Chemistry, 27.08.2019 18:30, SupremeNerdx
Asample of phosphorus-32 has a half-life of 14.28 days. if 55 g of this radioisotope remain unchanged after approximately 57 days, what was the mass of the original sample?
Answers: 2
Chemistry, 23.06.2019 11:00, randyg0531
Which of the following reactions is endothermic? h2(g) + ½ o2(g) h2o(g), h = -57.82 kcal ½n2(g) + o2(g) + 8.1 kcal no2(g) ½ n2(g) + 3/2 h2(g) nh3(g) + 11.0 kcal c(diamond) + o2(g) co2, h = -94.50 kcal
Answers: 2
Chemistry, 23.06.2019 15:00, ineedhelp2285
The specific heat of a certain type of cooking oil is 1.75 cal/ (g c) how much heat energy is needed to raise the temperature of 2.67 kg of this oil from 23 c to 191 c
Answers: 1
Chemistry, 23.06.2019 16:00, tanoah5729
50 points - answer entirely - will reward brainliest
Answers: 1
Asample of phosphorus-32 has a half-life of 14.28 days. if 55 g of this radioisotope remain unchange...
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