Problem 1 Do the following conversions

a. 0.8 cm = mm

b. 450,000 nm = m

c. 19 kg = g

d. 185,000 ml = kl

Chemistry basics problem relay

significant figures, math and atoms

Problem 2

How many milliseconds has a 95-year-old lived through (365 days in a year)?

Chemistry basics problem relay

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Problem 3

Write in scientific notation. a. 7,456,000,000 = __________

b. 0.00000003844 = __________

Chemistry basics problem relay

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Write in regular notation. c. 3 x 10 8 = __________

d. 6.626 x 10 -34 = __________

Problem 4: Solve for x

(3x + 4)/2 = 20(x +3)

Chemistry basics problem relay

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Problem 5: Find the average atomic mass of element X, name X and write the symbol for each isotope of X and explain the number of protons, neutrons and electrons X has.

element X Mass Exact Percent number mass abundance 35 34.969 75.77 37 36.966 24.23

Chemistry basics problem relay

significant figures, math and atoms

Problem 6: Sig Figs!

a. How many significant figures are in 706.50 cm?

b. 35.001 L + 11 L =

c. 9.00000 m / 3.00 s =

d. Calvin and Hobbes are doing an experiment to find the density of Hobbes. Calvin placed Hobbes into a huge graduated cylinder that had some water in it. The water started out at 5.00 L and it rose to 10.00 L. Calvin also massed Hobbes, and he was approximately 50 kg. What is the density of Hobbes? Does he float? (The density of water is 1000 g/L.)

Chemistry basics problem relay

significant figures, math and atoms