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Digiron [165]
3 years ago
10

What is the first step that a scientist usually takes to solve a problem

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
4 0

Explanation:

these are the scientific method.

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Which is an example of a heterogeneous mixture? <br>A coffee<br>B soil<br>C gelatin<br>D air
mariarad [96]
Heterogeneous mixtures are made of different substances that remain physically seperate. An example would be mixing sand and sugar together.
the answer would be soil
The answer is B soil
6 0
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Ibuprofen is a common pain reliever and anti-inflammatory. Its formula is C13H18O2. What percent by mass of ibuprofen is the car
Anarel [89]

Answer:

Explanation:

%Carbon =  mass of carbon / mas of C13H18O2) X100%

             =      13X12/ (13X12+18+2X16)X100%

           =    156/206) X100%= 75.7%

8 0
3 years ago
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Sphinxa [80]

Answer: 0.24

Explanation:

M=\frac{moles}{L}\\ M=\frac{0.6 moles}{2.5L} \\M=0.24

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7 0
3 years ago
Adding hydrogen atoms to an unsaturated fatty acid will make it __________.
xxMikexx [17]

The answer is (a.) more solid

 

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