Why did the outside of the bag get wet? From ice melting in the bag

Chemistry

1 answer:

dezoksy [38]2 years ago

7 0

Because the water seeped through the bag (? I don’t know the context correct me if I’m wrong)

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The gaseous product of a reaction is collected in a 25.0L container at 27.0 C. The pressure in the container is 3.0atm and the g

NeX [460]

Answer: The molar mass of the gas is 31.6 g/mol

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 3.0 atm

V = Volume of gas = 25.0 L

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $27.0^0C=(27.0+273)K=300K$

$n=\frac{PV}{RT}$

$n=\frac{3.0atm\times 25.0L}{0.0821 L atm/K mol\times 300K}=3.04moles$

Moles = $\frac{\text {given mass}}{\text {Molar mass}}$

$3.04=\frac{96.0g}{\text {Molar mass}}$

${\text {Molar mass}}=31.6g/mol$

The molar mass of the gas is 31.6 g/mol

4 0

3 years ago

Which of the following statements describes a difference between a chemical change and a physical change in a substance

siniylev [52]

Explanation:

A physical change is one that alters the physical properties of matter (particularly the form and state).

A chemical change is one in which new kind of matter is formed. It is always accompanied by energy changes (evolution or absorption of energy in form of heat or light or both).

Now, the salient differences between physical and chemical changes;

Physical changes are easily reversible whereas chemical changes are not easily reversible.
Physical changes lead to the production of no new kinds of matter whereas chemical changes leads to the production of new kinds of matter.
Physical changes involves no change in mass whereas chemical changes involves change in mass.
Physical changes require little energy whereas considerable amount of energy is needed for chemical changes.