subject

Chemistry, 26.02.2021 01:20 fefe57

After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged. What was the original mass of the sample?

ansver

Answers: 3

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 09:20

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Answers: 1

question

Chemistry, 22.06.2019 11:00

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Answers: 3

question

Chemistry, 23.06.2019 00:00

Which samples do the atoms have the least kinetic energy

Answers: 2

question

Chemistry, 23.06.2019 02:30

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

Answers: 1

You know the right answer?

After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged. What was the original mass of t...

Questions

question

History, 05.12.2019 08:31

In relation to the balance of power, why is the evolution of the position of majority leader necessary ? (there are two answers) a. because the...

question

History, 05.12.2019 08:31

Can someone me? which occurred in a settlement house? a. newly arrived immigrants settled. b. many families li...

question

Geography, 05.12.2019 08:31

When a lake has no outlet to the ocean, a. the lake begins to sink below sea level b. salt and minerals build up in the waters over time c. the lake...

question

Geography, 05.12.2019 08:31

Jacob is making a banner using red paper and blue paper. he uses 5/6 meter of red paper for every 1/3 meter of blue paper. wha...

question

English, 05.12.2019 08:31

Which is the strongest thesis statement? the two authors include interesting historical facts in their writing. while both books take a different app...

question

Mathematics, 05.12.2019 08:31

1) are 1.73 and 1.730 equivalent ? is one greater ? 2 ) which one is greater : 4.3 or 4.03 ?...

question

Mathematics, 05.12.2019 08:31

It took ashia 4 hours to complete a 16 km walk. what was her average speed in kilometres per hour?...

question

Mathematics, 05.12.2019 08:31

Find the volume of a cube whose sides are each 4 centimeters long...

question

Mathematics, 05.12.2019 08:31

Triangular prism height 3ft, width 4ft, hypotenuse 5ft, surface area 192 sqft, depth missing...

question

Biology, 05.12.2019 08:31

The ratio between the force of sliding friction and the normal force of an object is called...

question

Spanish, 05.12.2019 08:31

Los conquistadores llevaban armas avanzadas que los indígenas y por eso pudieron conquistarlos tan fácilmente. a. menos b. más c. tantas d. tan...

question

Mathematics, 05.12.2019 08:31

In 1926 the very first sat test asked if a man's salary is $20 a week and he spends $14 a week how long will it take him to save $300?...

question

Mathematics, 05.12.2019 08:31

After a rotation, a(–3, 4) maps to a'(4, 3), b(4, –5) maps to b'(–5, –4), and c(1, 6) maps to c'(6, –1). which rule describes the rotation?...

question

English, 05.12.2019 08:31

(you have to look at the picture to answer) and make sure to restate the question and use the underlined word in the ! !

question

Business, 05.12.2019 08:31

What is free trade? a. trade that is not subject to taxes or fees b. trade that governments do not interfere with c. trade with a high level of gover...

question

Biology, 05.12.2019 08:31

When converting from kilometers to meters, the decimal is moved a. three places to the left b. two places to the left c. three places to the right d....

question

Health, 05.12.2019 08:31

The primary food security program that participants purchase food, but not nonfood items, is called the a. supplemental food program for women, infan...

question

Physics, 05.12.2019 08:31

It is the highest velocity attainable by an object as it falls through the air....

question

Mathematics, 05.12.2019 08:31

Write a two-step equation involving a fraction and explain how to solve it....

question

Mathematics, 05.12.2019 08:31

What is tanb ? enter your answer, as a simplified fraction, in the box

More questions: Chemistry Another questions

Questions on the website: 13722363