Yes it is a exothermic reaction.
Answer:
CuSO4
Explanation:
Na2S + CuSO4 → Na2SO4 + CuS
The reaction is balanced (same number of elements in each side)
To determine limiting reagent you need to know the moles you have of each.
Molar mass Na2S = 23 * 2 + 32 = 78
Molar mass CuSO4 = 63.5 + 32 + 16 * 4 = 159.5
Na2S mole = 15.5 / 78 = 0.2
CuSO4 mole = 12.1/159.5 = 0.076
*Remember mole = mass / MM
With that information now you have to divide each moles by its respective stoichiometric coefficient
Na2S stoichiometric coefficient : 1
Na2S : 0.2 / 1 = 0.2
CuSO4 stoichiometric coefficient: 1
CuSO4: 0.076 / 1 = 0.076
The smaller number between them its the limiting reagent, CuSO4
Answer:
When i cat climbs a tree it is using energy that was stored away. When you eat you are storing that energy in the food. when you cimb a tree you are burning calorius from that meal.
Answer:
Fossil fuels
Explanation:
Fossil fuels — natural gas, coal, and petroleum, and — provide most (63 %) of the energy consumed in the United States
The breakdown in 2019 was
Natural gas 38 %
Coal 24 %
Petroleum 1 %
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