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pshichka [43]
3 years ago
11

How does concentration affect reaction rate

Chemistry
2 answers:
8090 [49]3 years ago
8 0

Answer:

increases reaction

Explanation:

the concentration of reactants generally increases the rate of reaction because more of the reacting molecules or ions are present to form the reaction products.

Scorpion4ik [409]3 years ago
4 0

Answer:

A higher concentration of a catalyst will speed up the reaction rate.

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When you apply 1000 joules of energy to 50 grams of water its temperature changes to 30 degrees . What was the initial temperatu
expeople1 [14]

Answer:

25.2°C

Explanation:

Given parameters:

Energy applied to the water  = 1000J

Mass of water  = 50g

Final temperature  = 30°C

Unknown:

Initial temperature  = ?

Solution:

To solve this problem, we use the expression below:

            H  = m c Ф

H is the energy absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

     1000  = 50 x 4.184 x (30  -  initial temperature )

     1000  = 209.2(30 - initial temperature)

      4.78  = 30 - initial temperature

      4.78  - 30  = - initial temperature

         Initial temperature  = 25.2°C

7 0
3 years ago
Which gas variable has to do with the amount of collisions of gas particles has?
Firlakuza [10]
The answer is temperature
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Explain why an indicator is used in titration
stellarik [79]

Answer:

Titrations. Because a noticeable pH change occurs near the equivalence point of acid-base titrations, an indicator can be used to signal the end of a titration. When selecting an indicator for acid-base titrations, choose an indicator whose pH range falls within the pH change of the reaction.

Hope it helped!!

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3 years ago
Why would scientists change their ideas? *<br> Need help
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Answer:

If another scientist give better reasons;if they tested their hypothesis and it was wrong; if someone proved whatever the idea was to be wrong

Explanation:

I mean the list can go on at this point

6 0
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When molecules are joined I an ordered structure​
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Answer:

ice

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