<h3>
Answer:</h3>
231.31 g
<h3>
Explanation:</h3>
<u>We are given;</u>
- The mass of CuO produced as 3.64 moles
- The equation fro the reaction as
2Cu+O2 → 2CuO
We are required to determine the mass of copper that would react.
- In this case, we are going to use the concept on mole ratio.
- From the balanced equation,
2 moles of Cu reacts with 1 mole of oxygen to yield 2 moles of CuO
- Therefore, the mole ratio of copper (Cu) to CuO is 2: 2 or 1 : 1 (simplified)
- Therefore;
Moles of Cu = moles of CuO
Thus, moles of Cu = 3.64 moles
But, Mass = Number of moles × atomic mass
Atomic mass of copper = 63.546
Thus,
Mass of Cu = 3.64 moles × 63.546 g/mol
= 231.31 g
Thus, 231.31 g of copper will react to produce 3.64 moles of CuO
Answer:
The non metals form anions…
Explaination: Generally non-metals have 4 to 7 electrons in their outermost or valence shell.(Exception Carbon, silicon, etc. they have 4 electrons). Hence to achieve their octet (to have 8 electrons in their valence shell) they accept 1,2 or 3 electrons from other elements accordingly, thereby having -1, -2 or -3 charge on them (turning from neutral atoms to charged anions).
Extra info: non metals react with metals by forming anions and form ionic molecule generally but when non metals react with other non metals they form covalent molecule due to ‘sharing’ of electrons.
Hope it helps
Answer:
Its D :)
<em>Or not i haven't done this in a while-</em>
Answer:
Element Symbol Mass percent
Magnesium. Mg. 20.192%
Oxygen. O. 53.168%
Sulfur. S. 26.639%
Explanation:
hope this helps u out
Answer:
C₅H₈O₂
Explanation:
methyl methacrylate = 100 amu
6.91g CO₂ = 0.157 moles
2.26g H₂O = 0.125 moles
0.157 ÷ 0.125 = 1.256
{(CO₂)₁.₂₅₆ + (H₂O)₁} × 4 = (CO₂)₅ + (H₂O)₄
C₅H₈O?
C₅ = 60.05 amu H₈ = 8.064 amu
60.05 + 8.064 = 68.114 amu
100 amu - 68.114 amu = 31.886 amu
O = 16 amu
O = 2