Mole to Mole.
Assuming you're referring to converting in general, there must always be a mole to mole conversion.
Gram to gram would be incorrect as you must have a molar conversion in order to do so.
Gram to mole would be incorrect because that would leave out molecular conversions which would require three steps rather than two.
Mole to molecule is incorrect as it leaves out grams, depending on the circumstances and equation provided.
Thus, through process of elimination, mole to mole is the correct answer.
Hope this helps!
Fe2O is the formula for that
There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
Its atomic symbol is H and its atomic number is one. Hydrogen; Hydrogen, H, is a chemical element with atomic number 1. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H2.
Hydrogen is easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water.
Cookware manufacturers who make pans out of steel only because if C-8 is discontinued then people would have no choice but to buy steel pans. The steel pan manufacturers would in return receive a lot of money