Chemistry, 06.03.2021 23:40, KillerSteamcar

Sodium-24 has a half-life of 15 hours. How much of a 20 mg sample would remain after two half-lives? 5 mg
2 mg
omg
10 mg

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 16:20, maevemboucher78

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Answers: 2

continue

Chemistry, 22.06.2019 06:30, dpchill5232

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Answers: 2

continue

Chemistry, 23.06.2019 03:30, LlayahHarbin

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon

Answers: 1

continue

Chemistry, 23.06.2019 06:00, kristine2424

How does a coronal mass ejection (cme) affect the solar wind? a cme adds more particles to the solar wind, intensifying it. a cme blocks the solar wind, causing it to fade. a cme does not affect the solar wind but it does affect auroras. a cme increases the amount of energy in the solar wind.

Answers: 2

continue

Do you know the correct answer?

Sodium-24 has a half-life of 15 hours. How much of a 20 mg sample would remain after two half-lives?...