What conversion factor will help solve the problem? 2HgO → 2Hg + O2

How many moles of mercury (II) oxide are needed to make 125 grams of O2

125 g O2 x ___1 mol__O2 x = mols HgO

32.00 g O2

a
2 mol Hg

1 mol O2

b
216.6 g HgO

1 mol HgO

c
1 mol O2

2 mol HgO

d
2 mol HgO

1 mol O2

How would you reduce the volume of gas

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.