WorksheetsMole Day 3
Total questions: 10
Worksheet time: 5mins
What coefficients are needed to balance the following reaction?
H2 + O2 --> H2O
Balanced as is H2 + O2 --> H2O
2H2 + O2 --> H2O
H2 + 2O2 --> H2O
2H2 + O2 --> 2H2O
What is the effect of adding a catalyst to a reaction
It changes the energy involved in reaction
It changes the amount of product produced
It lowers the energy of activation and speeds of the reaction
all are true
What calculation is made to find the grams needed to make a solution?
volume divided by concentration
concentration divided by volume
volume X concentration
grams X volume
Which of the following units describes a solution in mass/volume
grams/L
grams/ 100mL
moles/ 100mL
moles/liter
Which of the following units is used to find grams of a solute needed when the concentration is mass%?
grams/ mL
grams /100mL
Moles /100mL
Moles/L
What is a mole?
The base unit measuring amount of a substance - 6.02 x 1023
The grams of a compound in one liter
6.02 x 1023 grams of an element or compound
the number of protons in grams
What are the units in molarity?
grams/ mL
grams in 100mL of solution
the moles in 100mL of solution
moles of solute in 1 Liter
What formula is used when calculating the volume of a concentrated solution needed for dilution?
Volume X Concentration
V1C1 = V2C2
volume/concentration
concentration / volume
What is the mass of 1 mole of water?
6.02 X 1023 g
16g
18g
1 gram
A homogeneous mixture transparent to light is
a mixture
a solution
an emulsion
a suspension
