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kumpel [21]
2 years ago
8

Find How many joules of heat energy are needed to raise the temperature of 10grams of Aluminum from 20*C to 40*C. If the specifi

c heat of Aluminum is 0.90 J/g*C.
Q = McvT.. Hintthe change in temperature before you solve!
Q = (10).(0.90).(40*C-20*C)
Chemistry
1 answer:
dmitriy555 [2]2 years ago
3 0

Explanation:

the answer and the working out is shown above, hope it helps.

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The atria beat prior to the ventricles. What purpose does this serve?
Zarrin [17]

Answer:

The atria and ventricles work together, alternately contracting and relaxing to pump blood through your heart. The electrical system of your heart is the power source that makes this possible.

Your heartbeat is triggered by electrical impulses that travel down a special pathway through your heart:

Explanation:

Hope this helps

4 0
2 years ago
The naturally occurring isotopes of magnesium are magnesium-24. magnesium-25, and magnesium-26. Magnesium-24 has an abundance of
RoseWind [281]
69.420 would be your answer

5 0
2 years ago
Read 2 more answers
I need some help with with question:
defon

Answer:

C1V1=C2V2

C1 is 2.0mol/l

V1=?

C2=.4mol/L

V2=100ml or for this 0.1L

V1 is 20ml

Best way to prepare this is to measure out 20ml of the 2 molar solution and add 80mL to it to get to 100mL

Explanation:

8 0
2 years ago
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring
Ray Of Light [21]

Just see the picture. Hope it helped u :)

3 0
3 years ago
Draw a mechanism for the reaction of methylamine with 2-methylpropanoic acid. Draw any necessary curved arrows. Show the product
Nitella [24]

Answer:

See figure 1

Explanation:

On this case we have a <u>base</u> (methylamine) and an <u>acid</u> (2-methyl propanoic acid). When we have an acid and a base an <u>acid-base reaction </u>will take place, on this specific case we will produce an <u>ammonium carboxylate salt.</u>

Now the question is: <u>¿These compounds can react by a nucleophile acyl substitution reaction?</u> in other words <u>¿These compounds can produce an amide? </u>

Due to the nature of the compounds (base and acid), <u>the nucleophile</u> (methylamine) <u>doesn't have the ability to attack the carbon</u> of the carbonyl group due to his basicity. The methylamine will react with the acid-<u>producing a positive charge</u> on the nitrogen and with this charge, the methylamine <u>loses all his nucleophilicity.</u>

I hope it helps!

5 0
3 years ago
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