How many grams are in a 3.1E21 atom sample of vanadium
Why do electrons falling into different orbits give off characteristics wavelengths?
Explanation:
Because the difference in energy between orbits is different in different types of atoms, moving electrons between different orbits requires photons carrying different amounts of energy (different wavelengths).
3. What is the electron configuration of the following elements?
Lithium
Calcium
Copper
Strontium
Potassium
sodium
Answer: Lithium ( 3),Calcium (20),Copper (29),Strontium (38),Potassium (19),Sodium (11)
Explanation:
Which particle has a higher rate of deposition
Answer:it’s c
Explanation:
Edge 2021
Which air is driest? Air Temp 30F Dew-point 29F, Air Temp 77F Dew-point 19F, Air Temp 66F Dew-point 60F, or Air Temp 50F Dew-point 36F
Answer:
Air Temp 77F Dew-point 19F
Explanation:
Quiz
The dew point can be described as the temperature required by the air to be cooled. The driest air will have a higher dew point, therefore, at an air temperature of 66°F and a dew point of 60°F. Therefore, option (C) is correct.
What is dew point?The dew point can be defined as the temperature at which air should be cooled to become saturated with water vapor assuming constant air pressure and water content.
Moisture capacity will decrease below the dew point. Airborne water vapor will condense to form liquid water or dew. Dew develops on the surface and occurs through contact with a cooler surface.
The dew point is called the frost point when the temperature is below the freezing point because frost is produced by deposition rather than a condensation of water.
The humidity also impacts the dew point. The dew point increases when there is higher moisture in the atmosphere. Therefore, the higher dew point refers to less humid air or drier.
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Which of the following happens to the particles when the temperature of liquid water drops?
kinetic energy decreases
kinetic energy increases and then decreases
kinetic energy increases
kinetic energy stays constant
Answer:
The Kinetic energy decreases
Explanation:
because the speed of the molecules slows down.
Jeremiah pushed Anthony with a net force of 12 N. Anthony accelerated across the hall at 0.2 m/s2. What was Anthony’s mass?
Answer:
6
Explanation:
Work Shown:
Force = Mass*Acceleration
F = ma
12 = m*0.2
12/0.2 = m
60 = m
m = 60 kilograms
Explain the relationship between protons and ionization energy
Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?
2. What substance is held together by ionic bonds?
3. What metal and nonmetal transferrers electrons?
4. What particle has electrons that are shared unequally?
5. What forms when atoms share electrons by covalent bonds?
6. What two nonmetals share electrons?
7. What charge atom that has lost one or more electrons?
8. What two or metals "pooling" electrons?
a. metallic bond
b. covalent bond
c. anion
d. ionic bond
e. molecule
f. cation
g. compound
h. polar molecule
Answer:
1. anion
2. compund
3. ionic bond
4. polar molecule
5. molecule
6. covalent bond
7. cation
8. metallic bond
Explanation:
You can see protons yes or no
No. Not with the naked eye
what are green boxes on periodic tables
Answer:
The basic metal ones?
Explanation:
...
Which statement best describes two functions of blood?
Answer:
flows through your viens and moves to your blood vesils
Explanation:
its how blood operates
Select the correct answer
Giving brainliest
Answer:
I'm gonna say A and B
Explanation:
Not sure though
Hope I helped :)
Plants prevent a) soil erosion by wind or water b) soil erosion due to a forest station c) The loosening of soil and they bind the soil with the help of the roots
Answer:
The loosening of soil and they bind the soil with the help of the roots
Explanation:
Here, we want to know how plants prevent erosion by wind or water.
The way they do this is by binding the soil with their roots such that it will not be easy for the erosion agent to erode the surface.
How they do this is by making sure that the soil
particles are binded together with their roots which helps to keep the particles of the soil intact and not eroded
Answer:
c
Explanation:
The three types of symbiosis are ___ and ___
Answer:
mutualism,commensalism and parasitism
Answer:
mutualism, commensalism, and parasitism
What mass of oxygen reacts with 12g of magnesium?
Answer:
24g
Explanation:
2×12=24
1mole of Mg react with 2 mooe of O2
I WILL GIVE BRAINLIEST TO YOU IF YOU ANSWER THIS (I KNOW THE ANSWER, SO IF YOU SOLVED WRONG, I WONT GIVE BRAINLIEST) SO YOU BETTER GIVE CORRECT ANSWER OR IM NOT GOING TO GIVE BRAINLIEST
Answer:
Corona Virus outbreak
Please answer fast!!!!!!!The table shows the distance that car 2 traveled during three trials. What is the average distance traveled by car 2 without a bumper? Be sure to show your work.
Trial 1 Trial 2 Trial 3
25, 27, 29
Answer: 25 + 27 + 29 = 81
81 divided by 3 = 27
your answer is 27
Explanation: you add them all together then however many numbers there are is how you divide it
Answer:
81 and 27 i think
Explanation:
All of the different organisms interacting in a pond make up
1.) a community
2.)the water cycle
3.) a population
4.) the habitat
Answer:
they would make up a population
Explanation:
all the inhabitants of a particular town, area, or country.
the population of frogs are very difficult to catch
What is the correct name and HELPPP!!
What is the name and formula of an ionic compound containing the element with the
atomic number of 5 bonded to Carbonate? *
Boron Carbonide; B2(CO3)3
Boron Carbonate; B,CO,
Boron Carbide; B,CO,
Boron Carbonate; B2(CO3)3
Answer:
Boron Carbonate; B₂(CO₃)₃
Explanation:
For names, carbonide does not exist; that rules out the first option. Carbide refers to just a carbon atom, not carbon and oxygen as in the polyatomic ion carbonate. That rids us of the third option. We are left with boron carbonate with the formula BCO or boron carbonate with the formula B₂(CO₃)₃.
Recall the carbonate polyatomic ion's formula: CO₃²⁻
Thus BCO cannot be the formula.
Option 4 is your answer, Boron Carbonate; B₂(CO₃)₃.
To further check your answer, observe the oxidation states of boron and the polyatomic ion carbonate. Boron can exist in oxidation states of either 2+ or 3+, and carbonate is only 2-; in this formula, boron will exhibit a 3+ state to balance out with carbonate.
2x3+ = 6+; 3x2- = 6-
6+ + 6- = 0; balanced
help it's chemistry
Answer:
wavelength = wave velocity/frequency.
Explanation:
c
is a constant. It is usually given as
3.00
×
10
8
m/s or
3.00
×
10
10
cm/s rounded to three significant figures.
Wavelength is measured in meters, centimeters, nanometers, etc...).
Frequency has a unit of
1/s
which means
1
cycle per second. It is also given the unit Hertz (Hz) in honor of German physicist Heinrich Hertz who proved the existence of electromagnetic waves.
1
Hz
=
1/s
.
Question 2
1 pts
Which of the following bonding types requires a TRANSFER of valence
electrons between two or more atoms?
Covalent
o lonic
Hydrogen
O Metallic
Answer:
I want to say its Lonic Bonding.
Explanation:
Ionic bonding is the complete transfer of valence electron(s) between atoms.
please someone answer and help :)
A student wants to investigate competition between two organisms. For the investigation, it
is most important that the student should choose organisms that
O require the same resources.
O reproduce at the same rate.
O are both active during the day.
o have the same adaptations.
(help please!!! due today!!!)
Answer:
i think that the answer is B
Explanation:
If a student wants to investigate competition between two organisms in an ecosystem the organisms should have same adaptations and use same resources.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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The half-life of carbon-14 is about ____________ years.
Fill in the blank.
Answer:
5730 years
Explanation: for more on radiocarbon dating.) and hence explain why the amount of carbon-14 in the sample decays by half over any period of 5730 years.
Please help... awarding 20 points and brainiest if correct.
Answer:
CH4
- 4 electron
- 0 electron
- the geometry of Ch4 is tetrahedral
AlF3
- 3 electron
- 0 electron
- the geometry is trigonal planar
CCl4
- 4 electron
- 0 electron
- the geomotry is tetrahedral
SeH2
- 2 electron
- 2 electron
- the geometry is V shape
1375 J of heat energy are added to a 50.0 g sample of copper, which increases temperature from 22.8 C to 94.2 C. Calculate the specific heat of copper.
Answer:
0.385 J/g°C
Explanation:
Using the following formula, the specific heat of an elemental substance can be calculated:
Q = m × c × ∆T
Where;
Q = quantity of heat (J)
m = mass (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
Based on the given information, Q = 1375J, m = 50g, initial temperature = 22.8°C, final temperature = 94.2°C, c =?
Q = m × c × ∆T
1375 = 50 × c × (94.2 - 22.8°C)
1375 = 50 × c × 71.4
1375 = 3570c
c = 1375/3570
c = 0.3851
c = 0.385 J/g°C
1. Which best represents a compound?
Answer:
D
Explanation:
The one that best represents a compound is answer "D" because you compounds are chemically bonded and are always together.
What is better Music,Cartoons,Games,Anime,Knowledge Or Relaxation.
Answer:
anime
Explanation:
A voltmeter is a device that measures electricity. It can detect the amount of electricity between two electrodes when they are submerged in a solution, such as salt water. Describe how you would find the melting point and the conductivity of the white substances in the beakers. Then, explain how you could identify which substance is salt and which is sugar.
Answer:
Explanation:
To determine the melting point of the unknown white substances. A sample of each of the unknown can be placed in separate capillary tubes and then placed in an adjustable heat source (for example water bath). A thermometer is then placed in the heat source very close to the tube holding the sample. The temperature of the heat source will be adjusted until the solid substance in the capillary tube starts to melt, the temperature at this point is noted as the melting point.
To determine the conductivity of the white substances, an electrolysis experiment is done. A sample each of the unknown substances is dissolved in water. These aqueous solutions are prepared separately. Two electrodes (positively charged anode and negatively charged cathode) are dipped into each of these solutions and an electric current is passed through these solutions, from an energy source (such as batter), through the electrodes (with the electric current flowing from the anode to the cathode). A voltmeter is then connected to this set-up to determine if electricity is been passed through the individual solutions.
The substance that is the salt will be the white substance that has the higher melting point and conducted electricity in the electrolysis set up; this is because NaCl salt is an ionic compound which has a high melting point and conducts electricity when dissolved in water. While the white substance that had a lower melting point and did not conduct electricity will be the sugar; this is because sugar/sucrose is an organic substance that has a low melting point and does not conduct electricity when dissolved in water.