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mina [271]
4 years ago
12

Evidence of a chemical reaction includes all of the following EXCEPT: A. baking soda and vinegar release gas bubbles B. while ch

ewing a cookie, it becomes smaller pieces so you can swallow it C. heat is generated after mixing 2 chemicals
Chemistry
1 answer:
Bumek [7]4 years ago
3 0

Answer:

B.

Explanation:

Chemical reaction have to have either a temp change, formation of precipitate, formation of gas, or color change.

- Hope that helps! Please let me know if you need a further explanation.

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Please answers the question​
frozen [14]
That is correct hope that helps
8 0
3 years ago
Calculate the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L.
Aleonysh [2.5K]

Answer: 15.5^0C

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 0.987 atm

V = Volume of gas = 12 L

n = number of moles = 0.50

R = gas constant =0.0821Latm/Kmol

T =temperature =  ?

T=\frac{PV}{nR}

T=\frac{0.987atm\times 12L}{0.0820 L atm/K mol\times 0.50mol}=288.5K=(288.5-273)^0C=15.5^0C

Thus the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L is 15.5^0C

8 0
3 years ago
All invertebrates are part of the same phylum A) True B) False PLZZZ HELP
amm1812

hello, the answer to your question would be TRUE!

(this is because a phylum is "a principal taxonomic category that ranks above class and below kingdom.")

<em> i hope this helps, and have a great day. :)</em>

8 0
4 years ago
Read 2 more answers
if you wanted to study the science of describing, naming, and classifying organisms, what would you study??
crimeas [40]
I think it would be taxonomy which is the the classification of something. Mostly organisms. 
4 0
3 years ago
Answer this FAST PLEASE IT WILL HELP ALOT AND THEIR IS 15 POINTS AND ILL GIVE BRAINLIEST!!
amm1812

Answer:

C

Explanation:

As fertilizer can run off into the reservoir and contaminate it with harmful chemicals

8 0
3 years ago
Read 2 more answers
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