Question

the ratio of kinetic energy after grams of H2 and 4 grams of ch4 at a given temperature is

Answer 1

2:1 IS YOUR ANSWER DEAR

Answer 2

Answer:

Explanation:

Hydrogen and methane are the gases and the formula for kinetic energy is given as:

K.E. =$\frac{5}{2} nrt$      ....(1)

where,

R = Gas constant

T = Temperature of the gas

n = Number of moles of gas

To calculate the number of moles, we use the formula:

number of moles = given total mass/ molar mass

For Hydrogen:

Molar mass = 2g/mol

Given mass = 2g

nH = 2/2 = 1

for methane :

Molar mass = 16 g/mol

Given mass = 4g

nch4 = 4/16 = 1/4

Taking the ratio of kinetic energy of hydrogen and oxygen by putting it in equation 1, we get:

$\frac{K.E. (h2)}{K.E. (ch4)} = 1 * \frac{4}{1}$  = 4:1

Thus, the correct answer is = 4:1