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Dominik [7]
3 years ago
9

Calculate the mass of one atom of helium.​

Chemistry
1 answer:
mixer [17]3 years ago
8 0

Answer:

One atom lf helium has a mass of 4 u

Know that 1 u =1.66. 10-24g

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at what height is an object that has a mass of 16kg, if it’s gravitational potential energy is 7500J?
dolphi86 [110]

Answer:

46.875

Explanation:

P.E=MGH

7500=16*10*h

7500=160h

h=7500/160

h=46.875

5 0
3 years ago
Which product is typically made using softwood?
deff fn [24]

Answer:c

Explanation:

softwood is used in doors roofs and so on

5 0
3 years ago
Read 2 more answers
What is the symbol of a ion with a 22 protons, 34 neutrons, and 18 electrons
Dominik [7]
Well knowing the number of protons, you can find what the element is, which is Ti = titanium. Then to find the charge, simply subtract 22 and 18 which is +3.

Find the mass number by adding 22 and 34 = 56.

56. +3
Ti

22

This would be the correct notation in isotopic form.
3 0
3 years ago
The volume of a gas with an initial pressure of 380 mmHg increases from 5.0 L to 8.0 L. What is the final pressure of the gas, i
Phoenix [80]
It’s C. 0.31 atm

I hope this helped out! Have a nice day :)
6 0
3 years ago
What is the unit for volume?
kondaur [170]

The answer is volume because The base units of length and volume are linked in the metric system. By definition, a liter is equal to the volume of a cube exactly 10 cm tall, 10 cm long, and 10 cm wide. Because the volume of this cube is 1000 cubic centimeters and a liter contains 1000 milliliters, 1 milliliter is equivalent to 1 cubic centimeter.

Hope this helps :)

5 0
3 years ago
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