1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yulyashka [42]
3 years ago
15

How do you do these?

Chemistry
1 answer:
Agata [3.3K]3 years ago
6 0

Solve these problems like weighted averages:

The first one:

Multiply the masses (isotope numbers) by the decimal form of the percentage. Add them

0.076 (6) + 0.924 (7) = 6.924


The second one:

0.2 (10) + 0.8 (11) = 10.8


If you think about it, these answers make sense. 6.924 is much closer to 7 than to 6 (since there's a lot more lithium-7 than there is lithium-6). 10.8 is closer to 11 than to 10.


You might be interested in
Plates that are floating on molten<br> 5. The Earth's surface is made of<br> rock.
irinina [24]

What's the question?

8 0
4 years ago
What is the product of the reaction between arsenic and oxygen
Ivan

Answer:

d

Explanation:

As + O2 -------->as2o3

5 0
3 years ago
Read 2 more answers
There are always attractive forces between a collection of atoms or molecules which may not be negligible as suggested by the ki
Harrizon [31]

Answer:

Negligible

Explanation:

According to the kinetic theory of gases, the degree of intermolecular interaction between gases is minimal and gas molecules tend to spread out and fill up the volume of the container.

If the attraction between gas molecules increases, then the volume of the gas decreases accordingly. This is because, gas molecules become highly attracted to each other.

This intermolecular attractive force may be so strong, such that the actual volume of the gas become negligible compared to the volume of the container.

7 0
3 years ago
Could the Periodic Table be arranged differently?
coldgirl [10]

Answer:

No because it is stayed that way and you can't define them differently.

7 0
3 years ago
Read 2 more answers
What is the chemical equation
Serggg [28]

Chemical equation is the symbolic representation of chemical reactions.

Explanation

Chemical reactions are known as the reaction where two or more molecules or compounds react with each other leading to formation of product compounds along with either release or absorption of energy.

The symbolic representation of the processes occurring in a chemical reaction is termed as chemical equation.

The symbolic representation includes the reactants, products, external energy type and quantity of external energy and also about release of energy if occurs.

So the reactants are usually written in the left side of the chemical equation whereas on the right the products are written.

Both the sides are linked by a single headed arrow mark.

Some both the sides are linked by double heated arrow mark indicating the equilibrium chemical reaction.

5 0
3 years ago
Other questions:
  • Measurements show that the energy of a mixture of gaseous reactants increases by during a certain chemical reaction, which is ca
    9·1 answer
  • Which of these reactions can be classified as synthesis reactions?
    6·1 answer
  • 6th grade science help me :)))
    9·2 answers
  • Search blue bottle experiment, read over the reaction, and explain why the colorless solution turns blue
    7·1 answer
  • A substance undergoes a change.<br> Which statement indicates that the change was a chemical change?
    15·1 answer
  • When a reaction between Magnesium and Hydrochloric acid take place the mass of the reactants is more than the mass of the produc
    8·1 answer
  • A. Direction: Identify the word or phrase being described in the sentence. Write your
    9·1 answer
  • HELP PLEASE
    7·1 answer
  • How much of a 10 M solution is needed to make 1 liter of a 1M solution?
    15·1 answer
  • Gold (Au) should have an electron notation that ends in 6s24f145d9. To become more stable, the electrons in reality rearrange th
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!