Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

$P\propto \frac{1}{V}$

or,

$P_1V_1=P_2V_2$

where,

$P_1$ = initial pressure = 3.7 atm

$P_2$ = final pressure = ?

$V_1$ = initial volume = 5.8 L

$V_2$ = final volume = 2.5 L

Now put all the given values in the above equation, we get:

$3.7atm\times 5.8L=P_2\times 2.5L$

$P_2=8.6atm$

Thus, the new pressure acting on a 2.5 L balloon is, 8.6 atm.

8 0

2 years ago

1. How many atoms of nitrogen are there in 0.50 mol of (NH4)2CO3?

mr Goodwill [35]

Answer:

Explanation:

no. of moles = no. of atoms/ Avogadro's number

0.5= N/6.02×10^23

N= 3.01×10^23

5 0

2 years ago

A graduated cylinder is filled to 10.0 mL with water and a piece of granite is placed in the cylinder displacing the level to 23

Rus_ich [418]

Answer:

13.7 cubic centimeters

Explanation:

23.7-10=13.7mL

8 0

2 years ago

The reaction of 0.779 g K with O2 forms 1.417 g potassium superoxide, a substance used in self-contained breathing devices. Dete

zhannawk [14.2K]

First we need to find the number of moles of both K and O reacted
K - 0.779 g / 39 g/mol
= 0.02 mol
the mass of O₂ reacted = 1.417 g - 0.779 g = 0.638 g
O₂ moles = 0.638 g / 32 g/mol
= 0.02 mol
the number of both K and O₂ moles reacted are equal
therefore stoichiometry of K to O₂ reacted are 1:1
then the formula of potassium superoxide is KO₂

3 0

2 years ago