subject

Chemistry, 27.08.2020 23:01 littlemcj

1. After 3 half-lives, how much of a 400 gram sample of radioactive uranium-238 remains? The half-life of U-238 is 4.47 years.

ansver

Answers: 3

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 15:30

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Answers: 1

question

Chemistry, 22.06.2019 20:00

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.

Answers: 2

question

Chemistry, 23.06.2019 03:00

How to calculate the mass of copper

Answers: 2

question

Chemistry, 23.06.2019 04:31

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus

Answers: 1

You know the right answer?

1. After 3 half-lives, how much of a 400 gram sample of radioactive uranium-238 remains? The half-li...

Questions

question

Chemistry, 21.01.2021 01:00

Which gas effuses 2.39 times slower than nitrogen gas? Use Graham’s law: VaVb=(mb)1/2(ma)1/2. I2 Br2 O2 Cl2...

question

Mathematics, 21.01.2021 01:10

Solve. -0.63 ÷ -0.7 = ill give brainiest...

question

Mathematics, 21.01.2021 01:10

I really need help for this geometry question, I would appreciate any help thank you.

question

History, 21.01.2021 01:10

What are some current demographic trends in the United States? Check all that apply. O People tend to marry at an older age. V There are more s...

question

Mathematics, 21.01.2021 01:10

MZAOC is a straight angle. mZAOB = 8x + 51° mZBOC = 6x– 25° Find mZAOB:...

question

English, 21.01.2021 01:10

YO I NEED HELP ASAP IM BEING TIMED AND IM CRYING AND BEGGING FOR SO PLEASE HELP Which statement best describes how Andy has been affected by the conf...

question

Biology, 21.01.2021 01:10

4. Watson and Crick made a successful model of DNA based on Rosalind Franklin's X-ray studies. This indicated that DNA was A. a triple h...

question

English, 21.01.2021 01:10

Mrs. Van Daan (Rising, nervous, excited). Something's happened to them! I know it! Mr. Van Daan. Now, Kerli! Mrs. Van Daan. Mr. Frank sai...

question

English, 21.01.2021 01:10

Anyone have remind. com...

question

World Languages, 21.01.2021 01:10

By choosing your behavior you can your mental health...

question

English, 21.01.2021 01:10

Whitch event in reading helpsto categorize odysseus as an archetype?...

question

Chemistry, 21.01.2021 01:10

What is the chemical formula for propane in butane?help hurry I’m doing it right know please...

question

Biology, 21.01.2021 01:10

Animals have four basic types of : nervous, epithelial, muscle, and connective....

question

History, 21.01.2021 01:10

Complete the following paragraph about one of the Persian Wars. When his father died, decided to continue the war with the Greeks. He spent 10...

question

Mathematics, 21.01.2021 01:10

Y = -x^2 + 4x quadratic formula...

question

Mathematics, 21.01.2021 01:10

Please help im super behind :((( pls include an explanation if u can

question

Mathematics, 21.01.2021 01:10

How can you write the equation for a linear function if you know only two ordered pairs for the function? Drag tiles to complete the explanation. Til...

question

Mathematics, 21.01.2021 01:10

Please help ...

question

Biology, 21.01.2021 01:10

Use the term gradually in a sentence describing Earth’s movements...

question

Health, 21.01.2021 01:10

I love tacos anybody agree?...

More questions: Chemistry Another questions