Answer:I dont know the answer but i need the points thx!!!!
Explanation:
Answer:
- There will be 1.23 moles of helium in the balloon at STP
Explanation:
1) <u>Initial conditions of the helium gas</u>:
- V = 20.0 liter
- p = 1.50 atm
- T = 25.0 °C = 25.0 + 273.15 K = 298.15 K
2) <u>Ideal gas equation</u>:
- pV = n RT
- p, V, and T are given above
- R is the Universal constant = 0.0821 atm-liter / ( K - mol)
- n is the unknown number of moles
3) <u>Solve for n</u>:
- n = 1.50 atm × 20.0 liter / (0.0821 atm-liter /k -mol ×298.15K)
4) <u>At STP:</u>
- STP stands for standard pressure and temperature.
- The amount (number of moles) of the gas will not change because the change of pressure and temperature, so the number of moles reamain the same: 1.23 mol.
Answer:
ummmmmmmmmm what's that???
Answer is: A. They opposed the use of energy released during nuclear fission for military purposes.
Hahn, Strassmann and Meitner were not engaged in nuclear weapons research during World War II.
Otto Hahn (1879 - 1968) became a passionate campaigner against the use of nuclear energy as a weapon.
Hahn and Strassmann discovered nuclear fission (nuclear fission of uranium in 1939).
KE = 1/2 * m * v^2
KE = 1/2 * 130 * 23^2
KE = 34385J
