Question 3: How many atoms are in 25.00 g of B.
A. 1.393 x 10^24 atoms of B
B. 1.333 x 10^23 atoms of B
C. 2.16 x 10^26 atoms of B
D.217 x 10^24 atoms of B
Question 4:
How many grams is 2.393 x 10^24 atoms of O
A. 70.45 g O
B. 140.9 g O
C. 63.58 mole O
D. 63.58 g O
Please answer both questions if you can, thanks for all the efforts :)

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

In which phase(s) do the molecules take the shape of the container?