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erik [133]
3 years ago
7

How many neutrons does element x have if it's atomic number is 27 and it's mass number is 74

Physics
1 answer:
Makovka662 [10]3 years ago
3 0

Atomic number=Proton count

Atomic mass=Proton count+ neutron count

Neuton Count=Atomic mass-Proton count

Proton count=Atomic number=27

Mass number=74

Neuton count= 74-27=47

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The volume of a gas at 59.0kPa is 600ml. if the pressure is increase to 138.0kPa, what will be the new volume?
likoan [24]

Answer:

<h3>The answer is 256.52 mL</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question we have

V_2 =  \frac{59000 \times 600}{138000}  =  \frac{35400000}{138000}  \\  = 256.521739...

We have the final answer as

<h3>256.52 mL</h3>

Hope this helps you

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P = W/t = 5600 / 10 = 560 W

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