΔT where q = heat absorbed by the the metal, m = mass of the metal, [tex]C_{p}[/tex] = heat capacity of the metal and ΔT is the change in temperature
In the above given question, the mass of the metal and change in the temperature is the same for all the metals. Therefore, we can determine the metal that will absorb the lowest amount of energy by using the specific heat capacity.
From the equation the heat absorbed by the metal (q) is directly proportional to the specific heat ([tex]C_{p}[/tex]). Hence we can see that lead has the highest specific heat capacity and therefor Lead absorbs the maximum amount of heat.
To know more about heat energy
https://brainly.com/question/25384702
#SPJ1
Does hydrogen satisfy the octet rule when it bonds with other elements having 2 valence electrons?
Why?
Each Hydrogen atom has 1 valence electron. Since Hydrogen can only fit a max of 2 valence electrons in its orbital, each Hydrogen atom only needs 1 electron. Each atom has 1 valence electron, so they can just share, giving each atom two electrons each.
Question 2
Based on the balanced chemical equation: 2 NH3 + 3 CuO → 3 Cu + N₂ + H₂O which of
the following statements is NOT true:
OH2O is a reactant
O Cu is a product
O CuO is a reactant
1.5 pts
NH3 is a reactant
2 NH3 + 3 CuO → 3 Cu + N₂ + H₂O in the equation the compounds that are on the left side were reactants and the compounds on the right side was products.
what is reactants and products?
Chemical reactions form and dissolve the chemical bonds that hold atoms together to form molecules. During a chemical reaction, the atoms are re organized; they become disengaged and reattached to one another in various ways, resulting in new compounds with diverse characteristics. Every chemical reaction has two parts:
Reactants – The beginning elements of a chemical reaction; what enters into the reaction
Usually written on the left side of a chemical reaction
Products — What is produced as a result of a chemical reaction.
Usually written on the right side of a chemical reaction.
among the given options the false statement was
H20 is a reactant was the false statement.
but the H2O was actually a product.
To learn more about reactants follow the given link: https://brainly.com/question/13103210
#SPJ1
In a murder case, the prosecutor shows a photo to demonstrate the position of the body in relation to the rest of the crime scene. What type of photograph was MOST likely shown?
A.
an overview photograph
B.
an intermediate photograph
C.
a close-up photograph
D.
a personal photograph
A close-up photograph must be taken by the prosecutor to demonstrate the position of the body in relation to the rest of the crime scene.
For criminal investigation analysis, it becomes important to capture photographs from those areas in which acts of violence took place. To record the crime scene in more detail the photograph must be taken from close range and also with perfection. Close range photographs enables the viewer to understand where and how the crime was committed. The photographs of entry and exit of the crime scene is taken so carefully to observe the movement of the criminal before and after of the crime.
Learn more about photographs of murder scene from the link given below.
https://brainly.com/question/13694803
#SPJ1
Answer: C
Explanation:
Question is in picture below!
The order of boiling point from the highest to the lowest from the given compounds above are as follows:
CH3CH2CH2CH2CH2OH - CH3CH2CH2CH2CH2Br - CH3CH2CH2CH2CH3 - CH3CH2CH3.
The correct order is option b, d, c and a.
What is meant by boiling point of substances?The boiling point of substances can simply be defined as that temperature at which liquids boils and then change to vapor or steam.
However, from the above given task, the organic compound, CH3CH2CH2CH2CH2OH has the same boiling simply because of its power to participate in hydrogen bond formation. This compound CH3CH2CH2CH2CH2OH is known as 1-pentanol.
So therefore, we can confirm that the compound from above the correct order of boiling point from the highest to the lowest is 1-pentanol, 1-bromopentane, pentane and propane respectively.
Read more on boiling point:
https://brainly.com/question/40140
#SPJ1
At 5:00 A.M. the temperature was
7 degrees below zero. At 8:00 A.M. the temperature is 7 degrees above zero. Is the weather getting warmer or colder?
A) warmer
B) colder
Answer:
A) Warmer
Explanation:
it says above 0
if a reaction that should theoretically yield 20 g of a product has a 45% yield, what is the actual yield of product
If if a reaction that should theoretically yield 20 g of a product has a 45% yield, The actual yield of product is 9g.
How to find the actual yield?Using this formula to find the actual yield of product
Actual yield of product = Actual yield × Theoretically yield
Where:
Actual yield = 45% or 0.45
Theoretically yield = 20g
Let plug in the formula
Actual yield = 0.45 × 20g
Actual yield= 9g
Therefore the actual yield is 9g.
Learn more about actual yield of product here: https://brainly.com/question/23935562
#SPJ1
Taking into account definition of percent yield, the actual yield of the product is 9 g.
Percent yieldThe percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.
The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:
percent yield= (actual yield÷ theoretical yield)× 100%
where:
The actual yield is the amount of product that is actually formed when the reaction is carried out.The theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.Actual yield of product in this caseIn this case, you know:
Percent yield: 45%Actual yield: ?Theoretical yield: 20 gReplacing in the definition of percent yield:
45%= (actual yield÷ 20 g)× 100%
45%÷100%= actual yield÷ 20 g
0.45= actual yield÷ 20 g
0.45×20 g= actual yield
9 g= actual yield
Finally, the actual yield is 9 g.
Learn more about percent yield:
brainly.com/question/27885168
brainly.com/question/23764188
brainly.com/question/28136865
brainly.com/question/5154678
#SPJ1
Which compound has the highest molar mass?
polyethylene, a polymer of ethene
octanal, an eight-carbon aldehyde
ethane, a two-carbon hydrocarbon
octane, an eight-carbon hydrocarbon
Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate. The correct option is option A.
What is mass?Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes. It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.
Out of given compound, a polymer of ethene that is polyethylene will have highest molar mass. Polymer is a long chain of same or different monomer unit. Polymer has higher mass than the individual compound.
Therefore, option A is correct.
To learn more about mass, here:
https://brainly.com/question/28704035
#SPJ1
Answer: polyethylene, a polymer of ethene
is A2+C3H6->C3H6A2 an addition reaction?
Yes. The reaction is an addition reaction.
What are addition reactions?Addition reactions are reactions where 2 or more reactants combine to form a single product. Addition reactions are otherwise known as synthesis reactions because they often result in the synthesis of new molecules entirely.
Generally, addition reactions can be represented by the following equation:
A + B ---> AB
They are quite different from decomposition reactions in which a single product decomposes to form 2 or more products or substitution reactions in which an atom displaces another atom in a compound.
Thus, the reaction [tex]A_2 + C_3H_6 --- > C_3H_6A_2[/tex] is an addition reaction.
More on addition reactions can be found here: https://brainly.com/question/13669873
#SPJ1
A 1.20 L weather balloon on the ground has a temperature of 25.0°C and is at atmospheric pressure (1.00 atm). When it rises to an elevation where the pressure is 0.730 atm, then the new volume is 1.80 L. What is the temperature (in °C) of the air at this elevation?
The final temperature (°C) of the air at this elevation is 326.3K.
How to calculate temperature?The temperature of a gas can be calculated using the combined gas law equation as follows:
P₁V₁/T₁ = P₂V₂/T₂
Where;
P₁ = initial pressureV₁ = initial volumeT₁ = initial temperature P₂ = final pressureV₂ = final volumeT₂ = final temperatureAccording to this question, 1.20L weather balloon on the ground has a temperature of 25.0°C and is at atmospheric pressure (1.00 atm). When it rises to an elevation where the pressure is 0.730 atm, then the new volume is 1.80L. The final temperature can be calculated thus:
1 × 1.2/298 = 0.730 × 1.8/T₂
0.004027T = 1.314
T = 326.3K
Therefore, 326.3K is the final temperature of the balloon.
Learn more about combined gas law at: https://brainly.com/question/2441080
#SPJ1
What is the physical state of fluorine at 25 degrees?
Answer:
State : Gaseous state Colour : Pale yellow Odour : Irritating
Explanation:
At 25 degree celsius which is approximately known as the room temperature, Fluorine being the highest electronegative element has weak van der waal forces due to which the electrons are apart from each other. At a high enough temperature(room temp. in this case) that is higher than their boiling point, the fluorine atoms become gaseous particles. Hope you understood my explanation....Happy Learning:)
Magnetite, Fe3O4, is another ore of iron that contains both Fe²+ and Fe³+.
(a) Deduce the ratio of Fe²+: Fe³+ in Fe3O4.
The ratio of Fe²+: Fe³+ in Fe3O4 is 1:2
What is ore?
An ore is a naturally occurring deposit of geologic material (rock) that contains a sufficient quantity of one or more valuable elements or compounds to be economically mined. Metals such as copper, platinum, iron, lead, gold, silver, aluminium, nickel, and others are among these valuable elements. Nonmetals such as silicon and diamond may be found in ore. These valuable chemicals can be extracted and used in a variety of ways, from jewellery creation to electronic gadget manufacture. Ores vary greatly based on the parent rock's chemical composition as well as the natural mechanism by which they were created.
Mining corporations carefully analyse various issues before deciding to mine because extracting anything from the earth involves time, money, and effort. The ore grade, for example, indicates how much of the desired precious element or combination occurs inside the parent rock. The rock is regarded an ore if the required component is present in sufficient concentration for processing to be viable. Larger grade ores have higher concentrations of the desired ingredient, and vice versa.
Fe304 contains both Fe²+ and Fe³+
Then we have to deduce the ratio of Fe²+ and Fe³+.
We know that
Fe0 + Fe2O3 ---------> Fe3O4
Fe in Fe0 is Fe(II)
Fe in Fe2O3 is Fe(III)
Then we have see that
on combine Fe 2+ with Fe3 , Fe304 is form
Hence,
The ratio of Fe²+: Fe³+ in Fe3O4 is 1:2
Learn more about ore from given link
https://brainly.com/question/89259
#SPJ1
How do I balance these equations? Please explain so I can learn how.
One mole of CS₂ and two moles of H₂S are formed as products and 3 moles of CH₄ are leftover.
What is the limiting reagent?A limiting reagent is a reactant that is fully exhausted from the reaction mixture at the completion of a reaction. The limiting reactant will decide the maximum amount of product.
Given, a balanced chemical equation of the reaction between methane and sulphur is:
[tex]CH_4 + 4S\longrightarrow CS_2 +2H_2S[/tex]
Given, the number of moles of the sulphur = 4
The number of moles of methane = 4
From the chemical reaction, one mole of methane reacts with four moles of sulphur. Therefore, four moles of sulphur fully react with one mole of methane and three moles of methane leftover.
Learn more about limiting reagents, here:
brainly.com/question/26905271
#SPJ1
the nuclear equation of the neutron bombardment of cobalt-60
The nuclear equation for this reaction shows the gamma rays that are released when cobalt-60 is produced. 5927Co+10n⟶6027Co+γ
What is nuclear reaction ?
In nuclear physics and chemistry, a nuclear reaction is the process by which two atomic nuclei or nuclei and external particles collide to produce one or more new nuclides. Therefore, a nuclear reaction must transform at least one nuclide into another nuclide. When a nucleus interacts with another nucleus or particle and they separate without changing the properties of the nuclide, this process is simply called a form of nuclear scattering and is not a nuclear reaction.
Although in principle two or more particles could react and collide, the probability of three or more nuclei colliding in the same place at the same time is much lower than for two nuclei, so such Incidents are very rare.
To learn more about the nuclear reaction , click the given link ;
https://brainly.com/question/25387647
#SPJ1
Calculate the density of an object that has the mass of 16 grams and takes up 7 cm3 of space.
Explanation:
[tex]density \: = \: mass \: over \: volume \\density \: 16grams \: over \: 7cm {}^{3} \\ density = 2.3g \cm {}^{3} [/tex]
3. Which electromagnetic wave types have frequencies higher than microwaves but lower than
UV radiation?
X-rays and gamma rays have frequencies higher than microwaves but lower than UV radiation.
X-rays and gamma rays are both types of electromagnetic radiation. They are similar in that they are both invisible, travel at the speed of light, and can penetrate human tissue. They differ in their wavelength and energy. X-rays have a shorter wavelength and higher energy than gamma rays
Gamma rays are a type of electromagnetic radiation. They are the most energetic form of electromagnetic radiation. Gamma rays are produced by the most energetic events in the universe, such as supernova explosions and the merging of neutron stars.
X-rays are used in medicine and dentistry because they can penetrate the human body, which Gamma rays cannot.
To know more about electromagnetic radiation, click below:
https://brainly.com/question/1408043
#SPJ9
Choose the list that shows the temperatures in order from warmest to coldest.
A) 11°F, 12°F, -11°F, -12°F
B) 12°F, 11°F, -12°F, -11°F
C) 12°F, 11°F, -11°F, -12°F
D) 12°F, -12°F, 11°F, -11°F
Answer: The answer would be C i think
Explanation:
I need help with this questuon
Following are reactant and product states and the balanced chemical equation for the specified chemical reaction: NaOH(aq)+HCl(aq) → NaCl(aq)+H2O(l)
How do you balance a chemical equation?
Step 1: In both reactants and products, count each kind of atom.
Check whether there is exactly the same amounts of each atom on either side of the arrow. Otherwise, the equation is unbalanced, and you must move on to step 2.
Step 2: To increase the amount of atoms or molecules in the substances, place coefficients in front of the symbols or formulas as necessary. Make use of the fewest coefficients you can. Chemical formulations should never have their subscripts changed. The substances involved in the reaction can be altered by changing subscripts. Only modify the coefficients.
Till the equation is balanced, go back and repeat steps 1 and 2.
Following are reactant and product states and the balanced chemical equation for the specified chemical reaction:
In the reaction between sodium hydroxide and hydrogen chloride, sodium chloride and water are produced.
Hence,
NaOH(aq)+HCl(aq) → NaCl(aq)+H2O(l)
To know more about balanced chemical equations from the given link
https://brainly.com/question/11550889
#SPJ1