subject

Chemistry, 20.11.2020 01:40 Hfruit

A mystery element "A" has two stable isotopes X-100 which occurs 20% of the time and X-120 which occurs 80% of the time. What is the average mass of element "A"?

A-100 amu

B-104 amu

C-116 amu

D-120 amu

ansver

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 22:10, apere655

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

Answers: 1

Chemistry, 22.06.2019 05:30, alexusnicole817

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Answers: 2

Chemistry, 22.06.2019 08:40, jeffcarpenter

What is the value of keq for the reaction expressed in scientific notation?

Answers: 1

Chemistry, 22.06.2019 09:00, valeriekbueno

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Answers: 1

You know the right answer?

A mystery element "A" has two stable isotopes X-100 which occurs 20% of the time and X-120 which oc...

Questions in other subjects:

Konu

English, 09.10.2019 11:00

The poems “i, too” by langston hughes and “from the dark tower” by countee cullen both use figurative language to express their opinions about racial segregation. read each poem, a...

Konu

Business, 09.10.2019 11:00

Why do governments use tax money to supply public goods and services, instead of selling them to those people who use them?...

Konu

Biology, 09.10.2019 11:00

Explain the process of filtration, reabsorption and secretion. which direction is the filtrate moving in each process? where does filtration, reabsorption and secretion happen in...

Konu

Chemistry, 09.10.2019 11:00

Gay is the appropriate mass of 25cm^3 of silver, if the density is 10.5 g/cm^3 a) 0.42 g b) 2.4 g c) 42 g d) 260 g...

Konu

Social Studies, 09.10.2019 11:00

It is difficult for parents to impose restrictions on adolescents' media consumption because...

Konu

History, 09.10.2019 11:00

What kinds of government emerged in greek city-states after dark age?...

Konu

Mathematics, 09.10.2019 11:00

To get the next term in the sequence, multiply the last term by 2.5 . what is the value of the next term? 1 , 2.5 , 6.25, 15.625,...

Konu

Business, 09.10.2019 11:00

Which of the following is not a factor affecting elasticity? a. availability of substitutes b. the goods relative importance c. whether the food is a necessity...

Konu

Chemistry, 09.10.2019 11:00

You add 8.4 g iron to 29.80 ml of water and observe that the volume of iron and water together is 30.87 ml . calculate the density of iron....

Konu

English, 09.10.2019 11:00

Which event would most likely result in arsenic poisoning in the united states today? a. inhaling sawdust at a construction site b. decorating with green wallpaper

More questions: Chemistry Another questions