Some Basic Concepts of Chemistry Quiz 2

Question 1

180 g of glucose $(C_6 H_{12} O_6 )$ contains &hellip;&hellip;&hellip;&hellip;&hellip;. carbon atoms.

Accepted Answer

$3.6 \times 10 ^{24}$

Answer

$1.8 \times 10 ^{23}$

Answer

$1.8 \times 10 ^{24}$

Answer

$3.6 \times 10 ^{23}$

Question 2

The number of molecules present in 8 g of oxygen gas is &hellip;&hellip;&hellip;

Accepted Answer

$1.5 05 \times 10 ^{23}$

Answer

$6.022 \times 10 ^{23}$

Answer

$3.011 \times 10 ^{23}$

Answer

$12.044 \times 10 ^{23}$

Question 3

The number of molecules in 22.4 $cm^3$ of ozone gas at STP is &hellip;&hellip;&hellip;&hellip;

Accepted Answer

$6.022 \times 10 ^{20}$

Answer

$6.022 \times 10 ^{23}$

Answer

$22.4 \times 10 ^{20}$

Answer

$22.4 \times 10 ^{23}$

Question 4

11.2 $cm^3$ of hydrogen gas at STP, contains &hellip;&hellip;&hellip;&hellip;&hellip;.. moles.

Accepted Answer

0.0005

Answer

0.01

Answer

0.029

Answer

0.5

Question 5

The mass of 224 mL of hydrogen gas at STP is

Accepted Answer

0.02 g

Answer

0.224 g

Answer

2.24 g

Answer

20.0 g

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