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3 years ago

What is the volume of a rock that has a mass of 50 grams and a density of 5 g/ml?

Chemistry

1 answer:

Brut [27]3 years ago

3 0

Explanation:

density = mass/ volume

so,

volume = mass/ density

volume = 50 g/ 5 g/ml³

volume = 10 ml³

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Which of the following steps in a star's life cycle takes the longest?

Vsevolod [243]

The correct anwser is "C.fusion of hydrogen atoms"

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3 years ago

Thermal energy changes states because

Artyom0805 [142]

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2 years ago

MARKING BRAINLEIST!!

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Answer:

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2 years ago

Read 2 more answers

Which reactions are oxidation-reduction reactions? check all that apply. fes(s) 2hcl(aq) â†’ h2s(g) fecl2(g) agno3(aq) nacl(aq)

Dafna1 [17]

oxidation-reduction reactions are -

2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)
Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

For reaction,

2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)

On reactant side:

Oxidation state of Carbon = +2

Oxidation state of Oxygen = 0

On product side:

Oxidation state of Carbon = +4

Oxidation state of Oxygen = -2

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is oxidizing and the oxygen's oxidation state is decreasing from 0 to -2. As a result, it is decreasing.

For reaction,

Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

When reacting:

Iron's oxidation state is +3.

Carbon's oxidation state is +2.

On product side:

Iron's oxidation state is zero.

Carbon's oxidation state is +4.

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is being oxidized and the iron's oxidation state is changing from +3 to 0. As a result, it is decreasing.

To learn more about oxidation-reduction from given link

brainly.com/question/5794822

#SPJ4

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1 year ago

What does chemical reaction describe

Flauer [41]

A chemical reaction (signs)

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a physical

- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color

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2 years ago