Q. 7.23 - An Introduction to General, Organic, and Biological Chemistry

Question

Calculate the mass, in grams, in  $0.150$ mole of each of the following: 

a. $Ne$

b.$I_2$

 c. $N{a}_{2}O$

d. $Ca{\left(N{O}_3\right)}_2$

 e. $C_6{H}_{14}$

Step-by-Step Solution

Answer

The mass, in grams, in$0.150$ mole of each of the following:  

a. $3$g

b. $19.035$g

c.$9.285$g

d. $24.615$g

e. $12.927$g

Part (a) Step 1: Given information

We need to find the mass in grams in $0.150$ moles .

Part (a) Step 2: Explanation

   Here  one mole is atomic mass of substance expressed in grams .

Number of moles=gram molecular weight/molar mass .

So we are given with the number of moles , we know molar mass of substance.

Therefore  mass in grams is $20 \frac{g}{\cancel{moles}}\times 0.150\cancel{ moles }=3$g

Part (b) Step 1: Given information

We need to find the mass in grams in$0.150$ moles .

Part (b) Step 2: Explanation

Here  one mole is atomic mass of substance expressed in grams

 Number of moles=gram molecular weight/molar mass .

So we are given with the number of moles , we know molar mass of substance.

Therefore mass in grams is $126.9\frac{g}{\cancel{moles}} \times 0.150\cancel{ moles}=19.035$g

Part (c) Step 1: Given information

We need to find the mass in grams in$0.150$ moles .

Part (c) Step 2: Explanation

Here  one mole is atomic mass of substance expressed in grams .

So we are given with the number of moles , we know molar mass of substance.

Number of moles=gram molecular weight/molar mass .

Therefore mass in grams is $0.150\cancel{ moles} \times 62 \frac{g}{\cancel{moles}}=9.285$ g

Part (d) Step 1: Given information

We need to find the mass in grams in $0.150$ moles .

Part (d) Step 2: Explanation

Here  one mole is atomic mass of substance expressed in grams .

So we are given with the number of moles , we know molar mass of substance.

Number of moles=gram molecular weight/molar mass .

Therefore mass in grams is $0.150 \cancel{moles} \times 164.1 g/\cancel{mol}=24.615$g

Part (e) Step 1: Given information

We need to find the mass in grams in $0.150$ moles 

Part (e) Step 2: Explanation

Here  one mole is atomic mass of substance expressed in grams .

So we are given with the number of moles , we know molar mass of substance.

Number of moles=gram molecular weight/molar mass .

Therefore mass in grams is $0.150 \cancel{moles} \times 86.18 \frac{g}{\cancel{moles}}=12.927$g