All categories

3 years ago

Condensation occurs when matter changes from a

Chemistry

2 answers:

Vikki [24]3 years ago

7 0

Answer:

A GAS TO A LIQUID

Explanation:

Furkat [3]3 years ago

3 0

Condensation is a process in which a substance changes from a gas to a liquid.
Ans : a

You might be interested in

Do bacteria help people?? This is science but there is no tab

Charra [1.4K]

Answer:

Yes

Explanation:

Some bacteria is good for you like the bacteria in your digestive system, which helps with breaking down food and keeping you healthy

4 0

3 years ago

What I need help fast!

ozzi

The correct answer would be 3

3 0

3 years ago

The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT . H

Vlad1618 [11]

Answer: 0.028 grams

Explanation:

Depression in freezing point :

Formula used for lowering in freezing point is,

$\Delta T_f=k_f\times m$

or,

$\Delta T_f=k_f\times \frac{\text{ Mass of solute in g}\times 1000}{\text {Molar mass of solute}\times \text{ Mass of solvent in g}}$

where,

$\Delta T_f$ = change in freezing point

$k_f$ = freezing point constant (for benzene} = $5.12^0Ckg/mol$

m = molality

Putting in the values we get:

$0.400^0C=5.12\times \frac{\text{ Mass of solute in g}\times 1000}{354.5\times 209.0}$

${\text{ Mass of solute in g}}=0.028g$

0.028 grams of DDT (solute) must be dissolved in 209.0 grams of benzene to reduce the freezing point by 0.400°C.

4 0

3 years ago

Determine the volume in liters occupied by 22.6 g of I2 gas at STP.

AleksandrR [38]

The volume in liters occupied by 22.6 g of I₂ gas at STP is 1.99 L (answer A)

calculation

Step: find the moles of I₂

moles= mass÷ molar mass

from periodic table the molar mass of I₂ is 253.8 g/mol

moles = 22.6 g÷253.8 g/mol =0.089 moles

Step 2:find the volume of I₂ at STP

At STP 1 moles =22.4 L

0.089 moles= ? L

by cross multiplication

={ (0.089 moles x 22.4 L) /1 mole} = 1.99 L

6 0

3 years ago

Which of these expressions are correct variations of the Combined Gas Law?

mafiozo [28]

Answer:

Both

Explanation:

The combined gas law is also known as the general gas law.

From the ideal gas law we assume that n = 1;

So;

PV = nRT

and then;

$\frac{P_{1}V_{1} }{T_{1} }$ = $\frac{P_{2}V_{2} }{T_{2} }$

If we cross multiply;

P₁V₁T₂ = P₂V₂T₁

So;

T₁ = $T_{2} \frac{P_{1}V_{1} }{P_{2} V_{2} }$

Also;

V₂ = $V_{1} \frac{P_{1} T_{2} }{P_{2} T_{1} }$

So from the choices both are correct

3 0

3 years ago