Answer:
B?
Explanation:
In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.
Answer:
The five steps involved in the process of natural selection are
Variation • Inheritance • Selection • Time • Adaptation
☆anvipatel77☆
•Expert•
Brainly Community Contributor
Answer:

Explanation:
Hello!
In this case, it is possible to treat this problem by using a proportional factor which indicates one iron nail equals 2.0 grams:

Now, for an amount of 6.022x10²³ nails, the corresponding mass will be:

Best regards!