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ivolga24 [154]
3 years ago
8

Why might a scientist repeat an experiment if he/she did not make a mistake in the first one? An experiment should be

Chemistry
2 answers:
PtichkaEL [24]3 years ago
8 0
C) Ensure the results are correct
Viktor [21]3 years ago
3 0

Answer:

c) ensure the results are accurate

Explanation:

you don't really know they're accurate unless you get them 2+ times

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An atom has9 electrons and 9 protons at the start. If it loses 2 electrons, what would the net charge on the atom be
nevsk [136]

Answer:

i hope it will help you

Explanation:

there will be 7 electrons and 9 protons will have 2+ charge.

3 0
3 years ago
Amanda found two snakes slithering in her garden. The first snake way only a baby,and was just 3/4 of an inch long. The second s
iren [92.7K]
To solve this problem you would add 3/4 to 7 1/3. 
3    22
4     3

9         88
12        12

97
12

8 1/12
The final answer would be 8 and 1/12

7 0
3 years ago
Other oils, such as car oil and vegetable oil, also consist largely of bonded carbon and hydrogen atoms. Would you predict that
grigory [225]

Answer:

Car oil and vegetable oil will mix well with gasoline

Car oil and vegetable oil will not mix with water.

Explanation:

Car oil and vegetable oil will mix well with gasoline

Car oil and vegetable oil will not mix with water.

This is because of the rule of solubility. According to this rule, like substances will only dissolve like substances. In essence, a polar compound will only dissolve another polar compound. A non-polar compound will dissolve only in a non-polar solvent.

Water is polar and oil is non-polar. The cannot mix.

Gasoline is non-polar and will dissolve oil which is also non-polar .

7 0
3 years ago
Methane versus carbon dioxide are very important greenhouse gases. However, methane can retain and release about ____ times more
elixir [45]

The blank space in the task statement should be filled with 25 as methane can retain 25 times more heat than carbon dioxide.

<h3>Heat Retention: Methane and Carbon dioxide</h3>

Methane, carbon dioxide amongst other gases are important greenhouse gases which allows the Earth retain it's heat in order for it to be habitable.

Methane can retain and release about 25 times more heat than Carbon Dioxide although Methane emissions are lower compared to Carbon Dioxide.

Read more on Greenhouse Gases:

brainly.com/question/1878123

4 0
2 years ago
Balance the following reaction. CH4+O2==&gt;CO2+H20
Radda [10]
CH4 + 2O2 --> CO2 + 2H2O
5 0
3 years ago
Read 2 more answers
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