Answer:
Diatomic molecules are molecules made of two atoms chemically bonded together. The atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules).
Explanation:
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
Answer:
88.5 % of the raw ore is CuSO4*4H2O
Explanation:
Step 1: Data given
Mass of the ore = 10.854 grams
Mass of water = 2.994 grams
Step 2: Calculate moles H2O
Moles H2O = mass H2O / molar mass H2O
Moles H2O = 2.994 grams / 18.02 g/mol
Moles H2O = 0.166 moles
Step 3: Calculate moles CuSO4*4H2O
For 1 mol CuSO4*4H2O we have 4 moles H2O
For 0.166 moles H2O we have 0.166/4 = 0.0415 moles CuSO4*4H2O
Step 4: Calculate mass CuSO4*4H2O
Mass CuSO4*4H2O = moles * molar mass
Mass CusO4*4H2O = 0.0415 moles * 231.67 g/mol
Mass CuSO4*4H2O = 9.61 grams
Step 5: Calculate mass % of CuSO4*4H2O
Mass % = (9.61 grams / 10.854 grams )*100 %
Mass % = 88.5 %
88.5 % of the raw ore is CuSO4*4H2O
To find the formulae, you must add as many of the ions together to get a neutral charge. For example, one Li^+ ion and one NO2^- ion give LiNO2, which is lithium nitrite, but since CO3^2- has a charge of -2, it needs 2 Li^+ ions to make the neutral compound Li2CO3, lithium carbonate. Similarly, Cu^2+ needs 2 NO2^- ions to make the neutral compound Cu(NO2)2, copper(II) nitrite. To name these, simply add together the names of the ions used. Li^+ is lithium, Cu^2+ is copper(II), and Ba^2+ is barium. The negatively charged ions are named as nitrite for NO2^-, carbonate for CO3^2-, bisulfate for HSO4^- and phosphate for PO4^3-.