Answer:
20 Neutrons
Explanation:
The element of potassium has the symbol K. The nucleus of an atom of potassium contains 19 protons and 20 neutrons. I hope that answer helps xx
Answer:
Lose energy
Explanation:
The molecules are moving from a liquid (molecules slide past one another) to a solid (molecules barely move) so are losing energy
H2O+Fe⇒Fe2O3+H2
When it is balanced it would be:
3H2O+2Fe⇒Fe2O3+3H2
When balancing equations, you have to make sure that all elements are equal on each side.
Answer:
The answer to your question is V2 = 29.9 ml
Explanation:
Data
Volume 1 = V1 = 35 ml
Pressure 1 = P1 = 1 atm
Temperature 1 = T1 = 150°C
Volume 2 = V2 = ? ml
Pressure 2 = P2 = 2 atm
Temperature 2 = T2 = 450 °C
Process
1.- Convert temperature to °K
Temperature 1 = 150 + 273 = 423°K
Temperature 2 = 450 + 273 = 723°K
2.- Use the Combined gas law to find the volume
P1V1/T1 = P2V2/T2
-Solve for V2
V2 = P1V1T2 / T1P2
-Substitution
V2 = (1 x 35 x 723) / (423 x 2)
-Simplification
V2 = 25305 / 846
-Result
V2 = 29.9 ml
