Indicate to what decimal position readings should be estimated and recorded (nearest 0.1 , 0.01 , etc .) for measurements made with the following devices: a. A buret with a smallest scale marking of 0.1 mL b. A graduated cylinder with a smallest scale marking of 1 mL c. A thermometer with a smallest scale marking of 0.1 ° C d. A barometer with a smallest scale marking of 1 torr
Indicate to what decimal position readings should be estimated and recorded (nearest 0.1 , 0.01 , etc .) for measurements made with the following devices: a. A buret with a smallest scale marking of 0.1 mL b. A graduated cylinder with a smallest scale marking of 1 mL c. A thermometer with a smallest scale marking of 0.1 ° C d. A barometer with a smallest scale marking of 1 torr
Solution Summary: The author explains that significant figures are used to express a measurement in scientific notation.
Indicate to what decimal position readings should be estimated and recorded (nearest
0.1
,
0.01
,
etc
.) for measurements made with the following devices:
a. A buret with a smallest scale marking of
0.1
mL
b. A graduated cylinder with a smallest scale marking of
1
mL
c. A thermometer with a smallest scale marking of
0.1
°
C
d. A barometer with a smallest scale marking of
1
torr
A gas storage cylinder in an ordinary chemical laboratory measures
3.6cm
wide and
14.cm
high.This is the label on it.
Contents:
N2
gas
Pressure:
22.4atm
If the cylinder is opened and the gas allowed to escape into a large empty plastic bag, what will be the final volume of nitrogen gas, including what's collected in the plastic bag and what's left over in the cylinder? Write your answer in liters. Round your answer to
2
significant digits.
L
1.Which is heavier?
1 (a)Group of answer choices
1.3 kg
1.3 lbs
1.3 g
(b)Which is shorter?
Group of answer choices
0.01 hr
25 s
2500 ms
(c)
Which is more in total?
Group of answer choices
1.50lbs + 678g
0.98kg + 22,500mg
Pheromones are compounds secreted by females of many insect species to attract mates. Typically, 1.0 × 10−8 g of a pheromone is sufficient to reach all targeted males within a radius of 0.50 mi. Calculate the density of the pheromone (in grams per liter) in a cylindrical air space having a radius of 0.50mi and a height of 40ft
Chapter 1 Solutions
Chemistry for Today: General, Organic, and Biochemistry
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell