Chapter 7: Q. 7.93 (page 255)

How many grams are in $0.150$ moleof each of the following? ( $7.3$ )
a. $K$
b. ${Cl}_{2}$
c. $N a_{2} C O_{3}$

Short Answer

Expert verified

(a) The mass of $K$ in localid="1653465720314" $0.150$ moleis localid="1653465731820" $5.87$ g

(b) The mass of $C l_{2}$ in localid="1653465747900">0.150moleis localid="1653465893353" role="math" $10.6$ g

Step by step solution

Part (a) Step 1: Given information

We need to find the mass of given element i.e. $K$

Part (a) Step 2: Explanation

We know that

Molar mass of $K$ is localid="1653483743125" $39 g / mole$

And a mole of the element is equal to molar mass

Therefore,

localid="1653483757545" $1 mole = 39 g 0.15 mole = \frac{39 g \times 0.150 mole}{mole} = 5.87 g$

Part (b) Step 1: Given information

We need to find the mass of given compound i.e. ${Cl}_{2}$

Part (b) Step 2: Explanation

We know that

Molar mass of ${Cl}_{2}$ islocalid="1653483785033" $71 g / mole$

And a mole of the element is equal to molar mass

Therefore,

localid="1653483798412" $1 mole = 71 g 0.150 mole = \frac{71 g \times 0.150 mol}{mol} = 10.6 g$

Part (c) Step 1: Given information

We need to find the mass of given compound i.e. ${Na}_{2} {CO}_{3}$

Part (c) Step 2: Explanation

We know that

Molar mass of ${Na}_{2} {CO}_{3}$ islocalid="1653483821807" $106 g / mole$

And a mole of the element is equal to molar mass

Therefore,

localid="1653483833462" $1 mole = 106 g 0.150 mole = \frac{106 g \times 0.150 mol}{mol} = 15.9 g$

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How many grams are in $0.150$ moleof each of the following? ( $7.3$ )
a. $K$
b. ${Cl}_{2}$
c. $N a_{2} C O_{3}$

Short Answer

Step by step solution

Part (a) Step 1: Given information

Part (a) Step 2: Explanation

Part (b) Step 1: Given information

Part (b) Step 2: Explanation

Part (c) Step 1: Given information

Part (c) Step 2: Explanation

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How many grams are in 0.150moleof each of the following? (7.3)a.Kb. Cl2c.Na2CO3

Short Answer

Step by step solution

Part (a) Step 1: Given information

Part (a) Step 2: Explanation

Part (b) Step 1: Given information

Part (b) Step 2: Explanation

Part (c) Step 1: Given information

Part (c) Step 2: Explanation

One App. One Place for Learning.

Most popular questions from this chapter

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How many grams are in $0.150$ moleof each of the following? ( $7.3$ )
a. $K$
b. ${Cl}_{2}$
c. $N a_{2} C O_{3}$