Cu(NO3)2>NO2+CuO+O2 balanced: 2Cu(NO3)2=4NO2+2CuO+O2
Answer:
CaS calcium sulfide
Explanation:
hydroxides are insoluble except with group 1 like the lithium,
sulfides are insoluble in water and with calcium either
so CaS is insoluble
1:electron pair geometry->trigonal pyramid
2: molecular pair geometry->linear
The compound contains:
Nitrogen = 13.360%
Hydrogen = 3.8455%
Boron = 10.312%
This implies that for every 100 g of the substance:
Mass of nitrogen = 13.360 g
Mass of hydrogen = 3.8455 g
Mass of Boron = 10.312 g
Atomic mass of N = 14 g/mol
Atomic mass of H = 1 g/mol
Atomic mass of B = 11 g/mol
# moles of N = 13.360/14 = 0.9543
# moles of H = 3.8455/1 = 3.8455
# moles of B = 10.312/11 = 0.9375
Divide by the smallest # moles:
N = 0.9543/0.9375 = 1.02
H = 3.8455/0.9375 = 4.10
B = 0.9375/0.9375 = 1
Empirical formula = NH4B
