The volume of 4.92 grams of hydrogen gas at STP is 55 L.
<u>Explanation</u>:
1 mole of an ideal gas will occupy 22.4 L
To find volume, the molar volume of a gas is
22.4 L / 1 mole H
2 → this takes you from moles of H
2 to liters
Now, to find the number of moles present in 4.92 g of hydrogen gas, you can use the gas' molar mass
4.92 g
1 mole H
2 / 2.016
g = 2.44 moles H
2
This sample of hydrogen gas will thus occupy
2.44 moles H
2
22.4 L / 1 mole H
2 = 54.6 L = 55 L.
An example for how the Paleozic
supercontinent ice cap melted is through plants dying off, which in turn, increased the greenhouse effect.
To add, <span>the
trapping of the sun's warmth in a planet's lower atmosphere due to the greater
transparency of the atmosphere to visible radiation from the sun than to
infrared radiation emitted from the planet's surface is called the greenhouse
effect.</span>
Well I think it’s B but I hope I’m not wrong
They are reproductive organs
The answer is D transition state. In the energy profile, the transition state is the highest point. For a reaction, the activation energy is the minimal energy needed to trigger a reaction. The reactants are the start of the reaction and the products are the end of the reaction.