Answer:
Q = 768.47 J
Explanation:
Given that,
Mass of the metal, m = 25 g
Initial temperature, T₁ = 21.0 ºC
Final temperature, T₂ = 80.0 ºC
The specific heat of the metal is 0.521 J/gºC.
We know that the heat released due to the change in temperature is given by :
Hence, 768.47 J of heat energy will be needed.
Answer:
Explanation: A foam forms when bubbles of a gas are trapped in a liquid or solid. In this case oxygen is generated when hydrogen peroxide breaks down into oxygen and water on contact with catalase, an enzyme found in liver. Enzymes are special protein molecules that speed up chemical reactions.
Answer:
Oxygen.
Explanation:
Hello,
Yeast fermentation in the food industry must be carried out under anaerobic conditions as long as when oxygen is present respiration occurs rather than fermentation.
Best regards.
2 moles of water are produced. Here, hydrogen is the limiting reagent. 1 mole of oxygen is used up with 2 moles of hydrogen to form 2 moles of water. 1 moles of oxygen remains.
Here's the solution,
we know,
<u>potential energy</u> = mgh
where,
- m = mass = 0.5 kg
- g = acc due to gravity = 9.8 m/s²
- h = height = 0.8 m (80 cm)
So,
=》
=》
