Moles
The SI unit used to measure an amount of a substance
What is a mole?
Calculate the molar mass of KNO3
what is 101 g/mol
What element has a molar mass of 39.1?
What is Potassium
True or False: It is impossible for the molecular formula to be the same as the empirical formula for a compound.
What is false
The proper name for the numerical value 6.02E23
What is Avogadro's number
Which contains more atoms: one mole of silver atoms OR one mole of gold atoms?
What is they both have the same number
How many moles are in 203 grams of KNO3?
What is 2
Type of formula indicates the actual number of atoms of each element present in a compound
What is the molecular formula
Which of the following can 1 mole equal?
Avogadro’s number
6.02 x 1023 particles
molar mass
all of the above
what is all of the above
Find the percent composition of each element in calcium phosphate, Ca3PO4.
55.8%Ca 14.4%P 29.8%O
Which compound has the smallest molar mass?
CO2
CO
H2O2
H2O
H2O
A(n) ________________ formula is the simplest, reduced ratio of elements in a compound.
What is an empirical formula
The mass (in grams) of one mole of any substance is known as:
What is the molar mass
What is the third step when solving for Empirical formula?
What is divide by small
What is the correct unit for molar mass?
a. grams
b. mol
c. grams/mol
d. mol/grams
What is grams/mol
Compare the following formulas: C2H4O2 and CH2O. Which of the following is a TRUE statement describing these formulas?
a. C2H4O2 is the empirical formula.
b. C2H4O2 is the structural formula.
c. CH2O is the empirical formula.
d. CH2O is the molecular formula.
c. CH2O is the empirical formula.
How many molecules are in 16 grams of water
5.35E23
Analysis of eucalyptol indicates it is made from 77.87% C, 11.66% H, and 10.37% O. Determine the empirical formula for this compound.
C10H18O1
The molar mass of calcium permanganate, Ca(MnO4)2
What is 277.9 g/mol
What is the empirical formula for dinitrogen tetroxide?
What is NO2