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Question #7: After lithium hydroxide is produced aboard the space shuttle by reaction of Li2OLi2O with...

Question #7:

After lithium hydroxide is produced aboard the space shuttle by reaction of Li2OLi2O with H2OH2O (Li2O(s)+H2O(g)→2LiOH(s))(Li2O(s)+H2O(g)→2LiOH(s)), it is used to remove exhaled carbon dioxide from the air supply according to the equation
LiOH(s)+CO2(g)→LiHCO3(s)

A) How many grams of CO2CO2 can 410.0 gg of LiOHLiOH absorb?

Question #8:

An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOzCxHyOz). Combustion of 7.00 gg of this compound produced 10.3 gg of carbon dioxide and 4.20 gg of water.

A) How many moles of carbon, CC, were in the original sample?Express your answer to three significant figures and include the appropriate units.

B) How many moles of hydrogen, HH, were in the original sample?Express your answer to three significant figures and include the appropriate units.

Question#9:

How many moles of solute are present in the following solutions?

A)140 mLmL of 0.23 MM NaHCO3

B) 606.0 mLmL of 2.65 MM H2SO4

Question #10:

How many grams of solute would you use to prepare the following solutions?

A) 387.5 mLmL of 1.16 MM NaOHNaOH. Express your answer with the appropriate units.

B) 1.55 LL of 0.349 MM glucose (C6H12O6)(C6H12O6). Express your answer with the appropriate units.

Question#11:

What volume of 0.244 MM H2SO4H2SO4 is needed to react with 52.6 mLmL of 0.101 MM NaOHNaOH? The equation is
H2SO4(aq)+2NaOH(aq)→Na2SO4(aq)+2H2O(l)H2SO4(aq)+2NaOH(aq)→Na2SO4(aq)+2H2O(l)

Answer in mL

Question 12:

How many grams of solute would you use to prepare each of the following solutions?

A) 250.0 mLmL of 0.650 MM ethyl alcohol (C2H6O)

Answer: m =7.49g

B) 169 mL of 0.180 M boric acid (H3BO3) Answer in grams

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Answer #1

7. A) Li OH (8) + co2(g) hi HCO3 (s) LiOH and co₂ reacts in molar mass LOH = 2395 contain 1:1 molar ratio of grmol 410g Lion1st 5 subparts solved

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