subject

Chemistry, 27.09.2019 23:30 mhayslett

Iwill give you 10 !
a newly discovered element, z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267.8 u, and 9.7 percent of the sample is an isotope with a mass of 270.9 u. what is the weighted average atomic mass for this element?
268.1 u
269.0 u
269.4 u
270.6 u

ansver

Answers: 2

Show answers

Another question on Chemistry

question

Chemistry, 21.06.2019 20:30

The balanced chemical equation for this lab is: 3cucl2(aq) + 2al(s) 3cu(s) + 2alcl3(aq) if 10.5 g copper chloride react with 12.4 g aluminum, what is the limiting reactant?

Answers: 3

question

Chemistry, 21.06.2019 22:50

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Answers: 2

question

Chemistry, 22.06.2019 06:30

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Answers: 2

question

Chemistry, 22.06.2019 10:40

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Answers: 1

You know the right answer?

Iwill give you 10 !
a newly discovered element, z, has two naturally occurring isotopes. 90.3...

Questions

question

Chemistry, 16.08.2019 17:10

Dalton’s atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are alike, and...

question

Mathematics, 16.08.2019 17:10

which table does not represent a function? a image of a table showing the value of f of x based on the value of x. when x equals negativ...

question

Computers and Technology, 16.08.2019 17:10

Explain briefly why we say that the "web" exists only in our minds....

question

English, 16.08.2019 17:10

There is one verb tense error in this paragraph. correct it: besides pay, summer jobs were an invaluable way for young people to gain confidence...

question

English, 16.08.2019 17:10

Which sentence in this excerpt from thomas paine’s common sense indicates that great britain protected the american colonies for mutual gain?

question

English, 16.08.2019 17:10

Excerpt from miniver chee edwin arlington robinson miniver sighed for what was not, and dreamed, and rested from his labors, h...

question

Physics, 16.08.2019 17:10

Which type of motion does a wooden block not have when sliding down a hill? question 1 options: a. vibrational b. rotational c. the block has all of...

question

Mathematics, 16.08.2019 17:10

Question 5 multiple choice worth 4 points) which expression is equivalent to (5^3)-^2? 1/5^3 -1/5.5.5.5.5.5 5^3 1/5.5.5...

question

English, 16.08.2019 17:10

Which group of words expresses a complete thought or idea...

question

Biology, 16.08.2019 17:10

Which type of wave requires a medium in which to travel? a. heat b. electromagnetic c. light d. mechanical...

question

Physics, 16.08.2019 17:20

Mercury has an average disease to the sun of 0.39 au. in two or more complete sentences, explain how to calculate the orbital period of mercury and th...

question

Chemistry, 16.08.2019 17:20

Which statement describes a major drawback of the bohr model that caused scientists to replace it? it worked only for helium and larger atoms.

question

English, 16.08.2019 17:20

What makes a novel a regional novel....

question

History, 16.08.2019 17:20

Which of the following statements is true regarding the impeachment of president johnson?...

question

Computers and Technology, 16.08.2019 17:20

List five computer software applications that you use regularly...

question

English, 16.08.2019 17:20

Based on the following excerpt, in what way does the fur piece serve as a contextual symbol for miss brill in katherine mansfield’s short story “miss...

question

Mathematics, 16.08.2019 17:20

The triangle represents a scale drawing that was created by using a factor of 1/2.

question

Physics, 16.08.2019 17:20

Mr. llama walked from his house to the stop sign down the street. he walked two miles to the stop sign and then returned back to his house. what is th...

question

English, 16.08.2019 17:20

Did he tell you anything or is he still _ _ _ _ _ _ _ _ _ cat _ _ _...

question

Physics, 16.08.2019 18:10

Which formula describes acceleration? m/s^2 m/s s/m m2...

More questions: Chemistry Another questions

Questions on the website: 13722363