Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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5.6 x 1012 is ... *
Small than 1
O Larger than 1
60,900,000 is equal to
*
6.9 x 10°
6.09 x 106
O 6.09 x 107
O 6.9 x 107
x 100 (100 is exact)
e.
9.875 x 102
5. a) At what temperature is the temperature in degrees Fahrenheit equal to
twice the temperature in degrees Celsius?
b) The average daytime temperatures on earth and Jupiter are 72 °F and
313 K, respectively. Calculate the difference in temperature, in C.
between these two planets.
6. For a material to float on the surface of the water, the material must
have a density less than that of water (1.0 g/mL) and must not react with
the water or dissolve in it. A spherical ball has a radius of 0.50 cm and
weighs 2.0 g. Will this ball float or sink when placed in water? (Note:
Volume of a sphere r .)
7. a)Using examples, explain the difference between a physical property and
a chemical property. b) Do the following statements describe chemical or
physical properties?
(i) Oxygen gas supports combustion. (ii) Fertilizers help to increase
agricultural production. ii) Water boils below 100°C on top of a
mountain. (iv) Lead is denser than aluminum. (v) Uranium…
A proton has a radius of approximately 1.0×10−13 cmcm and a mass of 1.7×10−24 gg. Determine the density of a proton. For a sphere V=(43)πr3V=(43)πr3.
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