If there are 42g of H in methane (CH4) how many grams of C are present?

126 grams of C

Explanation:

Molar mass of C = 12

Molar mass of H = 1

In methane (CH4) the ratio of the masses of carbon to hydrogen is given as;

C : H  =  12g : 4g = 3g  : 1g

This means there is 3g of C to 1g of H. If there are 42g of H, how many C..?

3 = 1

x = 42

x = 126 grams of C

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l