[سعدوشه]

3. The volume of a sample of nitrogen is 6.00 liters at 35oC and 740 torr. What volume will it occupy at STP?
a) 6.59 L
b) 5.46 L
c) 6.95 L
d) 5.18 L

كيف طلع الجواب d
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11. What mass of K2CO3
?? is needed to prepare 200 mL of a solution having a potassium ion concentration of 0.150 M
a) 4.15 g
b) 10.4 g
c) 13.8 g
d) 2.07 g


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