Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Which conversion factor would best fit in the space labeled "B" in this diagram? |
C. Molar mass of substance |
|
|
Which is the correct formula for the compound whose percent composition is shown? (pie chart) |
C. KNO3 |
|
|
Which substances have the same empirical formula? (chart of formulas) |
D. Samples 2 and 3 |
|
|
Which is the correct molar mass for the compound FeSO4? |
B. 151.85 g/mol |
|
|
What is the formula for a compound that contains 64.75 g nitrogen and 185.25 g oxygen? |
D. N2O5 |
|
|
The name of a hydrate is calcium chloride dihydrate. What is its formula? |
B. CaCl2 x 2H20 |
|
|
The empirical formula for a compound is CH2), and the molar mass is 180.2 g/mol. Which is the molecular formula for this compound? |
A. C6H12O6 |
|
|
A balloon contains 4.5 x 10^22 atoms of helium (He) gas. Calculate the mass of helium in grams. |
D. .299 g |
|
|
If grams are involved in the problem, then: |
D. Find molar mass. |
|
|
What is the mole ratio of all the substances represented in this figure? |
B. 2:3:2 |
|
|
Gold is reacted with chlorine gas according to the reaction 2 Au + # Cl2 --> 2 AuCl3. Use the data in the table to determine the percent yield of gold chloride. |
C. 58.1 % |
|
|
According to this chemical reaction, which is the number of grams of Fe produced from 14 moles of H2? feO4 (cr) + 4 H2 (g) --> 3 Fe (cr) + 4 H2O (l) |
A. 587 g |
|
|
Which is the correct mole ratio of KsPO4 to KNO3 in the chemical reaction Mg(NO3)2 + K3PO4 --> Mg3(PO4)2 + 3 KNO3? |
C. 1:3 |
|
|
How many moles of KBr will be produced from 7 moles of BaBr2? BaBr2 + K2SO4 --> 2 KBr + BaSO4 |
C. 14 moles |
|
|
How many moles of Cu are needed to react with 5.8 moles of AgNO3? Cu + 2 AgNO3 --> Cu(NO3)2 + 2 Ag |
A. 2.9 moles |
