ICP 1 Moles and Molar Mass & Types of Reactions

Given the atomic weights of carbon, 12.01; hydrogen, 1.01; and oxygen, 16.0, what is the molar mass of glucose (C[sub 6]H[sub12]O[sub 6])?

180.18 grams

If the atomic weight of nitrogen is 14.0, what is the mass of one mole of nitrogen gas (N[sub 2])?

28.0 g

If the mass of one mole of hydrogen is 1.01 grams; phosphorus, 30.97 grams; and oxygen, 16.0 grams, what is the molar mass of phosphoric acid (H[sub 3]PO[sub 4])?

98.0 grams

When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg^2+. Which statement is true about this reaction?

it involves loss of electrons

Which of these is always equal to the molar mass of any element?

its atomic weight

If chlorine gas is bubbled through an aqueous solution of sodium iodide, the result is elemental iodine and aqueous sodium chloride solution. What kind of reaction took place?

single-replacement

What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?

their number of atoms

Iron (Fe) reacts with copper sulfate (CuSO[sub 4]) to form iron (II) sulfate. In this reaction, Cu^2+ gains electrons to form Cu. Which statement is true about this reaction? Fe(s) + CuSO[sub 4](aq) + FeSO[sub 4](aq) + Cu(s)

Cu undergoes reduction.

What type of reaction is depicted by this equation? MgO(s) + H[sub 2]O(l) + Mg(OH)[sub 2](aq)

combination

What type of reaction is depicted by this equation? 2C[sub 4]H[sub 10](g) + 13O[sub 2](g) --> 8CO[sub 2](g) + 10H[sub 2]O(g)

combustion