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andriy [413]
2 years ago
6

Rick runs 100 feet in 20 seconds what’s his speed?

Chemistry
2 answers:
Ksivusya [100]2 years ago
5 0

Answer:

5 feet per second

Explanation:

s=d÷t

100÷20=5

Free_Kalibri [48]2 years ago
5 0
Answer:
5 ft/s

explanation:
speed = distance/time
speed = 100/20
speed = 5ft/s
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This chemical equation is balanced.
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A

Explanation:

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Cl2+2KI→2KCl + I2 is an example of which type of reaction?
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single replacement

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Consider the car driving around a circular track .Once stated,the driver maintains a speed 0f 45m/h.Compare the driver's velocit
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3 years ago
Explain what is meant by the phrase 'the heat death of the universe."
Vikki [24]

Answer:

See explanation.

Explanation:

Are you literally posting your entire you chemistry homework on this site, one question at a time? Anyways, the heat death refers to the second law of thermodynamics and entropy. Heat is constantly flowing from warmer to cooler objects and never the other way around. This heat flow increases entropy, which is constantly increasing. The universe will eventually disperse all of its heat energy away to continuously increase entropy and reach a limit as the temperature reaches 0 K at which point all molecular motion will cease and so will the life of the universe.

6 0
2 years ago
Read 2 more answers
BRAINLIESTTTT ASAP!!! PLEASE HELP ME :)
melomori [17]

Answer:

Double replacement

Precipitation reaction

Explanation:

You have the reaction:

         REACTANTS                          PRODUCTS

BaCl₂ (aq) + Na₂SO₄ (aq) ⇒ 2NaCl (aq) + BaSO₄(s)

The general form of a double replacement reaction is the following:

AB + CD ⇒ CD + AB

The reactants basically, exchanged partners. In the case of your problem, Barium(Ba) and Sodium(Na) switched places. So this makes it a double-replacement reaction.

Now how do I know it is a precipitation reaction. A precipitation reaction occurs when two solutions combine and salt is formed. Salt is solid, so how do I know that's what occured? Look at your equation again:

BaCl₂ (aq) + Na₂SO₄ (aq) ⇒ 2NaCl (aq) + BaSO₄(s)

aq means aqueous (liquid)

s means solid

If you look at the product formed in the reaction, from two solutions, it formed a solid. So this is your clue as to why it is a precipitation reaction.

3 0
3 years ago
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