Explanation:
Hope it helps you!!Answer:
open system
Explanation:
Coffee held in a cup is an open system because it can exchange matter water vapors and energy heat with the surroundings.
Can someone help?? this is on weather.
Answer:
a or b
it is either a or be because it will get warmer but might be a little cloudy
2 Na + 1 Cl2 → 2 Naci
How many grams of NaCl are created from 23,2 grams Cl2?
37 grams of NaCl (when I mean equivalent I mean the ratio of the equation is 1:2 for moles or Cl2 and NaCl
What molecule is removed during dehydration synthesis?.
Answer: two hydrogen atoms and one oxygen atom are removed during dehydration synthesis.
Hope this helps!
Energy removal is illustrated in. A. Changing water ice to waterB. Changing water to steamC. Boiling of gasolineD. Evaporation of sea water
Answer:
D. Evaporation of sea water
Explanation:
I need help ASAP, please.. Name two sodium salts that may be prepared by reacting sodium hydroxide with dilute sulphuric acid.
The two sodium salts that may be prepared by reacting sodium hydroxide and sulfuric acid are sodium sulfate and sodium bisulfate produced by neutralization .
What is a salt?
Salt is defined as a chemical compound which is ionic in nature and consists of cation and an anion.It has no net electrical charge as the charges are completely neutralized in case of salts.
They are classified as acidic, basic or neutral salts depending on the ions they produce on dissolution.They have wide variety of colors depending on the elements from which they are formed and have five basic tastes.Salts are usually odorless except a few exceptions . They are highly soluble in water and are insulators in the solid state, to make them conductive they need to be melted or dissolved.
Learn more about salts,here:
https://brainly.com/question/14618515
#SPJ2
The solubility of a solute is the largest amount of solute that can dissolve in a certain quantity of __________. Which word best completes this statement?.
Answer:
Solvent
Explanation:
The solute is the substance that is dissolved.
The solvent is the substance that the solute is dissolved in.
The whole mixture is called the solution
Answer:
Solvent
Explanation:
I Took The Test
Convert 30.0g Cu2SO4 to moles
please help
Answer:
0.1 moles
Explanation:
1 grams Cu2SO4 to mol = 0.00448 mol
30 grams Cu2SO4 to mol = 0.13443594709676698 mol
if we round that up - 0.1
What do many bases have in common?
Answer:
All bases conduct electricity as they are good electrolytes. All bases turn red litmus paper into blue at the time of indication. Bases have a bitter taste with a soapy texture
Explanation:
hope this helps
Answer:
Explanation:
All bases conduct electricity as they are good electrolytes. All bases turn red litmus paper into blue at the time of indication. Bases have a bitter taste with a soapy texture.
Which is a general representation of a secondary amine? An N is bonded to two electron dots above; with a dotted triangular line to an H, a solid triangular line to an H, and single line to an H; it is noted that the angle between the last 2 H atoms is 107 degrees. An N with 2 electron dots is linked to an R 1 group with a single line, an H with a triangular line, and and H with a dotted line. An N with 2 electron dots is linked to an R 1 group with a single line, an R 2 group with a triangular line, and and H with a dotted line. An N with 2 electron dots is linked to an R 1 group with a single line, an R 2 group with a triangular line, and an R 3 with a dotted line.
Answer:
B is wrong the answer is C on edge
Explanation:
Which example is an endothermic reaction?
O combustion of methane
condensation of steam
the reaction in a cold pack
freezing water
Answer: the answer is the reaction in a cold pack
Explanation: since endothermic means the absorption of heat
Active solar energy is helpful in countries with homes distributed unevenly or in remote
locations.
True
False
Answer:
True
Explanation:
I took the test and got it right.
Answer:
true
Explanation:
got it right on the test!
A Gas tanker is carrying 325,875 L of octane, C8H18, at 1.27?atm. What is the volume of the propane at standard pressure. I need this worked out and I need to know what gas law is needed to solve this problem.
The volume of the propane gas at standard pressure is 413861.25L.
The gas law needed to solve the volume of propane gas at standard pressure is Boyle's law.
Boyle's lawBoyle's law states that the volume of a given mass of gas is inversely proportional to its pressure, provided that the temperature remains contant.
Boyle's law can be expressed mathematically as
P₁V₁ = P₂V₂............... Equation 1Where:
P₁ = Initial pressure of octane gasV₁ = Initial volume of octane gasP₂ = Final pressure of octane gasV₂ = Final volume of octane gas.Since we were asked to find the final volume in the question above, we make V₂ The subject of the equation.
V₂ = P₁V₁/P₂................... Equation 2From the question,
Given:
P₁ = 1.27 atmV₁ = 325875 LP₂ = 1 atm (Standard pressure)Substitute the given values into equation 2
V₂ = (1.27×325875)/1V₂ = 413861.25 L.Hence, the volume of the propane gas at standard pressure is 413861.25L.
Learn more about Boyle's law here: https://brainly.com/question/26040104
7. Which is not a sedimentary rock?
A basalt
B
calcite
С
gypsum
D
halite
Answer: C
Explanation: calcite is one of them and the other is one too
Several phytochemicals, such as lycopene and resveratrol, may help the body ward off cancer. What is the best way to incorporate phytochemicals into your dietary pattern?.
Answer:
Consume a variety of brightly colored fruits and vegetables.
Explanation:
What vocabulary term refers to the offspring when it possesses the same trait for both genes?
Given what we know, we can confirm that the term used to describe an offspring that possesses the same trait for both genes is homzygous.
What does it mean to be homzygous?This is as indicated in the question, it refers to organisms that have inherited the same allele for a gene from both parents. Meaning that both variations of said gene in this individual are the same and therefore, there is no possibility of a distinct expression.
Therefore, we can confirm that the term used to describe an offspring when it possesses the same trait for both genes is homzygous.
To learn more about genetics visit:
https://brainly.com/question/12985618?referrer=searchResults
Answer:
Dominant
Explanation:
Dominant, as related to genetics, refers to the relationship between two inherited versions of a gene related to that trait.
H2S has what kind of intermolecular force?
a. dipole dipole
b. ionic
c. london dispersion
d. hydrogen bond
explain why
Answer:
A
Explanation:
The intermolecular force which polar molecules take part in are dipole-dipole forces.
What is the pOH of a solution of HNO3 that has [OH– ] = 9. 50 × 10–9 M?.
8.022 is the value of pOH of the HNO₃ solution.
How pOH can be calculated?pOH of the HNO₃ solution can be calculated as:
pOH = -log [OH⁻], where
[OH⁻] = concentration of hydroxyl ion = 9. 50 × 10⁻⁹ M
Putting this value in the above equation, we get
pOH = -log ( 9. 50 × 10⁻⁹)
pOH = - (- 8.022) = 8.022
Hence, pOH of the HNO₃ solution is 8.022.
To learn more about pOH, visit the below link:
https://brainly.com/question/3504481
In a group assignment, students are required to fill 10 beakers with 0.720 m cacl2. if the molar mass of cacl2 is 110.98 g/mol and each beaker must have 250. ml of solution, what mass of cacl2 would be used? use molarity equals startfraction moles of solute over liters of solution endfraction.. 3.13 g 38.5 g 200 g 617 g
200 grams is the required mass of calcium chloride.
What is molarity?
Molarity (M) is define as the no. of moles (n) of solute present in per liter of solution (V) i.e. M = n/V.
Given molarity of CaCl₂ = 0.720 M
Total volume of solution = 10×250 = 2500 mL = 2.5 L
Moles of CaCl₂ = 0.720×2.5 = 1.8 moles
Now we calculate the moles by using the below formula:
n = W/M, where
W = required mass = to find?
M = molar mass of CaCl₂ = 110.98 g/mol
Mass of CaCl₂ = 1.8 × 110.98 = 199.8 = 200g
Hence, option (3) is correct i.e. 200g. is the required mass of CaCl₂.
To know more about molarity, visit the below link:
https://brainly.com/question/26927002
Answer:
c
Explanation:
why does nonmetallic elements pull elements from metallic elements so effectively during a reaction?
Answer:
Non metal are located on the right side of the periodic table. The non metals are more electronegative than metals, thus the non metals are trying to achieve to get Noble gas configuration by pulling the electrons from the metal..Explanation:
:))What distance do I cover if I travel at 10 m/s E for 10 s
What is the formula for a compound containing one atom of sodium, one atom of oxygen, and one atom of hydrogen?
Answer:
NaOH
Explanation:
Looking at a periodic table, sodium is Na, oxygen is O and hydrogen is H
If we have a compound containing 1 atom of sodium (Na), 1 atom of oxygen(O) and 1 atom of hydrogen(H) the formula would be NaOH
If a teaspoon of sugar dissolved
completely in a glass of water, what type
of mixture is this?
A. heterogeneous
B. homogeneous
C. element
Answer:
b
Explanation:
it's a homogeneous ,because the sugar has completely dissolved into the water and stays completely clear throughout the glass of water.
PLEASE HELP!!!!!
Deep-sea divers use a breathing mixture of helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen if the total pressure of the mixture is 760 mm Hg, the pressure exerted by the helium is 609 mm Hg, and the pressure exerted by the carbon dioxide is 1 mm Hg?
A
760 mm Hg
B
500 mm Hg
C
150 mm Hg
D
609 mm Hg
A gaseous mixture (760 mmHg) containing helium (609 mmHg), carbon dioxide (1 mmHg) and oxygen (C. 150 mmHg).
What does Dalton's law of partial pressures state?Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases.
A gaseous mixture with a total pressure of 760 mmHg contains Helium (609 mmHg), carbon dioxide (1 mmHg) and oxygen. We can calculate the partial pressure of oxygen using Dalton's law.
P = pHe + pCO₂ + pO₂
pO₂ = P - pHe - pCO₂
pO₂ = 760 mmHg - 609 mmHg - 1 mmHg = 150 mmHg
where,
P is the total pressure.pHe is the partial pressure of helium.pCO₂ is the partial pressure of carbon dioxide.pO₂ is the partial pressure of oxygen.A gaseous mixture (760 mmHg) containing helium (609 mmHg), carbon dioxide (1 mmHg) and oxygen (C. 150 mmHg).
Learn more about Dalton's law here: https://brainly.com/question/14119417
PLS HELP STOICHIOMETRY/CHEM!!!
Determine the empirical formula of a compound containing 48.38 grams of carbon, 6.74 grams of hydrogen, and 53.5 grams of oxygen.
In an experiment, the molar mass of the compound was determined to be 180.15 g/mol. What is the molecular formula of the compound?
For both questions, show your work or explain how you determined the formulas by giving specific values used in calculations. (10 points)
The molecular formula of the compound that we are required to find is the compound C4H8O8
What is empirical formula?The empirical formula of a compound is a formula that shows the ratio of each atom present in the compound. We will start by dividing each mass with the relative atomic mass of the atom.
Carbon - 48.38 g/12 Hydrogen - 6.74 g/1 Oxygen - 53.5 g/16
Carbon - 4 Hydrogen - 6.74 Oxygen - 8.9
Dividing through by the lowest ratio;
Carbon - 4/4 Hydrogen - 6.74/4 Oxygen 8.9/4
Carbon 1 Hydrogen 2 Oxygen 2
The empirical formula is CH2O2.
To obtain the molecular formula; https://brainly.com/question/11588623
[12 + 2 + 32]n = 180
n = 180/[12 + 2 + 32]
n =4
The compound C4H8O8
Learn more about empirical formula:
The empirical formula is [tex]COH_{2}[/tex], and the molecular formula is [tex]C_{6}O_{6}H_{12}[/tex].
Calculate the molarity of a solution made by dissolving 12.5 g Na2CO3 in exactly enough
water to form 550.0 mL of solution.
Answer:
0.215 M
Explanation:
M = m/L
To find to moles of Na2CO3 we have an equation:
m = mass(g)/molar mass(g/mol)
Molar mass of Na2CO3 is 106
=>> 12.5g/106 = 0.118 moles
To convert ml to L, divided ml by 1000
550/1000= 0.55L
Apply this equation to find the molarity: M = m/L
0.118 ÷ 0.55 = 0.215M
If you mix equal volumes and concentrations of aqueous solutions of Cu(NO3)2 and K2S, which ions will remain in solution as spectators in the reaction
The spectator ions that remain in solution are potassium ion and nitrate ion.
What are spectator ions?The spectator ions are the ions that remain in solution after reaction. They are those ions that are unchanged at the end of the reaction. For the reaction of Cu(NO3)2 and K2S, teh products are CuS and KNO3.
As such the spectator ions that remain in solution are potassium ion and nitrate ion.
Learn more about spectator ions: https://brainly.com/question/15365313
A gas at constant volume has a pressure of 4. 50 atm at 200. K. What will be the pressure of the gas at 250. K? 3. 60 atm 4. 60 atm 5. 63 atm 5. 89 atm.
5.625 atm will be the pressure of the gas at 250 K temperature of the gas at constant volume.
How we calculate the pressure of the gas?Pressure of the gas will be calculated by using the ideal gas equation as:
PV = nRT,
From the question, it is clear that:
Moles of the gas and volume is constant here, so we calculate the pressure by rearranging the above equation as:
P/T = nR/V
And required equation will be:
P₁/T₁ = P₂/T₂, where
P₁ = pressure of gas = 4.50 atm
T₁ = temperature of gas = 200 K
P₂ = pressure of gas = to find?
T₂ = temperature of gas = 250 K
On putting all these values in the above equation, we get
P₂ = 4.50 × 250 / 200 = 5.625 atm
Hence, 5.625 atm is the pressure of the gas.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/1056445
Chromate ions react according to the following equation, where the left side of the reaction is yellow and the right side is orange.
CrO42– + 2H+ ⇄ Cr2O72– + H2O
A student adds sodium hydroxide (NaOH) to the solution at equilibrium. In one to two sentences, describe and explain any changes to the solution that the student will observe.
please helpp
NaOH is a base and addition of NaOH will cause the left reaction to proceed and the solution turns yellow.
What is chemical equilibrium?Chemical equilibrium refers to a dynamic stare in which the forward and reverse reactions are occurring at the same time at the same rate.
Any change in the reaction conditions will cause equilibrium to shift either to the left or right.
In the given equation, addition of acid will result in the forward reaction proceeding and the solution turns orange.
The left reaction is favoured on addition of base.
Since NaOH is a base, addition of NaOH will cause the left reaction to proceed.
The solution turns yellow
Learn more about chemical equilibrium at: https://brainly.com/question/5081082
The change to the solution is that the addition of NaOH will cause the left reaction to proceed and the solution turns yellow.
What is a solution?A solution means a special type of homogeneous mixture that is composed of two or more substances.
It should be noted that a change in the reaction conditions will cause the equilibrium to shift either to the left or right.
In this case, the addition of NaOH will cause the left reaction to proceed and the solution turns yellow.
Learn more about solution on:
https://brainly.com/question/25326161
for every 0.50 moles of CaC2O4 formed, how many moles of NaI are Formed?
Answer:
1.45 moles of Na2O produced
Explanation:
mark as brainiest
Select the correct answer.
Why does every chemical reaction require a certain amount of activation energy?
А.
Energy is released when the reactants begin to react.
В.
Energy lost to the environment during the reaction must be replaced.
C. Forming the activated complex requires energy.
D. The products have more potential energy than the activated complex.
E. The reactants have less potential energy than the products.
Answer:
answer is option A
mark as brilliant