Question

How many grams of beryllium are needed to produce 26.0 g of hydrogen? (Assume an excess of water.) Be(s) +2H2O(l) → Be(OH)2(aq) + H2(g)

Answer 1

@aaronq can you help me?

Answer 2

@HazelLuv99 perhaps you can help me?
I do give metals.

Answer 3

because you have the mass for hydrogen, use the formula
#moles=mass/molar mass for hydrogen
and then from the equation, determine the mole ratio between hydrogen and beryllium
once you have the mole ratio, you can find the #moles for beryllium
then use the #moles=mass/molar mass for beryllium
from that you can work out the mass of beryllium

Answer 4

can you maybe explain the #moles=mass/ molar mass thing to me?

Answer 5

the equation in short form is n=m/M
Mole is defined as the mass of substance containing the same number of fundamental units as there are atoms in carbon-12. Fundamental units can be atoms, molecules or formula units.
Mass is the weight of the substance
Molar mass is the number that you find in the periodic table