Answer:
2758 L of LiH and 849 L of MgH₂
Explanation:
To know the volume of the gas, we can use the ideal gas law:
PV =nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (62.36 torr*L/mol*K), and T is the temperature.
The mass is 1.95 lb = 884.52 g (1lb = 453.6 g).
T = 27ºC + 273 = 300 K
<em>For lithium hydride (LiH)</em>
The molar mass is: 7 g/mol of Li + 1 g/mol of H = 8g/mol
n = 884.52/8 = 110.565 mol
750*V = 110.565*62.36 *300
V = 2758 L of LiH
<em>From magnesium hydride (MgH₂)</em>
The molar mass is: 24 g/mol of Mg + 2* 1 g/mol of H = 26 g/mol
n = 884.52/26 = 34.02 mol
750*V = 34.02*62.36 *300
V = 849 L of MgH₂
Answer:
there is some difference
Explanation:
hydrogen ion --
symbol-H
Charge- 1+ or 1-
it is atom
hydroxide ion --
symbol- OH
charge-. -1
contains.- one oxygen atom and one hydrogen atom.
they are bonded.
it is a molecule
Answer:
B. O2 is reduced when it accepts electrons and forms water.
Explanation:
During cellular respiration water is formed when oxygen receives electrons and picks up protons at the conclusion of the electron transport chain. The electron transport chain will stop functioning if there isn't enough oxygen to receive electrons (for example, because a person isn't breathing in enough oxygen), and ATP will no longer be created by chemiosmosis. Cells can't carry out the reactions they need to function if they don't even have enough ATP, and they may perish after a long period of time.
Answer:
yes it is a chemical change
Explanation:
because first it was in liquid and turned into gas
Answer:
[He]2p6
Explanation:
Fluorine has an atomoc number of 9 which means 9 electrons with the electon configuration:[He]2p5,However,when it becomes Fluoride ion,it gains one electron to complete its outermost shell to obtain an octet configuration and becomes [He]2p6.
