Questions from General Chemistry

Q: Calculate the number of moles of the indicated substance present in each

Calculate the number of moles of the indicated substance present in each of the following samples. a. 21.2 g of ammonium sulfide b. 44.3 g of calcium nitrate c. 4.35 g of dichlorine monoxide d. 1....

Q: Calculate the number of moles of the indicated substance present in each

Calculate the number of moles of the indicated substance present in each of the following samples. a. 1.28 g of iron(II) sulfate b. 5.14 mg of mercury(II) iodide c. 9.21 µg of tin(IV) oxide d. 1.26...

Q: If you have equal-mole samples of each of the following

If you have equal-mole samples of each of the following compounds, which compound contains the greatest number of oxygen atoms? a. magnesium nitrate b. dinitrogen pentoxide c. iron(III) phosphate...

Q: Calculate the mass in grams of each of the following samples.

Calculate the mass in grams of each of the following samples. a. 3.09 moles of ammonium carbonate b. 4.01 * 10-6 moles of sodium hydrogen carbonate c. 88.02 moles of carbon dioxide d. 1.29 mmol of...

Q: Calculate the number of molecules present in each of the following samples

Calculate the number of molecules present in each of the following samples. a. 3.45 g of C6H12O6 b. 3.45 moles of C6H12O6 c. 25.0 g of ICl5 d. 1.00 g of B2H6 e. 1.05 mmol of Al(NO3)3

Q: Calculate the number of moles of hydrogen atoms present in each of

Calculate the number of moles of hydrogen atoms present in each of the following samples. a. 2.71 g of ammonia b. 0.824 mole of water c. 6.25 mg of sulfuric acid d. 451 g of ammonium carbonate

Q: Although we tend to make less use of mercury these days because

Although we tend to make less use of mercury these days because of the environmental problems created by its improper disposal, mercury is still an important metal because of its unusual property of e...

Q: Calculate the percent by mass of the element mentioned first in the

Calculate the percent by mass of the element mentioned first in the formulas for each of the following compounds. a. sodium azide, NaN3 b. copper(II) sulfate, CuSO4 c. gold(III) chloride, AuCl3 d....

Q: For each of the following unbalanced chemical equations, calculate how many

For each of the following unbalanced chemical equations, calculate how many moles of each product would be produced by the complete conversion of 0.125 mole of the reactant indicated in boldface. Stat...

Q: Ammonium nitrate has been used as a high explosive because it is

Ammonium nitrate has been used as a high explosive because it is unstable and decomposes into several gaseous substances. The rapid expansion of the gaseous substances produces the explosive force. N...