Answer:
ice: 2,100 J/(kg·K)
water: 4,200 J/(kg·K)
water vapor: 2,000 J/(kg·K)
basalt: 840 J/(kg·K)
granite: 790 J/(kg·K)
aluminum: 890 J/(kg·K)
iron: 450 J/(kg·K)
copper: 380 J/(kg·K)
lead: 130 J/(kg·K)
Explanation:
Specific heat is the amount of thermal energy you need to supply to a sample weighing 1 kg to increase its temperature by 1 K.
Answer:
0.86
Explanation:
1mol of Zn has mass of 65.39g.The amount of Zn is 2.5g65.39g/mol=0.038mol.
The amount of H2 produced is the same as the amount of Zn consumed (0.038mol).
1mol of ideal gas will occupy 22.4L at STP.
The H2 will occupy 0.038mol×22.4L/mol=0.86L
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Answer: The answer to the first one is the second option and the answer for the second one is the first option.
Explanation:
Answer:
The 20th century saw huge advances in our understanding and use of the nucleus. For instance, in 1939 scientists Otto Hahn, Lise Meitner and Otto Frisch discovered nuclear fission – a process by which radioactive materials release energy when they are induced to split.
Realising the huge amount of energy that such a reaction produces, scientists were tasked with developing this new knowledge initially for harm in nuclear weapons. Just six years after fission’s discovery, it was harnessed in the atom bombs that destroyed the Japanese cities Hiroshima and Nagasaki, and controversially ended the Second World War. Later, much more powerful hydrogen bombs were developed that combined fission with the process powering the Sun – fusion.
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Answer:
Wereare they answer choices
Explanation:
