fourth period
The third period is similar to the second, except the 3s and 3p sublevels are being filled. Because the 3d sublevel does not fill until after the 4s sublevel, the fourth period contains 18 elements, due to the 10 additional electrons that can be accommodated by the 3d orbitals.
Answer: Mass of produced in this reaction was 6.56 grams
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Mass or reactants = Mass of + mass of = 16.00 + 64.80 = 80.80 g
Mass of products = mass of aqueous solution + mass of + = 74.24 + x g
Mass or reactants = Mass of products
80.80 g = 74.24 + x g
x = 6.56 g
Thus mass of produced in this reaction was 6.56 grams
Answer:
Explanation: the molar mass of the whole compound is 223.35u
now make ratios for each of the elements and multiply by 100%
copper= 63.55/223.35 x 100 % comp of copper is 28.45%
bromine= (79.9x2)/223.35 x 100 %comp of bromine is 71.54%
multiply bromines molar mass by 2 when calculating
Answer:
atomic mass of sulfur is 32.06 g/mol
Explanation:
or is the conversion factor used to convert mole to particle.
<u>Explanation:</u>
The Avogadro's number named after the scientist "Amedeo Avogadrothe" and represented as <em>N</em> or <em>N </em>0. It is the number of constituent particles like atoms, molecules or ions which are present in one mole of salt or compound.
It is the dimensionless and international unit of amount of substance given as . The number of particles like atoms, molecules or formula units can be converted to moles by dividing the given particle value by Avogadro's number. . For example, if u want to convert molecules of into moles, then have to do as below,
The value of the Avogadro constant has been selected for all experimental purpose so that the mass of 1 mole of a chemical compound (in grams) is numerically equal to the average mass of one molecule of the compound.