subject

Chemistry, 12.05.2021 20:30 dan20012001

Staygold1967 avatar Staygold1967
1 hour ago
Chemistry
High School
PLEASEEE HEL!
1. Your original sample of Manganese-56 is 20.0 mg. How much is left after 3 half

lives? Remember to round to the correct number of significant figures and use units (mg).

2. Tritium is a radioactive form of hydrogen with a half-life of 12.3 years. How much of the 48.0 mg of tritium is still radioactive after 98.4 years?

Make sure to round to the correct number of significant figures and use units (mg).

3. How much of a 1.00 g polonium-214 sample remains after 818 microseconds? The half-life of polonium-214 is 163.7 microseconds.

Make sure to round to the correct number of significant figures and use units (g).

ansver

Answers: 2

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 07:00

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

Answers: 2

question

Chemistry, 22.06.2019 09:00

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Answers: 1

question

Chemistry, 23.06.2019 03:00

How to calculate the mass of copper

Answers: 2

question

Chemistry, 23.06.2019 06:20

Is water wet? my friends are debating.

Answers: 2

You know the right answer?

Staygold1967 avatar Staygold1967
1 hour ago
Chemistry
High School
PLEASEEE...

Questions

question

Mathematics, 11.10.2019 23:20

How many solutions does this equation have? 2(2x− 1) = (x+ 1) + 3(x− 1)...

question

Mathematics, 11.10.2019 23:20

Find the derivative of the vector function r(t)=ta×(b+tc)r(t)=ta×(b+tc), where a=⟨5,3,−4⟩a=⟨5,3,−4⟩, b=⟨−4,1,1⟩b=⟨−4,1,1⟩, and c=⟨−3,2,−4⟩c=⟨−3,2,−4⟩....

question

Physics, 11.10.2019 23:20

Abook weighing 5 n rests on top of a table. a downward force of magnitude 5 n is exerted on the book by the force of do the downward force in part a...

question

Spanish, 11.10.2019 23:20

Modelo yo dibujo (dibujar) 1. tú (cantar) 2. ellos (conversar) 3. tú y yo (cenar) 4. la profesora (enseñar) 5. mis compañeros (viajar) fill in the bla...

question

Mathematics, 11.10.2019 23:20

Disprove the following statement by giving a counterexample. (enter your answers as a comma-separated list.) for every integer p, if p is prime then p...

question

Social Studies, 11.10.2019 23:20

Mr. willis separates his students into four teams that each represent four different perspectives on a social issue. each group is to establish an arg...

question

Geography, 11.10.2019 23:20

What is the approximate location of the tasman hotspot in the pacific ocean?...

question

Mathematics, 11.10.2019 23:20

Aforce of 8 n makes an angle of π/4 radian with the y-axis, pointing to the right. the force acts against the movement of an object along the straight...

question

Chemistry, 11.10.2019 23:20

Calculate the ionization energy, of the one‑electron ion be3+. the electron starts in the lowest energy level, =1....

question

Mathematics, 11.10.2019 23:20

Determine whether or not the following expressions are valid, i. e., whether the left- and right-hand sides represent same function. use truth table m...

question

English, 11.10.2019 23:20

Montriece stood before a room filled with high school seniors and their parents. in his introduction he stated, "i come before you today, not as a fin...

question

Mathematics, 11.10.2019 23:20

My roommate and i are having a house party. we invite 15 couples. at the party, everyone must shake hands with everyone whom they do not already know....

question

Mathematics, 11.10.2019 23:20

Explain how the expression 19√2+2√8 can be simplified using the distributive property....

question

Chemistry, 11.10.2019 23:20

Balance the following equation: ca3(po4)2(8) +- 51020) --c($) - -) - p4)...

question

Mathematics, 11.10.2019 23:20

The equation y = 10x describes the amount of money sandra earns, where x is the number of hours she works and y is the amount of money she earns. the...

question

English, 11.10.2019 23:20

What is the most ethical course of action the reporter could take? investigate the claims without revealing that the pilot is...

question

Mathematics, 11.10.2019 23:20

Find two consecutive integers such that their sum equal to the difference of three times the larger and two times the smaller...

question

Mathematics, 11.10.2019 23:20

What does it mean to interpret something in context? i'm working with domain and range and this is just setting me off, so could someone explain?...

question

Advanced Placement (AP), 11.10.2019 23:20

If there's any doubt about whose turn it is to go, the most important rule is yield to...

question

Biology, 11.10.2019 23:20

1.) how are stem cells being used to improve the lives of people with skeletal differences? a) they are being used to power bionic limbs....

More questions: Chemistry Another questions