Chemistry, 29.01.2021 03:20 tylermorse3775
the mass of cobalt-60 in a sample is found to have decreased from 80 grams to 30 grams in a period of 10.5 years. Calculate the half-life for cobalt-60
Answers: 3
Chemistry, 22.06.2019 05:20
Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?
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A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?
Answers: 1
Chemistry, 23.06.2019 07:10
1) a light bulb takes in 30 of energy per second. it transfers 3j as use energy. calculate the efficiency. second. it transfers 3j as useful light energy and 27j as heat energy. calculate the efficiency
Answers: 1
the mass of cobalt-60 in a sample is found to have decreased from 80 grams to 30 grams in a period o...
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