Q.1. A student obtains the number 0.40076 on a balance. 4.00 x10If this number actually has (3) significant figures,how should it be written?0.4000.40070.401Q.2. Convert 5324 mL to m' (1000 L=1 m')5.324 x105.3245.324x10'0.5324x10Q.3. A student wants 25.0 g of acetone for a chemical 31.605 mLreaction. If the density of acetone is 0.791 g/mL, howmany milliliters of acetone are needed? (take careabout significant figures)0.316 x1019.719.77Multiple optional

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Q.1. A student obtains the number 0.40076 on a balance. 4.00 x10 If this number actually has (3) significant figures, how should it be written? 0.400 0.4007 0.401

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.48PAE: 1.48 A rock is placed on a balance and its mass is determined as 12.1 g. When the rock is then...

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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

Q.1. A student obtains the number 0.40076 on a balance. 4.00 x10
If this number actually has (3) significant figures,
how should it be written?
0.400
0.4007
0.401
Q.2. Convert 5324 mL to m' (1000 L=1 m')
5.324 x10
5.324
5.324x10'
0.5324x10
Q.3. A student wants 25.0 g of acetone for a chemical 31.605 mL
reaction. If the density of acetone is 0.791 g/mL, how
many milliliters of acetone are needed? (take care
about significant figures)
0.316 x10
19.7
19.77
Multiple optional

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