D. amu
amu stands for atomic mass unit
The reaction between Na2S and CuSO4 will give us the balanced chemical reaction of,
Na2S + CUSO4 --> Na2SO4 + CuS
This means that for every 78g of Na2S, there needs to be 159.6 g of CuSO4. The ratio is equal to 0.4887 of Na2S: 1 of CuSO4. Thus, for every 12.1g of CuSO4, we need only 5.91 g of Na2S. Thus, there is an excess of 9.58 g of Na2S. The answer is letter C.
Answer:
The conditions for biochemical, chemical and both standard states are shown below
Explanation:
Chemical standard state:
Temperature is 25°
Intial concntration of reactants and products is 1M
g. Presurre is 1 atm.
PH7
Biochemical standard state:
Temperature is 25°
PH7
Constant value of Mg2+
Both:
Intial concntration of reactants and products is 1M
g. Presurre is 1 atm.
Temperature is 25°
PH7
No it’s a decomposition reaction
Explanation:
Hint- look where the arrow is
If there is 1 product with an arrow next to it, then it is a decomposition reaction
This shows a product decomposing (breaking down) into 2 elements, which is a decomposition reaction
