Answer: -
1595 g
Explanation: -
Heat of vaporization = 2.4 Kj/ g
Mass of water to be vaporized = 50 g
Heat released = Mass of water to be vaporized x Heat of vaporization
= 50 g x 2.4 KJ /g
= 120 KJ
= 120000 J
Initial temperature= 33+273= 306 K
Final temperature =15+273=288 K
Change in temperature required = T = 306 - 288 = 18 K
specific heat of water is 4.18 J / g K
Mass of water that can be cooled = Total heat / (specific heat of water x Change in temperature)
= 120000 J / ( 4.18 J / g K x 18 K)
= 1595 g
True, scientists do make observations very carefully.
Answer:
Above the Curie temperature, a magnet permanently loses all or some of its magnetism. External magnetic fields: Strong, opposing magnetic fields can cause the magnetic domains to lose their orientation and relax into a lower state of energy where they are not aligned.
Explanation:
Answer:
A decrease in the total volume of the reaction vessel (T constant)
Explanation:
- Le Châtelier's principle predicts that the moles of H2 in the reaction container will increase with a decrease in the total volume of the reaction vessel.
- <em><u>According to the Le Chatelier's principle, when a chnage is a applied to a system at equilibrium, then the equilibrium will shift in a way that counteracts the effect causing it.</u></em>
- In this case, a decrease in volume means there is an increase in pressure, therefore the equilibrium will shift towards the side with the fewer number of moles of gas.
C₆H₁₂O₆, or glucose, is oxidized in the presence of oxygen to form carbon dioxide and water. The reaction equation for this is:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
Therefore, if 6 moles of oxygen are consumed, we can see from the equation that one mole of C₆H₁₂O₆ will be consumed.
