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Chapter 2: Q2.94P (page 84)

Correct each of the following formulas:

a. Barium oxide isBaO2

b. Iron(II) nitrate isFe(NO3)3

c. Magnesium sulfide isMnSO3

Short Answer

Expert verified

The correct formulas are

a. Ba2++O2-鈫�BaO

b. Fe2+NO31-鈫�Fe(NO3)2

c.Mg2++S2-鈫�MgS

Step by step solution

01

Step 1:Formula of barium oxide

Barium has a charge of +2 and oxide has a charge of -2.

The charges of each ion will just interchange as subscripts of its molecular formula.

The subscript should also be reduced to the smallest whole numbers that retain the ratio of the atoms.

Barium oxide isBa2++O2-鈫�BaO .

02

Formula of iron(II) nitrate

Iron has a charge of +2 and nitrate has a charge of -1.

The charges of each ion will just interchange as subscripts of its molecular formula

Iron (II) nitrate isFe2+NO31-鈫�Fe(NO3)2 .

03

Formula of magnesium sulfide

Magnesium has a charge of +2 and sulfide has a charge of - 2.

The charges of each ion will just interchange as subscripts of its molecular formula

The subscript should also be reduced to the smallest whole numbers that retain the ratio of the atoms.

Magnesium sulfide is Mg2++S2-鈫�MgS.

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Most popular questions from this chapter

The following charges on individual oil droplets were obtained during an experiment similar to Millikan's. Determine a charge for the electron( in coulombs), and explain your answer:
-1.602脳1019C;-4.806脳10-19C;-8.010脳10-19A;-14.42脳10-19C

State the mass law(s) demonstrated by the following experimental results, and explain your reasoning:

Experiment 1: A student heats 1.27 g of copper and 3.50 g of iodine to produce 3.81 g of a white compound; 0.96 g of iodine remains.

Experiment 2: A second student heats 2.55 g of copper and 3.50 g of iodine to form 5.25 g of a white compound, and 0.80 g of copper remains.

Which of Dalton鈥檚 postulates about atoms are inconsistent with later observations? Do these inconsistencies mean that Dayton was wrong? Is Dalton鈥檚 model still useful? Explain.

The elements inGroups1A(1)and7A(17)are all quite reactive. What is the major difference between them?

(a) Does the percent by mass of each element in a compound depend on the amount of compound? Explain.

(b) Does the mass of each element in a compound depend on the amount of compound? Explain.
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