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nika2105 [10]
3 years ago
13

One example of a chemical change is

Chemistry
2 answers:
ikadub [295]3 years ago
8 0
Baking cookies is a chemical change
ser-zykov [4K]3 years ago
6 0

Answer:

When you burn a paper or cooking food

Explanation:

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How many electrons does the copper atom lose in the process: Cu → Cu3+ + ? electrons
alexdok [17]

Answer:

3

Explanation:

6 0
3 years ago
What is the concentration, in mass percent (m/m), of a solution prepared from 50.0 g nacl and 150.0 g of water?
Nataly [62]
Mass of solute ( m1 ) = 50.0 g

mass of solvent ( m2 ) = 150.0 g

Therefore:

m/m = ( m1 / m1 + m2 )

m/m = ( 50.0 / 50.0 + 150.0 )

m/m = ( 50.0 / 200 )

m/m = 0.25
8 0
3 years ago
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What is the relative rate of diffusion of hydrogen and nitrogen ​
vredina [299]

Answer:

2.645

Explanation:

Rate of diffusion formula:

Sqrt(mass2/mass1)

>>sqrt(14/2)

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3 0
2 years ago
Hi guys, my question is:
guapka [62]

Answer:

See Explanation Below

Explanation:

A) The rate law can only be on the reactant side and you can only determine it after you get the net ionic equation because of spectators cancelling out. So in this case the rate law is k=[CH3Br]^1 [OH-]^1. The powers are there because the rxn is first order.  

B) Since the rxn is first order anything you do to it will be the exact same "counter rxn" per say so since you are decreasing the OH- by 5 the rate will decease by 5

C) The rate will increase by 4 since you are doubling both you have to multiply them both.

8 0
3 years ago
Who is alexander hamilton?
Anna71 [15]

Answer:

He was an American statesman, politician, legal scholar. military commander, lawyer, banker and economist.

7 0
2 years ago
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