3 years ago

Use the collision theory to discuss how temp., concentration and surface area affect the rate of a chemical reaction?

Chemistry

1 answer:

pogonyaev3 years ago

4 0

The collision theory explains how chemical reactions are made and different reactions have different reaction rates

Hope it helps.

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Name the parts of an electromagnet

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The iron core, copper wire, and an electricity source.

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A boy jumps into a cold swimming pool and his body temperature goes down. His muscles, blood vessels, and nervous system work to

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2 years ago

How many hydrogen atoms are in 35.0 grams of hydrogen gas? How many hydrogen atoms are in 35.0 grams of hydrogen gas? 4.25 × 102

Ede4ka [16]

Answer: $2.12\times 10^{25}$ atoms of hydrogen are there in

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Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

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$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{35.0g}{2g/mol}=17.5moles$

1 mole of hydrogen $(H_2)$ = $2\times 6.023\times 10^{23}=12.05\times 10^{23}$ atoms

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3 years ago

Most substances become less dense as the temperature increases. Which substance is an exception to this rule

stealth61 [152]

The substance is water

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3 years ago

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A student practicing for a cross country meet runs 250 m in 30s what is her average speed

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Answer:

Speed = 8.34 m/s

Explanation:

Given =

Distance = 250 meters

Time = 30 seconds

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Speed = Distance / Time

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Speed = 8.3333333 m/s.

Speed = 8.34 m/s

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3 years ago

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