Chapter 2, Problem 2.71E

1. Provide the chemical formula (including brackets where appropriate) or systematic name for the following compounds. (a) gold(I) hypoiodite (b) HI(aq): (f) Ca(ClO4)2·4H2O: 2. What mass (in g) of chlorine atoms are there in a sample that consists of 5e+23 molecules of molecular chlorine? INSTRUCTIONS: Report your answer to 3 significant figures in scientific notation unless stated otherwise. DO NOT include the units in your answer.

Name the following ionic compounds: (a) Li,O, (b) FeCl3, (c) NaC10, (d) CaSO3, (e) Cu(OH)2, (f) Fe(NO3)2, (g) Ca(CH3COO)2, (h) Cr2(CO3)3, (i) K2CrO4, (j) (NH4)2SO4.

Write the chemical formulas for (a) potassium sulfide, (b) calcium hydrogen carbonate c) nickel(II) perchlorate. for (d) silicon tetrabromide, (e) disulfur dichloride.

The number of protons, neutrons, and electrons, respectively, in the ionic species 209 9Bi* :3+ 83 are: (A) 83, 126, 80; (B) 83, 209, 80; (C) 86, 209, 83; (D) 83, 126, 86;

Name the following ionic compounds: (a) K,Cr,O7, (b) Li,C,O4, (c) CUNO3.

Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of helium that contains 2.33 × 1021 atoms.

(a) What is a hydrocarbon? (b) Butane is the alkane with a chain of four carbon atoms. Write a structural formula for this compound and determine its molecular and empirical formulas.

A student weighs a sample of carbon on a balance that is accurate to 0.001 g. (a) How many atoms are in 0.001 g of C?(b) The carbon is used in the following reaction: Pb₃O₄(s) +C(s)→3PbO(s) +CO(g) What mass difference in the lead(II) oxide would be caused by an error in the carbon mass of 0.001 g?

Which compound of calcium is used for swimming pool water and sewage treatment?           (A) Calcium hydroxide, Ca(OH)2           (B) Calcium hypochlorite, Ca(OCl)2                   (C) Calcium carbonate, CaCO3               (D) Calcium oxide, CaO