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Chapter 2: Q.2.85 (page 55)

State the temperature on the Celsius thermometer to the correct number of significant figures: (2.3)

Short Answer

Expert verified

The temperature is $61 . 5^{o} C$

Step by step solution

01

introduction

According to the thermometer portrayed in the figure, every division addresses a one-degree change in temperature. From the figure, it is known with the assurance that the temperature lies somewhere in the range of $61 - 62$ degrees.

02

explanation

Since it shows up someplace somewhere between the two, the temperature can be accounted for as $61 . 5^{o} C$ .

The numbers $6$ and $1$ are sure, while the number $5$ is a guess.

Hence significant figures are certain digits $+$ estimated digits

$2 + 1 = 3$

significant figures are $3$

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Most popular questions from this chapter

Write the numerical value for each of the following prefixes:

a. centi

b. tera

c. milli

d. deci

State the name of the unit and the type of measurement indicated for each of the following quantities:

a. $0.8 L$
b. $3.6 c m$
c. $4 k g$
d. $3.5 h$
e. $373 k$

In which of the following pairs do both numbers contain the same number of significant figures? $(2.2)$

a. localid="1653604988601" $3.44 \times 10^{- 1} g a n d 0.0344 g$

b. localid="1653605013279" $0.0098 s a n d 9.8 \times 10^{4} s$

c. localid="1653605029840" $6.8 \times 10^{3} m a n d 68000 m$

d. localid="1653605046223" $2.58 . 000 g a n d 2.58 \times 10^{- 2} g$

Determine thedensity(g/mL)foreachofthefollowing:

a. A 20.0-mL sample of a salt solution has a mass of 24.0 g.

b. A cube of butter weighs 0.250 lb and has a volume of 130.3 mL.

c. A gem has a mass of 4.50 g. When the gem is placed in a graduated cylinder containing 12.00 mL of water, the water level rises to 13.45 mL.

d. A 3.00-ml sample of medication has a mass of 3.85 g.

a. Write an equality and two conversion factors for Greg's serum iron level.

b. How many micrograms of iron were in the 8.0-ml Sample of Greg's blood?

See all solutions

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