What is the mass of 5.45 x 10 -3 mol of glucose C 6 H 12 O 6? O a. 981 g b.0.981 g O c. 0.158 g O d.3.03 x 10-5 g

Fe2O36) + 2 Alis) Al2O316) + 2 Fe() ------> 159.70 26.98 101.96 55.85 Molar masses in g/mol If 40. g of iron (III) oxide are combined with 12.5 g of aluminum how many grams of molten iron are formed? O 18 g O 47 g 28 g O 26 g

29. Consider the following balanced equation: 2N₂O5 ‒‒‒‒‒‒‒> 4NO₂ How many moles of N₂0s are required to produce 62.7 g of NO₂ ? b. 2.73 mol e. 0.681 mol a. 73.6 mol d. 0.00631 mol + O₂ C. 1.36 mol

4. Modern pewter is composed of 91.0% Sn, 7.5% Sb and 1.5 % Cu. What mass of pewter contains 150. g of Sb? What mass of Cu is in 212 g of pewter? 91.0g Snx Imole In X I mole In = 108 mole In 118.71g Sn

1A. You have 33.5g MnO3. How many molecules do you have?1B. You have 4.6x1024 molecules O2. How many grams do you have?1C. You have 6.54x1022 molecules Fe2O3. How many grams do you have?1D. You have 43.2g of Cobalt. How many atoms do you have?

[R A 1.98 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 2.71 x 1044 N,0 molecules 6. a. How many nitrogen atoms are in this sample? atoms b. How many nitrogen atoms are in 2.37 g of nitrous oxide? atoms

A. What is the density of an unknown liquid if 15.00 mL of the unknown has a mass of 12.257 g? B. A sample of chromium is heated in a crucible over a Bruson burner until the chromium turns into a grey powder. If the original chromium had a mass of 0.357 g and the chromium oxide has a mass of 0.522 g, what is the empirical formula of the chromium oxide?

The concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients. a. Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 32 slices of bread and 57 slices of cheese. b. Which of the two ingredients limits the number of sandwiches that can be made: slices of bread, or slices of cheese? c. What quantity of the ingredient in excess remains?