Chemistry - Quiz 1: Toolbox TO Solubility
0.000357 mol - ANS-How many moles does 10.0 mg of CO represent?
0.1 M - ANS-Which solution of NaI would be most dissociated?
0.87 g - ANS-How many grams of CO are in 125 mL of a 0.25 M solution?
1. When ionic character decreases, electrical conductivity decreases. - ANS-What relationship
seems to be true?
18.02 g - ANS-Determine the molecular weight of H 2 O.
2
2
blank - ANS-Balance this chemical equation. A coefficient of "1" is understood. Choose option
"blank" for the correct answer if the coefficient is "1."
____H 2 O 2 →_____H 2 O +_____O 2
2. distilled water
5. sucrose C ¹² H ²² O ¹¹ (dissolved in water) - ANS-Which of the following choices would be a
nonconducting substance or solution? (More than one may be correct.)
2. H ³ O +
4. NH ⁴ +
6. H ² PO ⁴ - - ANS-Select all the species that are ions.
290 g - ANS-Potassium fluoride (KF), a salt, has a molecular weight of 58.10 grams. How many
grams would be needed to make 1.0 liter of 5.0 molar salt solution?
3
2
2 - ANS-N₂ + 3H₂ 2NH₃
How many molecules of H 2 are in the reactants?
How many nitrogen atoms are present?
How many moles of NH 3 are formed?
310.18 g - ANS-Determine the molecular weight of Ca 3 (PO 4 ) 2 .
4.5
x 10²³ molecules - ANS-Calculate the number of molecules in 0.75 mole of CH 4 .
0.000357 mol - ANS-How many moles does 10.0 mg of CO represent?
0.1 M - ANS-Which solution of NaI would be most dissociated?
0.87 g - ANS-How many grams of CO are in 125 mL of a 0.25 M solution?
1. When ionic character decreases, electrical conductivity decreases. - ANS-What relationship
seems to be true?
18.02 g - ANS-Determine the molecular weight of H 2 O.
2
2
blank - ANS-Balance this chemical equation. A coefficient of "1" is understood. Choose option
"blank" for the correct answer if the coefficient is "1."
____H 2 O 2 →_____H 2 O +_____O 2
2. distilled water
5. sucrose C ¹² H ²² O ¹¹ (dissolved in water) - ANS-Which of the following choices would be a
nonconducting substance or solution? (More than one may be correct.)
2. H ³ O +
4. NH ⁴ +
6. H ² PO ⁴ - - ANS-Select all the species that are ions.
290 g - ANS-Potassium fluoride (KF), a salt, has a molecular weight of 58.10 grams. How many
grams would be needed to make 1.0 liter of 5.0 molar salt solution?
3
2
2 - ANS-N₂ + 3H₂ 2NH₃
How many molecules of H 2 are in the reactants?
How many nitrogen atoms are present?
How many moles of NH 3 are formed?
310.18 g - ANS-Determine the molecular weight of Ca 3 (PO 4 ) 2 .
4.5
x 10²³ molecules - ANS-Calculate the number of molecules in 0.75 mole of CH 4 .
