subject

Chemistry, 01.06.2021 16:10 tzartiger12

This exercise uses the radioactive decay model. Radium-221 has a half-life of 30 sec. How long will it take for 82% of a sample to decay

ansver

Answers: 1

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 02:30

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Answers: 1

question

Chemistry, 22.06.2019 05:00

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

Answers: 1

question

Chemistry, 22.06.2019 08:30

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Answers: 1

question

Chemistry, 22.06.2019 12:00

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

Answers: 1

You know the right answer?

This exercise uses the radioactive decay model. Radium-221 has a half-life of 30 sec. How long will...

Questions

question

Computers and Technology, 31.03.2020 01:27

An increasing concern for privacy and widespread availability of encryption products has led to the use of encryption for individual files and even en...

question

Computers and Technology, 31.03.2020 01:27

Use two variables k and total to write a for loop to compute the sum of the squares of the first 50 counting numbers, and store this value in total. T...

question

Social Studies, 31.03.2020 01:27

Psych Alan always turns the aquarium light on before putting fish food into the tank. After a while, he notices that the fish swim to the top to look...

question

Chemistry, 31.03.2020 01:27

Be sure to answer all parts. By taking into account electronegativity differences, draw the products formed by heterolysis of the carbon-heteroatom bo...

question

Mathematics, 31.03.2020 01:27

The perimeter of the figure is 3 What is the length of the missing side? Im 6 m 1?m 10 m

question

Biology, 31.03.2020 01:27

What three structures are unique to the plant cell?...

question

Mathematics, 31.03.2020 01:27

Find the solution 1) 2X-X + 3 -3 Y + 2Y = 2 2) 2(3X-4) +3X - 4= 6 3) 2Y- 3Y + 6 = -2y + 12 4)-3( 6X-4) = 6X -6...

question

English, 31.03.2020 01:27

Question: Passage 1 "Big data" is becoming a buzz word of the 21st century. Technically, big data refers to a data set that is too large t...

question

Biology, 31.03.2020 01:27

Ciprofloxacin is given as an antibiotic to healthy livestock to promote efficient weight gain. Strains of the bacterium Campylobacter jejuni naturally...

question

History, 31.03.2020 01:27

Under Qin, the philosophy and scholars if Confucianism were persecuted. At the beginning I’d the Han Dynasty, the imperial court accepted both Legalis...

question

Chemistry, 31.03.2020 01:27

According to the Arrhenius theory, the only negative ions in an aqueous solution of a base are...

question

Mathematics, 31.03.2020 01:27

36. A boat sailing at a speed of 35 mi/h set to head due west encounters a wind blowing 15 mi/h due south. What is the approximate r...

question

Engineering, 31.03.2020 01:27

A quantity of water within a piston–cylinder assembly executes a Carnot power cycle. During isothermal expansion, the water is heated from saturated l...

question

Mathematics, 31.03.2020 01:27

Two clocks now show the same time. One clock gains 1 second every hour, and the other clock gains 3 seconds every two hours. I...

question

Mathematics, 31.03.2020 01:27

Find the slope of -4 and 3...

question

Business, 31.03.2020 01:27

Anyone wants to summarize a article for me. It has to be 1/2 a page and single spaced. This is the article

question

Social Studies, 31.03.2020 01:27

Countries couldn’t pay their dept why ?...

question

World Languages, 31.03.2020 01:27

Many different countries have their own version of sign language. In the Global Signs: Denmark video we can see a comparison of the two versions of si...

question

Biology, 31.03.2020 01:27

Which of the following indicates average kinetic energy of the molecules in a substance

question

Social Studies, 31.03.2020 01:27

The employment-at-will doctrine implies that a person may leave an organization at will despite an existing contract. has become more influential in r...

More questions: Chemistry Another questions