Chemistry, 11.01.2021 01:00 jenna34032
HELP NEEDED!! IF SOMEONE COULD ANSWER THIS ASAP THAT WOULD BE AMAZING THANK YOU SO MUCH
The table shows the amount of radioactive element remaining in a sample over a period of time.
Radioactive Decay Rate
Amount of Radioactive Sample(grams) Time(hours)
186.0 \0
147.0 \7
117.0 \14
93.0 \21
23.3 \63
Part 1: What is the half-life of the element? Explain how you determined this.
Part 2: How long would it take 320 g of the sample to decay to 2.5 grams? Show your work or explain your answer.
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.
Answers: 2
Chemistry, 22.06.2019 08:30
Which metal exist in liquid state and can be cut with knife ?
Answers: 2
Chemistry, 22.06.2019 11:50
Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution
Answers: 2
Chemistry, 22.06.2019 13:30
Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.
Answers: 1
HELP NEEDED!! IF SOMEONE COULD ANSWER THIS ASAP THAT WOULD BE AMAZING THANK YOU SO MUCH
The table s...
History, 16.04.2020 22:53
History, 16.04.2020 22:53
Spanish, 16.04.2020 22:53
English, 16.04.2020 22:53
Physics, 16.04.2020 22:53
Chemistry, 16.04.2020 22:53
Arts, 16.04.2020 22:53
English, 16.04.2020 22:53
Mathematics, 16.04.2020 22:53
English, 16.04.2020 22:53