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Chapter 3: Q5 P (page 61)

Write each answer with the correct number of digits.

(a)1.021+2.69=3.711

(b) 12.3-1.63=10.63

(c)4.34脳92=39.928

(d)0.0602梅(2.113脳104)=2.84903脳10-6

(e)log(4.218脳1012)=?

(f)antilog(-3.22)=?

(g)localid="1663318436617" 102384=?

Short Answer

Expert verified

a) 3.7

b) 10.7

c)4.0脳101

d) 2.85脳10-6

e) 12.6251

f)6.0脳10-4

g) 242

Step by step solution

01

Definition of digit.

Any of the digits from 0 to 9, especially when used as part of a number, is referred to as a digit.

02

Determine the correct number of digits.

a) 1.021+2.69=3.711=3.7

b) 12.3-1.63=10.67=10.7

c)4.34脳9.2=39.928=4.0脳101

d) 0.0602/42.113脳104=2.84903脳10-6=2.85脳10-6

e)log(4.218脳1012)=12.6251

f) antilog(-3.22)=6.0脳10-4

g)102.384=242

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Most popular questions from this chapter

Cheryl, Cynthia, Carmen, and Chastity shot the following targets at Girl Scout camp. Match each target with the proper description.

(a) accurate and precise

(b) accurate but not precise

(c) precise but not accurate

(d) neither precise nor accurate

(a) Show that formulamassofNaCIis58.442卤0.006g/mol(b) To prepare a solution of NaCI , you weigh out 2.634(60.002)g and dissolve it in a volumetric flask whose volume is 100.00(60.08)mL Express the molarity of the solution, along with its uncertainty, with an appropriate number of digits.

Vernier scale. The figure below shows a scale found on instruments such as a micrometer caliper used for accurately measuring dimensions of objects. The lower scale slides along the upper scale and is used to interpolate between the markings on the upper scale. In (a), the reading (at the left-hand 0 of the lower scale) is between 1.4and 1.5on the upper scale. To find the exact reading, observe which mark on the lower scale is aligned with a mark on the upper scale. Because theon the lower scale is aligned with the upper scale, the correct reading is 1.46. Write the correct readings in (b) and (c) and indicate how many significant figures are in each reading.

Express the molecular mass 卤uncertaintyof C9H9O6N3 with the correct number of significant figures.

Write each answer with the correct number of significant figures.

(a)1.0+2.1+3.4+5.8=12.3000

(b) 106.9 - 31.4 = 75.5000

(c)107.868(2.113脳102)+(5.623脳103)=5519.568

(d)(26.14/37.62)脳4.38=3.043413

(e(26.14/37.62脳108)脳(4.38脳10-2)=3.043413脳10-10

(f)(26.14/3.38)+4.2=4.5999

(g)log(3.98脳104)=4.5999

(h)10-6.31=4.89779脳10-7
See all solutions

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