Top left and bottom right are the atomic models of the same element
Answer:
The the empirical formula for magnesium chloride based on this experiment will be
Explanation:
Given that,
Mass of Mg = 0.50 g
Mass of magnesium chloride found = 1.99 g
Let the formula of magnesium chloride be
We know that,
Molar mass of Mg= 24 g/mol
Molar mass of magnesium chloride = (24x+35.5y) g/mol
We need to calculate the moles of Mg
Using formula of moles
Put the value into the formula
We need to calculate the mole of magnesium chloride
Using formula of moles
Put the value into the formula
The reaction will be,
We need to calculate the value of x and y
Using number of moles of Mg in reactant and product
Moles of Mg atom in reactant=Moles of Mg atom in product
Hence, The the empirical formula for magnesium chloride based on this experiment will be
Answer:
Atomic number is 8 and mass number is 17.
Explanation:
From the figure,
The number of protons= 8
The number of neutrons = 9
Any atom contains equal number of protons and electrons.Hence, the atomic number of element is 8.
The atomic number eight element in the periodic table is "Oxygen.
And mass number is 17.