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Agata [3.3K]
2 years ago
11

Indicate the number of significant figures in the following measured numbers:

Chemistry
1 answer:
inysia [295]2 years ago
3 0

Answer: a = 2 ; f = 5 ; b = 2 ; g = 2 ; c = 2 ; h = 2 ; d = 4 ; i = 5 ; e = 3 ; j = 7

Explanation: Some rules to follow while calculating sig figs is

1. If a number like 4500 is present, only two sig figs are counted, but none of the zeros are, but if 4500. has a decimal point present, then you should count all the numbers available.

2. If a number like .0005 is present, only count 5 as a sig fig, however if the number is .00050, count the 0 after the 5 in this example (this would then have two sig figs.

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Which unit conversion allows you to convert 21.0 gallons into milliliters?
Ulleksa [173]

Answer:

Explanation:

we are given

there are in 0.073 gallons

we can see that there are two non-zero places after decimals

so, there are two siginificant figures

step-1: Change gallons to quarts

we know that

1 gallon = 4 quarts

so, we can write as

step-2: Change into liter

we know that

1 liter = 1.057 quarts

or

step-3: Change into millilitre

we know that

Since, it is asking for only two significant figures

so, we can also write as

...................Answer

3 0
3 years ago
A gas generation tube contains both the reactants involved in a chemical reaction and the gases that are produced.
Lady bird [3.3K]

The reaction will come to an end if all the reactants are used up. The reaction's limiting reactant is reactant B.

Limiting Reactant: The limiting reactant is the one that is consumed first and sets a limit on the quantity of product(s) that can be obtained.

This reactant is the one that restricts the production of products throughout the reaction. The reaction will come to an end if all of the reactants are used up.

surplus reactant

This is the limiting reactant that is present in excess and reacts with it all. Oxygen in the surroundings, as an illustration.

When all of the reactant B has been utilized, the reaction ends.

Learn more about limiting reactants here brainly.com/question/6751172

#SPJ4.

5 0
1 year ago
What is the density of a substance that has a mass of 42.8 g and a volume of 2.0 cm^3?
Misha Larkins [42]

Answer:

21.4

Explanation:

Mass = M/V

42.8/2.0 = 21.4

:)

7 0
2 years ago
You may experiment alone if you apply which of the following safety precautions?
ankoles [38]
A and b are both safety protocols, but C says to follow all saftey protocols. your answer is C
4 0
3 years ago
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Question: How does the cylinder's initial height affect its gravitational potential energy?
Vilka [71]
Mass will increase drastically the GPE since mass since mass is a variable in the formula GPE= mgh. 2.
6 0
3 years ago
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