Red
Blue
Green
Yellow
Surf Green
100

The formula for Calcium oxide

CaO

100

NH3 + Na  --> NaNH2  +  H2

How many grams of H2 can be produced from 16.o g of Na and unlimited NH3?

.70 grams

100

Which is stronger, the bond between C and O in CO2, or the bond between Li and F in LiF?

LiF

100

In a reaction, the theoretical yield is 117 grams, and the percent yield was 85%. What was the actual yield?

99.45 grams

100

How many centimeters are in 45.70 Meters?

4570 cm.

200

The name of SnO2

Tin IV oxide

200

NH3 + Na  --> NaNH2  +  H2

How many grams of H2 can be produced from 16.o g of NH3 and unlimited Na?

.94 grams

200
Is the "explanation" for a set of observations.
What is scientific theory?
200

In a reaction, the actual yield was 412.0 grams, and the percent yield was 54%. What was the theoretical yield?

763.0 grams

200

According to the following reaction

NaOH  + HCl  -->  NaCl  +  H2O

How many grams of NaCl will be produced if 60.0 grams of water are produced?

195 grams

300

The name of MgCl2

What is Magnesium chloride

300

NH3 + Na  --> NaNH2  +  H2

How many grams of H2 can be produced from 11.4 g of Na and 38.9g of NH3?

0.67 grams

300
Analyze, Calculate, and Evaluate are parts of this type of problem.
What is a numeric word problem?
300

The following reactions was carried out;

2H2 + O2  ---> 2H2O

98 grams of H2O was produced. If 47.5 grams of H2 were used, what percent yield is this?

23.0%

300

According to the decomposition of water;

H2O  -->  H2  +  O2

If 38.5 grams of H2O is used, how many grams of Oxygen would be produced if the % yield is 87%?

29.77 grams

400

The correct formula for Ammonium hydroxide

NH4OH

400

2H2 + 02  ----> 2H2O

If I have 6.3 grams of H2 and 41.9 grams of O2 reacting to form H2O, how many grams excess reactant will there be? 

1.1 grams

400
Analyzing and Solving are part of this type of problem.
What is a conceptual problem?
400

In the following reaction

Fe  +  O2  --> Fe2O3

118.0 grams Fe are combined with 98.0 g of O2.

How many grams of Fe2O3 are produced?

168.5 grams


400

According to the following reaction

Fe + Cl2  -->  FeCl3

If 2.00 moles of iron are combined with 3.00 moles of Cl, how many moles of FeCl3 could be produced?

2.00

500

The correct formula for Strontium Nitrate

Sr(NO3)2

500

2H2 + 02  ----> 2H2O

If I have 4.1 grams of H2 and 38.0 grams of O2 reacting to form H2O, how many moles excess reactant will there be? 

0.165 moles

500
This is the system of analyzing problems by canceling units.
What is dimensional analysis?
500

What ion has a +2 charge, and has a configuration ending in 3p6?

Ca +2

500

According to the following reaction

C6H5COOH  +  O2  --> CO2  +  H2O

289.5 grams of C6H5COOH are combined with 22.5 grams of O2. How many grams of CO2 are produced and how many grams of excess are there?

28.7 g CO2 are produced, 277.8 g excess C6H5COOH

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