Answer is: t<span>he empirical formula of cuprite is Cu</span>₂O.<span>
If we use 100 grams of cuprite:
m(Cu) = </span>ω(Cu) · m(cuprite).
ω(Cu) = 88.8% ÷ 100% = 0.888.
m(Cu) = 0.888 · 100 g.
m(Cu) = 88.8 g.
n(Cu) = m(Cu) ÷ M(Cu).
n(Cu) = 88.8 g ÷ 63.55 g/mol.
n(Cu) = 1.4 mol.
m(O) = 0.112 · 100 g.
m(O) = 11.2 g.
n(O) = 11.2 g ÷ 16 g/mol.
n(O) = 0.7 mol.
n(Cu) : n(O) = 1.4 mol : 0.7 mol /0.7.
n(Cu) : n(O) = 2 : 1.
Answer: There are molecules gas are in 756.2 L.
Explanation:
It is known that 1 mole of any gas equals 22.4 L at STP. Hence, number of moles present in 756.2 L are calculated as follows.
According to mole concept, 1 mole of every substance contains molecules.
Therefore, molecules of S present in 33.76 moles are calculated as follows.
Thus, we can conclude that there are molecules gas are in 756.2 L.
Yes, a mixture could be made up of only elements and no compounds, given that the elements never undergo a chemical interaction and stay only in physical contact with each other.
Answer: let me see I gotta do the work first then I’ll give you the answers
Explanation:
the balanced equation for formation of potassium oxide is as follows
4K + O₂ --> 2K₂O
molar ratio of K to K₂O is 4:2
when 4 mol of potassium reacts, 2 mol of potassium oxide is formed
when 4 mol of K reacts - 2 mol of K₂O
when 1.52 mol of K reacts - 2/4 x 1.52 = 0.76 mol of K₂O
0.76 mol of K₂O is formed