Answer:
0.21mol Ar (g)
Explanation:
To convert from litres to moles at STP we must divide the amount of litres by 22.4.
4.7 / 22.4 = 0.21mol Ar (g)
Answer:
The molar mass and molecular weight of Al(CH3CO2)3 is 204.1136.
Explanation:
Answer:
25
Explanation:
mass number = protons + neutrons
= 13 + 12 = 25
In a liquid, particles are close together but can move in any direction. They won't keep a definite shape like solids do.
There is alpha, beta, and gamma radiation. Gamma radiation can damage our tissue and DNA. Alpha and Beta can deflected but even gamma radiation can somewhat pass through concrete.