Answer:
Q = 44.5 kJ
Explanation:
Given that,
Mass of water, m = 112 g
Water at 50.0°C cools to form ice at −45.0°C
We need to find the total amount of heat released. The formula for heat released is given by :
c is the specific heat of water, c = 4.184 J/g°C
So,
or
Q = -44.5 kJ
So, 44.5 kJ of heat is released.
Answer:
The products have less potential energy than reactants.
Explanation:
For an exothermic reaction; the potential energy of the products is less than that of reactants.
Since, ΔH = Pot. energy of products - Pot. energy of reactants.
and it must be negative value.
The attached image shows also the potential energy diagram of an exothermic reaction.
So, the right choice is The products have less potential energy than reactants.
Answer:
Here, this may help you:
https://brainly.in/question/28298343
Explanation:
Here are some disadvantages, is that nitrogen dioxide is a toxic gas and it can still be harmful when ingested by human, also critics of hydrogen fuel cells argue that although these cells do not emit carbon after burning, they give out nitrogen dioxide and other emissions.
Hope this helps
Answer: 1. h oxidized, 2. g reduced, 3. e glucose, 4. c pyruvate, 5. b NAD+, 6. a NADH.
Explanation:
Glycolysis is also known as Embden-Meyerhof pathway, and in this process one mole of glucose is oxidised into two moles of pyruvate in a series of enzyme-catalyzed reaction and do not involve molecular oxygen i.e. oxygen indepenedent process. This process is studied in two phases preparatory (energy-investment) and pay-off phase(energy generation).
Net reaction: Glucose + 2NAD+ HPO4-2 = 2 Pyruvate + 2NADH + 2ATP + 2H2O.