The balanced chemical equation for:
Al + HCl --> AlCl3 + H2
What is 2 Al + 6 HCl --> 2 AlCl3 + 3 H2
100
The number of hydrogen atoms in one mole of silicon tetrahydride.
What is 4 x 6.02 x 10(23) = 2.4 x 10(24)
sig figs don't matter for this question
100
The molar mass of aluminum phosphide.
What is 57.95 g/mole.
100
The term used to describe the ions that undergo no change in a double replacement reaction.
What are spectator ions.
200
The chemical formula for cobalt(II) nitrate.
What is Co(NO3)2.
200
What is the balanced chemical equation for the reaction:
copper(II) carbonate ---> copper(II) oxide + carbon dioxide
What is CuCO3 ---> CuO + CO2
200
The mass of 0.60 mole of carbon dioxide.
What is 0.60 mole * 44.01 g/mole = 26 g
200
The mass of strontium hydroxide that provide 1.25 moles of strontium hydroxide.
What is 152 grams of strontium hydroxide.
200
This is the term for a solid that forms when two aqueous solutions are mixed.
What is a precipitate.
300
The name of FeS.
What is iron(II) sulfide.
300
What is the balanced chemical equation for the reaction:
sodium + chlorine --> sodium chloride
What is 2 Na + Cl2 --> 2 NaCl
300
The number of sucrose molecules in a sample of sucrose, C12H22O11, that contains 3.6 x 10(24) C atoms.
What is 3.6 x 10(24) C atoms * 1 molecule/12 C atoms =
3.0 x 10(23)
300
The number of oxygen atoms in 10.0 grams of sulfur trioxide.
What is 2.26 x 10(23) oxygen atoms.
300
The equation that describes the dissociation of iron(III) chloride in water.
What is FeCl3 --> Fe(3+)(aq) + 3 Cl(1-)(aq)
400
The name of N2O.
What is dinitrogen monoxide.
400
The balanced chemical equation for the reaction between aqueous solutions of potassium carbonate and zinc chloride to yield a precipitate. [Include phase subscripts]
What is K2CO3(aq) + ZnCl2(aq) --> 2 KCl(aq) + ZnCO3(s)
400
The volume (in mL) of 0.750 molar HCl solution needed to provide 0.00500 mole of HCl.
What is 6.67 mL
400
The moles of chloride ion present in 25.0 mL of 0.350 molar vanadium(III) chloride solution.
What is 0.0263 moles of chloride ion.
400
The sample that has more moles of sodium:
50. mL of 0.25 M sodium chloride
50. mL of 0.15 M sodium carbonate
40. mL of 0.15 M sodium phosphate
What is the sodium phosphate solution.
500
The name of the one insoluble compound in the following list:
KCl, NaNO3, NiCO3, Fe(ClO3)3
What is nickel(II) carbonate
500
The balanced complete ionic equation and the balanced net ionic equation for the reaction between aqueous solutions of silver nitrate and sodium phosphate yielding a precipitate. (with complete subscripts)
The mass of copper(II) chloride needed to make 350. mL of 0.500 molar copper(II) chloride solution.
What is 0.175 moles = 23.5 grams copper(II) chloride
500
The moles of magnesium metal needed to react completely with 0.840 moles of oxygen gas when they combine to form magnesium oxide (according the ratio determined by the balanced equation).
What is 1.68 moles of Mg.
500
The concentration of a copper(II) ion in a solution prepared by mixing 20. mL of 0.10 M copper(II) chloride with 30. mL of 0.15 M copper(II) nitrate.