Mole-ionaire Dollar Topic
Calculate the molar mass of SrI2. include units in your answer
341.42 g/mol
Determine the empirical formula of C8H6O4?
C4H3O2
What type of reaction is being described by the following statement?
"The binary ionic compound magnesium oxide can react with carbon dioxide to form an ionic compound containing a polyatomic ion, magnesium carbonate."
synthesis
Given the following reaction, what can you conclude about the mass of Z?
A + C --> Z
mass of Z = mass of A + mass of C
What is wrong with the student's setup to calculate percent composition of oxygen in CO2?
% composition = 32.00/44.01
the student is missing the x100 to convert the decimal into percent
What is the mass of 2.52 moles of Cu atoms. Include units!
160. grams of Cu
What is the molecular formula for CH3CH2COOCH3?
C4H8O2
You accidentally set some propane (C3H8) on fire in the lab. What product(s) did you produce?
What is the mass of KCl produced when 24.51 grams of KClO3 decomposes completely to produce 9.60 grams of O2?
14.91 grams
Does the following single replacement reaction happen spontaneously? Explain why or why not.
Cu + HCl -->
How many moles is 15.3 grams of NO2? the gram formula mass of NO2 is 46.01 g/mol.
0.332 mol of NO2
A substance has an empirical formula of CH2 and a molar mass of 84 grams per mole. The molecular formula for this compound is
C6H12
What metal can be used in a single replacement reaction with CsBr?
possible answers: K, Rb, or Li
What is the coefficient of oxygen gas when this reaction is properly balanced?
CH4(g) + O2(g) --> CO2(g) + H2O(l)
2
What type of reaction is indicated below?
HCl + NaOH --> NaCl + H2O
double replacement
How many particles are in 0.68 mole of Fe? include specific units!
4.09 x 1023 atoms of Fe
Which of the followings can be a molecular formula of the empirical formula CH2O? choose all the apply.
a. C2H4O2
b. C8H6O3
c. CH2O
d. H6C3O3
a, c, and d
Determine the products of the following reaction:
Al + AgCl -->
AlCl3 and Ag
Determine X
4Al + 3O2 --> 2X
What is the percent composition by mass of nitrogen in NH4NO3 (gram-formula mass = 80.0 grams/mole)?
35.0%
What is the gram formula mass of ZnSO4 • 7H2O? Include units!
287.58 g/mol
What is the molecular formula of the compound that has the empirical formula C5H8O2 and a molar mass of 200. grams?
C10H16O4
Write a complete and balanced chemical reaction between
KI + Pb(NO3)2 -->
2KI + Pb(NO3)2 --> 2KNO3 + PbI2
Balance the following reaction
__KCl + __O2 --> __K + __ClO3
2KCl + 3O2 --> 2K + 2ClO3
A 20. gram sample of a hydrate is heated until all the water of hydration is driven off. The mass of the anhydrous compound remaining is 15 grams. What is the percent by mass of water in the hydrate?
25%