Chemistry, 25.03.2021 20:00, KRLoopy4722
2. Practice: Look at the quantities mentioned in the Metric units only Distance problems. For
each value, state the number of significant digits in the first column and the rule(s) you used
to determine the number of significant digits. The first has been done for you.
Question
Number of
significant digits
Rule(s) used
I
3
1.4
The tallest building in the world, the Burj Khalifa in
Dubai, is 0.828 kilometers high.
The largest human cell is the egg cell, with a
diameter of 121 micrometers.
On a caterpillar's map, all distances are marked
in millimeters. The caterpillar's map shows that
the distance between two milkweed plants is
4,012 millimeters.
The closest star to our Sun is Proxima Centauri,
which is 4.242 light years away.
A helium atom has a diameter of 9.8. 10°
meters.
Answers: 1
Chemistry, 22.06.2019 04:30, EinsteinBro
Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.
Answers: 1
Chemistry, 22.06.2019 15:20, munziruddin204
Which description best characterizes the motion of particles in a solid?
Answers: 2
Chemistry, 22.06.2019 19:50, ellycleland16
Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+
Answers: 1
2. Practice: Look at the quantities mentioned in the Metric units only Distance problems. For
each...
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