Chapter 1: Q. 1.28 (page 19)

Whichnumberineachofthefollowingpairsissmaller?
a. $4.9 \times 10^{- 3} o r 5.5 \times 10^{- 9}$
b. $1250 o r 3.4 \times 10^{2}$
c. $0.000 000 4 o r 5.0 \times 10^{2}$
d. $2.50 \times 10^{2} o r 4 \times 10^{5}$

Short Answer

Expert verified

a. In this pair $(4.9 X 10^{- 3} a n d 5.5 X 10^{- 9})$ smaller number is localid="1652283198439" $5.5 \times 10^{- 9}$ .

b. In this pair localid="1652283204003" $(1250 a n d 3.4 \times 10^{2})$ smaller number is $340$ .

c. In this pair localid="1652283209836" $(0.000 000 4 a n d 5.0 \times 10^{2})$ smaller number is $0.000 000 4$ .

d. In this pairlocalid="1652283217902" $(2.50 \times 10^{2} a n d 4 \times 10^{5})$ smaller number is localid="1652283224139" $2.50 \times 10^{2}$ .

Step by step solution

Part (a) step 1: Given Information

We need to find which number $4.9 \times 10^{- 3} a n d 5.5 \times 10^{- 9}$ is smaller.

Part (a) step 2: Calculation

Convert $4.9 \times 10^{- 3}$ to normal notation

$= 0.0049$

Convert $5.5 \times 10^{- 9}$ to normal notation

$= 0.0000000055$

Now,

$0.0049 > 0.0000000055$

So, the smaller is $5.5 \times 10^{- 9}$ .

Part (b) step 1: Given Information

We need to find which number $1250 a n d 3.4 \times 10^{2}$ is smaller.

Part (b) step 2: Calculation

$1250$ is already in normal notation

Convert $3.4 \times 10^{2}$ to normal notation

$= 340$

Now,

$1250 > 340$

So, the smaller is $3.4 \times 10^{2}$ .

Part (c) step 1: Given Information

We need to find which number $0.000 000 4 a n d 5.0 \times 10^{2}$ is smaller.

Part (c) step 2: Calculation

$0.0000004$ is already in normal notation

= $0.0000004$

Convert $5.0 \times 10^{2}$ to normal notation

= $500$

Now,

$500 > 0.0000004$

So, the smaller is $0.0000004$ .

Part (d) step 1: Given Information

We need to find which number $2.50 \times 10^{2} a n d 4 \times 10^{5}$ is smaller.

Part (d) step 2: Calculation

Convert $2.5 \times 10^{2}$ to normal notation

$= 250$

Convert $4 \times 10^{5}$ to normal notation

$= 400000$

Now,

$40000 > 250$

So, the smaller is $2.5 \times 10^{2}$ .

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Whichnumberineachofthefollowingpairsissmaller?
a. $4.9 \times 10^{- 3} o r 5.5 \times 10^{- 9}$
b. $1250 o r 3.4 \times 10^{2}$
c. $0.000 000 4 o r 5.0 \times 10^{2}$
d. $2.50 \times 10^{2} o r 4 \times 10^{5}$

Short Answer

Step by step solution

Part (a) step 1: Given Information

Part (a) step 2: Calculation

Part (b) step 1: Given Information

Part (b) step 2: Calculation

Part (c) step 1: Given Information

Part (c) step 2: Calculation

Part (d) step 1: Given Information

Part (d) step 2: Calculation

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Whichnumberineachofthefollowingpairsissmaller?a.4.9×10-3or5.5×10-9b.1250or3.4×102c.0.0000004or5.0×102d.2.50×102or4×105

Short Answer

Step by step solution

Part (a) step 1: Given Information

Part (a) step 2: Calculation

Part (b) step 1: Given Information

Part (b) step 2: Calculation

Part (c) step 1: Given Information

Part (c) step 2: Calculation

Part (d) step 1: Given Information

Part (d) step 2: Calculation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemistry Branches

Chemical Analysis

Chemical Reactions

Ionic and Molecular Compounds

Physical Chemistry

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.

Whichnumberineachofthefollowingpairsissmaller?
a. $4.9 \times 10^{- 3} o r 5.5 \times 10^{- 9}$
b. $1250 o r 3.4 \times 10^{2}$
c. $0.000 000 4 o r 5.0 \times 10^{2}$
d. $2.50 \times 10^{2} o r 4 \times 10^{5}$