Answer: fluted filter paper has more surface area suitable for collecting solid
Explanation:
Answer:
An element is a substance that cannot be split out into simpler substance by chemical means
A compound i is a substance consisting atoms of 2 or more different elements and these atoms are chemically joined together
Explanation:
Answer:
Explanation:
Look at the reaction.
2NH3 ===> N2 + 3H2
It's a molecule that is breaking down to two elements on the periodic table. We used to call such a thing as a simple decomposition.
Answer is: volume of helium is 244.72 liters.
m(He) = 43.7 g.
n(He) = m(He) ÷ M(He).
n(He) = 43.7 g ÷ 4 g/mol.
n(He) = 10.925 mol.
V(He) = n(He) · n(He).
V(He) = 10.925 mol · 22.4 L/mol.
V(He) = 244.72 L.
Vm - molar volume at STP.
n - amount of substance.
