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sasho [114]
3 years ago
14

I’ll mark you brainley if you help me figure out which answer it is!!!

Chemistry
1 answer:
Stolb23 [73]3 years ago
5 0

Answer:

A

Explanation:

A chemical change happens when one chemical substance is transformed into one or more different things , such as when iron becomes rust so

B: Acids turn the indicator red, pink, orange, and yellow, while bases turn it green based on what it reactions with or comes in contact with  so b is maybe

c is wrong

and d a physical change, will technically yes and no there should have not been a smell afterwards so the only really choose that makes sense here is A  

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3 years ago
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A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?
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The answer would be C.  

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How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.
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3 years ago
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Look at the electron-dot diagram. What type of bond would two sulfur atoms require to form a molecule?
Blababa [14]

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4 0
2 years ago
Ammonia, nh3, for fertilizer is made by causing hydrogen and nitrogen to react at high temperature and pressure. How many moles
charle [14.2K]

Answer:

0.30molNH_3

Explanation:

Hello there!

In this case, since the reaction for the formation of ammonia is:

3H_2+N_2\rightarrow 2NH_3

We can evidence the 1:2 mole ratio of nitrogen gas to ammonia; therefore, the appropriate stoichiometric setup for the calculation of the moles of the latter turns out to be:

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0.30molNH_3

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