Chemistry, 07.12.2020 20:00 StupidityIsKey
DESPERATE WILL GIVE BRAINLIST AND THANKS
The half-life of an element is 150 years. If a 40-gram sample was originally deposited, how much is left
after 300 years?
Question 4 options:
30 grams
20 grams
10 grams
5 grams
Answers: 3
Another question on Chemistry
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Chemistry, 23.06.2019 07:20
F1.5 mol of nabh4 react, how many moles of b2h6 are formed? 2 nabh4(aq) + h2so4(aq) → 2 h2(g) + na2so4(aq) + b2h6(g)
Answers: 1
Chemistry, 23.06.2019 18:30
Achemist reacted 57.50 grams of sodium metal with an excess amount of chlorine gas. the chemical reaction that occurred is shown. na + cl2 ? nacl if the percentage yield of the reaction is 86%, what is the actual yield? show your work, including the use of stoichiometric calculations and conversion factors.
Answers: 1
You know the right answer?
DESPERATE WILL GIVE BRAINLIST AND THANKS
The half-life of an element is 150 years. If a 40-gram sam...
Questions
Geography, 27.04.2021 02:00
Mathematics, 27.04.2021 02:00
Biology, 27.04.2021 02:00
Mathematics, 27.04.2021 02:00
Biology, 27.04.2021 02:00
History, 27.04.2021 02:00
Mathematics, 27.04.2021 02:00
Mathematics, 27.04.2021 02:00
Mathematics, 27.04.2021 02:00
Computers and Technology, 27.04.2021 02:00
