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Marizza181 [45]
3 years ago
14

A sealed container of liquid develops some vapor pressure. Which of the following would reduce the vapor pressure?

Chemistry
2 answers:
MaRussiya [10]3 years ago
5 0

Answer:

a is the right anwser

Explanation:

mr Goodwill [35]3 years ago
4 0

Answer:

Decrease the temperature

Explanation:

If you increase the temperature the vapor pressure will increase. Adding more liquid to the container is completely irrelevant.

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Calculate the molarity of a 150 g NaCl in 250 ml solution.
Marizza181 [45]

Answer: 10.3 mol/l

Explanation: Molality = concentration c = n/V

Amount of substance n = m/M = 150 g / 58.44 g/mol  =

2,5667 mol . c = 2.5667 mol / 0.25 l = 10.2669 mol/l

c =

7 0
3 years ago
A reaction begins with 130.5g of substance X and substance Y. How many grams of
Paha777 [63]

Answer:

130.5g

Explanation:

At the of the reaction, the combined mass of X and Y will be 130.5g.

The premise for this conclusion is based on the law of conservation of matter.

This law states that "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".

In essence, in a chemical reaction, there is no mass loss.

  • The amount of product in the reaction is expected to be the same as the amount of reactants used in the experiment.
  • When we start with 130.5g then we should end with 130.5g
7 0
3 years ago
Balance these equations :
vfiekz [6]

Answer:

  1. H2+O2_____2H20
  2. 2/8 S8_____2S8O3
  3. 2HgO_____2Hg+O2
  4. Zn+2HCl____ZnCl2+H2
  5. 2Na+2H2O___2NaOH+H2
  6. C10H16+4Cl2___5C+8HCl
  7. 4Fe+3O2____2Fe2O3
  8. C6H12O6+2O2___2Co2+2H2O
  9. Fe2O3+3H2____2Fe+3H2O
  10. 2Al+3FeO____Al2O3+3Fe

6 0
3 years ago
Why rusting of iron is harmful
gladu [14]
It is harmful because you can get burned easy and your clothes can get dirty.
3 0
3 years ago
For some hypothetical metal, the equilibrium number of vacancies at 900c is 2.3 1025 m3. if the density and atomic weight of thi
PSYCHO15rus [73]

Hey there!

The number of vacancies per unit volume =>  ( Nv = 2.3*10²⁵ m⁻³ )

Avogrado's number =>  ( NA = 6.022*10²³ atoms/mol )

Density of material ( p )  in g/m³ :

1 g/cm³ = 1000000 g/m³ so:

7.40  * ( 1000000 ) = 7.40*10⁶ g/m³

Atomic mass = 85.5 g/mol

* Calculate the number of atomic sites per unit volume :

N = NA * p / A

N = ( 6.022*10²³ ) * ( 7.40*10⁶ ) / 85.5

N = 4.45*10³⁰ / 85.5

N = 5.212*10²⁸ atoms/m³

Therefore:

Calculate the fraction of vacancies :

Fv =  Nv / N

Fv = 2.3*10²⁵ / 5.212*10²⁸

FV = 4.441*10⁻⁴



Hope that helps!

5 0
3 years ago
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