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horrorfan [7]
2 years ago
10

PLEASE HELP!!

Chemistry
1 answer:
just olya [345]2 years ago
5 0

Answer:

Ecosystem services are indispensable to the wellbeing of all people, everywhere in the world. They include provisioning, regulating, and cultural services that directly affect people, and supporting services needed to maintain the other services.

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After an experiment, scientists write a Conclusion which summarizes their experiment and results.
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2 years ago
The density is 5.4 g/mL and the volume is 12.9 mL.
marishachu [46]

Answer:

69.66 g

Explanation:

We have the following from the question;

Density of the substance = 5.4 g/ml

Volume of substance = 12.9 ml

Mass of substance= the unknown

Since we have both density and volume of the substance, the question must be for us to obtain the mass of the substance, hence;

Density= mass/volume

Mass= Density × volume

Mass = 5.4 g/ml × 12.9 ml

Mass= 69.66 g

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3 years ago
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Semmy [17]

Answer:

a. friction

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