Chemistry Assignment

Anonymous
timer Asked: Jan 25th, 2019
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Question Description



Match each of the statements on the left to a stage in the scientific method on the right.

Clear All
A can containing diet soda floats when placed in a trough of water, but a can of otherwise identical regular soda sinks.
The artificial sweetener in the diet soda weighs less than the sugar in the regular soda.
Pour the contents of each can into a weighed beaker and let them evaporate to dryness.
Observation
Hypothesis

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Tutor Answer

achiaovintel
School: UC Berkeley

Hey buddy please find attached the solution to your assignment
Find the answer at the bottom of the attachment and please make sure you correctly follow all the instructions before inputting the answer.

Surname 1
Name
Professor
Course
Date
Chemistry Assignment
1. The combustion of fossil fuels is a cause of global warming
Answer: Observation
2. A description of an event that actually occurs in the physical world
Answer: observation
3. A tentative explanation for an observed event that, if true, will enable prediction of
related events
Answer: Hypothesis
4. The results of an unsuccessful test of a hypothesis should be discarded
Answer: true
5. When the mass of helium in a piston at 25oC and 1 atm, was increased from 0.070 grams
to 0.140 grams, the volume of the piston increased from 0.428L to 0.856L.
Answer: Law
6. A chemist finds that 22.38 mL of a certain liquid weighs 35.758g. What is the density of
this liquid?
Answer: 1.5978g/mL
7. What information do we need to determine the density of the liquid sample?
Answer: volume of the liquid sample, mass of the liquid sample
8. What is the mass of a 39.5 mL sample of a liquid, which has a density of 0.818 g/mL?
Answer: 32.311g
9. What information do we need to determine the mass of the liquid sample?
Answer: volume of the liquid sample, density of the liquid sample
10. You have a 100.0mL graduated cylinder containing 50.0mL of water. You carefully place
a 100-g piece of brass (density = 8.56g/mL) into the water. What is the final volume
reading in the graduated cylinder?
Answer: 61.68mL

Surname 2
11. What does the density of a substance represent?
Answer: the mass per unit volume
12. A kilogram of copper occupies a much smaller volume than a kilogram of calcium. What
substance has a much higher density?
Answer: copper
13. Is the density of a gaseous substance likely to be larger or smaller than the density of a
liquid or solid substance at the same temperature? Why?
Answer: Smaller, because gas particles have less mass
14. Referring to the table bel...

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Anonymous
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