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
viktelen [127]
2 years ago
10

When an atom _______ an electron, it charge is negative .

Chemistry
2 answers:
olganol [36]2 years ago
6 0
Gains. when theres a neutral atom it has an equal number protons and electrons(they all cancel which is what makes it neutral) so when it gains an electron there’s 1 more negative that doesn’t cancel so it changes the charge to negative.
nikitadnepr [17]2 years ago
3 0

Answer:

Gains

Explanation:

If it gains an electron it causes the atom to become negative since electrons are negative and an overall charge of an atom is neutral. Therefore, it would become negative.

Hope this helps :)

You might be interested in
Which of the following is not an example of a pure element?
motikmotik
Copper wire is not an example of a pure element because although it's made by pure elements, it's not one itself. It's made by factories.

Have a nice day! :)
8 0
3 years ago
Read 2 more answers
What property of water is primary for living organisms? (SC.6.E.7.4) *
katrin [286]

Answer:

It is liquid at most temperatures on Earth.

8 0
3 years ago
The force of gravity pulls down on your house with a total force of 300,000 newtons. The force of gravity pulling down on your h
Mila [183]

Answer: B. Was twice as tall

Explanation: The strength of the gravitational force between two objects depends on two factors, mass and distance. If the distance is doubled, the force of gravity is one-fourth as strong as before.

7 0
3 years ago
Read 2 more answers
Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of alumin
Lerok [7]

<u>Answer:</u> The percentage yield of HF is 73.36 %

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}     ....(1)  

For calcium fluoride:

Given mass of calcium fluoride = 6.25 kg  = 6250 g   (Conversion factor: 1 kg = 1000 g)

Molar mass of calcium fluoride = 78.07 g/mol

Putting values in above equation, we get:  

\text{Moles of calcium fluoride}=\frac{6250g}{78.07g/mol}=80.05mol

For the given chemical reaction:

CaF_2+H_2SO_4\rightarrow CaSO_4+2HF

By Stoichiometry of the reaction:

1 mole of calcium fluoride produces 2 moles of hydrofluoric acid

So, 80.05 moles of calcium fluoride will produce = \frac{2}{1}\times 80.05=160.1mol of hydrofluoric acid

Now, calculating the theoretical yield of hydrofluoric acid using equation 1, we get:

Moles of of hydrofluoric acid = 160.1 moles

Molar mass of hydrofluoric acid = 20.01 g/mol

Putting values in equation 1, we get:

160.1mol=\frac{\text{Theoretical yield of hydrofluoric acid}}{20.01g/mol}=3203.6g=3.20kg

To calculate the percentage yield of hydrofluoric acid, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of hydrofluoric acid = 2.35 kg

Theoretical yield of hydrofluoric acid = 3.20 kg

Putting values in above equation, we get:

\%\text{ yield of hydrofluoric acid}=\frac{2.35g}{3.20g}\times 100\\\\\% \text{yield of hydrofluoric acid}=73.36\%

Hence, the percentage yield of HF is 73.36 %

4 0
3 years ago
How to balance this equation: <br> Cu(s) + O2(g) --&gt; CuO(s)
Lelu [443]
2Cu(s) + O2(g) --> 2CuO(s)
3 0
3 years ago
Other questions:
  • What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?
    10·1 answer
  • A substance that increases the rate of a chemical reaction is called a(n) _____. answer
    5·2 answers
  • The gas in the piston is being heated, and the piston has moved upward. The observation will be summarized in a row of the incom
    7·2 answers
  • MAX POINTS! BRAINLIEST TO BEST ANSWER
    7·2 answers
  • What symbol is used to show the standard reduction potential of an oxidation reaction in a half-cell?
    6·1 answer
  • The incredible catalytic power of enzymes can perhaps best be appreciated by imagining how challenging life would be without jus
    6·1 answer
  • FeCl3 + NaOH → Fe(OH)3 + NaCl​
    6·1 answer
  • What happens when liquid changes to gas?
    15·1 answer
  • How do human beings prepare their food<br>​
    6·2 answers
  • Pour a few drops of coconut oil in water. Write down the observations. Is oil soluble in water? Give reason.​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!