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
yawa3891 [41]
3 years ago
12

Help what is a b c please I want help this my quiz quick

Chemistry
1 answer:
stich3 [128]3 years ago
4 0

Answer:

1.

A= <u>sum</u><u>(</u><u>mass</u><u>*</u><u>percent</u><u> </u><u>abundance</u><u>)</u>

M 100

=(23.985*78.70)+(24.946*10.13)+(25.983*11.17)/100

= 24.3

2. The element is Magnesium.

3. 2412Mg,2512Mg and 2612Mg

You might be interested in
Pls help!!!!!
erica [24]

Answer:

moving i think! Hope this helps

Explanation:

3 0
3 years ago
Read 2 more answers
I need a Help plz! It’s my final exam!
LekaFEV [45]
Um i think gold... i think?
7 0
3 years ago
I need help ASAP!!! What type of chemical bond holds Lit and F together in LiF?
Bond [772]

Answer:

The correct answer is a) lonic Bond

Explanation:

Lithium fluoride (LiF) is a salt, formed by an ionic bond between a metal (Li) compound and a nonmetal (F).

4 0
3 years ago
which of the following best helps explain why an increase in temperature increases the rate of a chemical reaction?
NeTakaya

The given question is incomplete. The complete question is as follows.

Which of the following best helps explain why an increase in temperature increases the rate of a chemical reaction?

(a)   at higher temperatures, high-energy collisions happen less frequently.

(b)  at low temperatures, low-energy collisions happen more frequently.

(c)   at higher temperatures, less-energy collisions happen less frequently.

(d)  at higher temperatures, high-energy collisions happen more frequently

Explanation:

When we increase the temperature of a chemical reaction then molecules of the reactant species tend to gain kinetic energy. As a result, they come into motion which leads to more number of collisions within the molecules.

Therefore, chemical reaction will take less amount of time in order to reach its end point. This means that there will occur an increase in rate of reaction.

Thus, we can conclude that the statement at higher temperatures, high-energy collisions happen more frequently, best explains why an increase in temperature increases the rate of a chemical reaction.

6 0
3 years ago
Using this equation, m1v2=m2v2 , calculate the diluted molarity of 100 mL of a 0.5 M solution when 50 mL of
geniusboy [140]

The molarity of the diluted solution is 0.33 M

From the question given above, the following data were obtained:

Molarity of stock solution (M₁) = 0. 5 M

Volume of stock solution (V₁) = 100 mL

Volume of diluted solution (V₂) = 100 + 50 = 150 mL

<h3>Molarity of diluted solution (M₂) =? </h3>

The molarity of the diluted solution can be obtained by using the dilution formula as illustrated below:

<h3>M₁V₁ = M₂V₂</h3>

0.5 × 100 = M₂ × 150

50 = M₂ × 150

Divide both side by 150

M₂ = 50 / 150

<h3>M₂ = 0.33 M</h3>

Therefore, the molarity of the diluted solution is 0.33 M

Learn more: brainly.com/question/24625656

8 0
3 years ago
Other questions:
  • What is the mass of 200 kg object ​
    13·1 answer
  • Classify methanal according to the position of the c=o group
    14·1 answer
  • Hydrogen and chlorine atoms react to form a simple diatomic molecule in a 1:1 ration, that is HCl. The percent isotopic abundanc
    7·1 answer
  • How does the addition of salt to solid ice affect the melting transition from solid to liquid?
    15·2 answers
  • Without doing any calculations, determine which of the following solutions would be most acidic.
    10·1 answer
  • Use the drop-down menus to choose the correct answer to complete each statement.
    11·2 answers
  • Keratinocytes begin to die in the stratum granulosum. Keratinocytes begin to die in the stratum granulosum. True False
    5·1 answer
  • One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silv
    9·1 answer
  • The two products that are formed when a solution of HNO3 and a solution of NaOH react are water and:
    9·2 answers
  • How does the idea of a neutron help address the puzzles about the protons in the nucleus and the mass of atoms?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!