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Anestetic [448]
2 years ago
8

In the system model, the direction of the arrow tells you that

Chemistry
2 answers:
nadya68 [22]2 years ago
6 0
Answer: option b




Step by step Explanation:
AlladinOne [14]2 years ago
4 0

Answer: Answer b

Explanation:

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How much heat is required to raise the temperature of 670g of water from 25.7"C to 66,0°C? The specific heat
inna [77]

Answer:

Explanation:

q= mc theta

where,

Q = heat gained

m = mass of the substance = 670g

c = heat capacity of water= 4.1 J/g°C    

theta =Change in temperature=( 66-25.7)

Now put all the given values in the above formula, we get the amount of heat needed.

q= mctheta

q=670*4.1*(66-25.7)

  =670*4.1*40.3

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Write the complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2). You do not need to make t
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For the answer to the question above, asking to w<span>rite the complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2)and You do not need to make the subscripts smaller.
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I hope this helps.
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3 years ago
What do hydroelectric plants use to turn a turbine when producing electrical energy?
oksian1 [2.3K]
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3 years ago
Does this sound good so far
bogdanovich [222]
I think it looks good but some grammars are wrong i suggest trying to put it on grammarly and just check it out its just my suggestion and not doing this for points so you can delete this if it doesnt help
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Answer: option B. Poles

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