Chemistry

Chemistry, 28.07.2019 23:10, scottbrandon653

Arock has 50 percent of its original amount of potassium-40 remaining in it. potassium-40 has a half-life of 1.25 billion years. how long ago was the rock formed?
1.25 billion years ago
2.50 billion years ago
5.00 billion years ago
6.25 billion years ago

answer

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 19:30, haybaby312oxdjli

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Answers: 2

Chemistry, 22.06.2019 03:00, omoaye

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Answers: 1

Chemistry, 22.06.2019 11:00, nnaomii

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

Chemistry, 22.06.2019 13:30, amandajbrewerdavis

Table sugar completely dissolved in water is an example of a?

Answers: 1

Do you know the correct answer?

Arock has 50 percent of its original amount of potassium-40 remaining in it. potassium-40 has a half...

Questions in other subjects:

Konu

Mathematics, 25.07.2019 15:20

Odine-131 has a half-life of 8.04 days. how many grams of a 500 g sample will remain after 35 days? round your answer to the nearest hundredth of a gram....

Konu

Mathematics, 25.07.2019 15:20

Complete the equation of the line through (−6,5)(−3,−3)...

Konu

Social Studies, 25.07.2019 15:20

Do you agree that citizens should have the right to burn the flag under the first amendment? are there any types of speech that should not be protected under law? explain....

Konu

Biology, 25.07.2019 15:20

Materials chalk calcium hydroxide filter paper phenolphthalein heat source two pyrex beakers directions crush some classroom chalk (a mixture of limestone and gypsum) finely. mix c...

Konu

Mathematics, 25.07.2019 15:20

Find the quotient of 3 2/5 and 3 1/6 . express your answer in simplest form....

Konu

History, 25.07.2019 15:20

What type of voting requirement was aimed at eliminating poor voters? a grandfather clause a literacy test a poll tax a registration form...

Konu

English, 25.07.2019 15:20

Which statement about iambic meter is true? each foot consists of two unstressed syllables followed by a stressed syllable. each foot consists of one stressed syllable followed by...

Konu

Chemistry, 25.07.2019 15:20

When a cold beverage is placed outside, the gas particles cling to the side of the can and become water droplets. this is due to which change of state? a. condensationb. evaporatio...

Konu

English, 25.07.2019 15:20

6. which of the following is a nonverbal strategy in public speaking? a. varying the rate at which you speak b. using a variety of verbs and adjectives c. using a series of wo...

Konu

English, 25.07.2019 15:20

Which sentence contains an adverb clause? a. they went to their red, sprawling barn. b. tasting the sour lemonade, jake pursed his lips. c. the blueberry bushes have been growing,...

Other tasks in the category: Chemistry More task