Question

For the given elements, convert 1.00 gram of that element to moles.

How many moles of calcium are in 1.00 gram?

How many moles of cadmium are in 1.00 gram?

How many moles of carbon are in 1.00 gram?

Please help

Answer 1

1)

Molar mass of Ca = 40.08 g/mol

mass(Ca)= 1.00 g

we have below equation to be used:

number of mol of Ca,

n = mass of Ca/molar mass of Ca

=(1.0 g)/(40.08 g/mol)

= 2.50*10^-2 mol

Answer: 2.50*10^-2 mol

2)

Molar mass of Cd = 112.4 g/mol

mass(Cd)= 1.00 g

we have below equation to be used:

number of mol of Cd,

n = mass of Cd/molar mass of Cd

=(1.0 g)/(112.4 g/mol)

= 8.90*10^-3 mol

Answer: 8.90*10^-3 mol

3)

Molar mass of C = 12.01 g/mol

mass(C)= 1.00 g

we have below equation to be used:

number of mol of C,

n = mass of C/molar mass of C

=(1.0 g)/(12.01 g/mol)

= 8.33*10^-2 mol

Answer: 8.33*10^-2 mol