Question

question 2 (2 points)
answer the questions about the balanced reaction 3a + 2b → 1c + 100. cal
how many moles of b are required to make 1 mole of c? 1
how many moles of b are required to make 2 moles of c? 2
is the relationship between moles of a and c a direct proportion? 3
a. 0 b. 1 c. 2 d. 3 e. 4 f. 5 g. 6 h. 7
i. yes j. no

question 3 (3 points)
answer the questions about the balanced reaction 3a + 2b → 1c + 100. cal
how many moles of a are required to react with 2 mole of b? 1
how many moles of a are required to react with 4 moles of b? 2
is the relationship between moles of a and c a direct proportion? 3
a. 0 b. 1 c. 2 d. 3 e. 4 f. 5 g. 6 h. 7
i. yes j. no

Explanation:

Question 2

How many moles of B are required to make 1 mole of C?

From the balanced reaction \(3A + 2B
ightarrow1C+100.cal\), the mole ratio of \(B\) to \(C\) is \(2:1\). So, for \(1\) mole of \(C\), \(2\) moles of \(B\) are required.

How many moles of B are required to make 2 moles of C?

Using the mole ratio \(B:C = 2:1\), if \(n(C)=2\) moles, then \(n(B)=2\times2 = 4\) moles.

Is the relationship between moles of A and C a direct proportion?

The mole ratio of \(A:C=3:1\). Let \(n(A)=x\) and \(n(C)=y\), then \(x = 3y\). This is in the form \(y=kx\) (\(k=\frac{1}{3}\)), so it is a direct proportion.

Question 3

How many moles of A are required to react with 2 moles of B?

From the balanced reaction \(3A + 2B
ightarrow1C+100.cal\), the mole ratio of \(A:B = 3:2\). If \(n(B) = 2\) moles, then \(n(A)=3\) moles.

How many moles of A are required to react with 4 moles of B?

Using the mole ratio \(A:B=3:2\), if \(n(B) = 4\) moles, then \(n(A)=\frac{3}{2}\times4=6\) moles.

Is the relationship between moles of A and C a direct proportion?

The mole ratio \(A:C = 3:1\). Let \(n(A)=x\) and \(n(C)=y\), then \(x = 3y\). This is of the form \(y = kx\) (\(k=\frac{1}{3}\)), so it is a direct proportion.

Answer:

Question 2

• How many moles of B are required to make 1 mole of C? C. 2
• How many moles of B are required to make 2 moles of C? E. 4
• Is the relationship between moles of A and C a direct proportion? I. yes

Question 3

• How many moles of A are required to react with 2 moles of B? D. 3
• How many moles of A are required to react with 4 moles of B? G. 6
• Is the relationship between moles of A and C a direct proportion? I. yes