Atomic mass Sodium ( Na ) = 22.98 u.m.a
22.98 g ----------------- 6.02x10²³ atoms
175 g ------------------- ?? atoms
175 x ( 6.02x10²³) / 22.98 =
4.58x10²⁴ atoms of Na
hope this helps!
The compound with a chemical formula of C₃H₈ is propane. The subscripts actually represent the number of the individual atoms in 1 particle of the compound. Since there are the same number of atoms per mole of any substance, the subscript can also represent the moles. Through stoichiometric calculations, the solution is as follows:
Moles of Carbon = 11.2 moles H * 3 mol C/8 mol H = <em>4.2 moles</em>
Answer:
The atomic mass or atomic weight
Explanation:
Answer:
A. Ionic—Magnesium will give 2 electrons to oxygen, and both will become ions.
Explanation:
An ionic bond will form between the ions of both atoms. Ionic bonds forms when there is transfer of electrons between two atoms so as to achieve a noble configuration.
In the given problem, magnesium is a metal and highly electropositive. This implies that it will readily donate its valence electrons. Oxygen on the other hand is highly electronegative, to complete its outer shell configuration, it requires just two more electrons.
The transfer of the two electrons to the oxygen atom sets up an electrostatic force of attraction between the two ions and an ionic bond results.
Answer:
9.52g of N2
Explanation:
The equation of the reaction is given as;
2NO(g) + 2H2(g) → N2(g) + 2H2O(l)
From the stochiometry of the reaction;
2 mol : 2 mol : 1 mol : 2 mol
60g : 4g : 28g :
(
Mass = Number of moles * Molar mass)
Converting the masses given to moles;
Number of moles of NO = mass / molar mass = 20.4 / 30 = 0.68
Number of moles of H2 = mass / molar mass = 5.10 / 2 = 2.55
In this reaction, the limiting reactant is NO
60g of NO produces 28g of N2,
20.4g of NO would produce xg of N2
60 = 28
20.4 = X
X = (20.4 * 28) / 60
X = 9.52g
