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erastovalidia [21]
3 years ago
6

Which of these is an indicator that a chemical reaction has occurred?

Chemistry
1 answer:
earnstyle [38]3 years ago
7 0
One of the common indicators that a chemical reaction has occurred is if the react ants reacting produce a precipitate that is insoluble within the solution and forms.
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CH4(g)+O2(g)→CO2(g)+H2O(g). What mass of water is produced from the complete combustion of 5.00×10−3 g of methane?
bixtya [17]

Answer:

1gram of water

Explanation:

First balance the equation

Ch4+2O2>CO2+2H2O

Ratio is 1:2

500×10-3what about 2?

500×10-3×2=1g

1g of water

4 0
3 years ago
Which of the following solutions would have the lowest freezing point? 1.0 nacl 3.0 nacl 2.0 nacl or 5.0 nacl
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The solution that will have the lowest freezing point is 5.0 SODIUM CHLORIDE. 
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3 years ago
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What is the mass of 7.50 moles of magnesium chloride, mgcl2?
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8 0
3 years ago
Rick has taken a loan of $3,200 from the bank to buy new appliances. His first loan payment is due at the end of this month. He
marysya [2.9K]

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140

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<span>The solution to the problem is as follows:

125/58.69 = 2.12 mol 
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Therefore, there are 2.12 moles of <span>nickel (Ni) atoms are in 125 g Ni.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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