Chemistry, 20.11.2020 02:20 uglyturtle15
Phosphorus-32 has a half life of 2 weeks. After 4 weeks, how much of 100 grams of a
sample of phosphorus-32 remains undecayed?
Answer without units.
Answers: 3
Chemistry, 21.06.2019 23:20
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
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Chemistry, 23.06.2019 17:10
Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.
Answers: 1
Chemistry, 24.06.2019 03:00
Some life forms move so slowly that their movement can not be detected
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Chemistry, 24.06.2019 04:00
What happens to chemical bonds as a chemical reaction occurs? a. bonds in both the reactants and products are formed. b. bonds in the reactants are formed and bonds in the products are broken. c. bonds in both the reactants and products are broken. d. bonds in the reactants are broken and bonds in the products are formed.
Answers: 1
Phosphorus-32 has a half life of 2 weeks. After 4 weeks, how much of 100 grams of a
sample of phosp...
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