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
V125BC [204]
3 years ago
11

When electrons are removed from the outermost shell of a calcium atom becomes

Chemistry
1 answer:
Maslowich3 years ago
7 0
When electrons are removed from the outermost shell of calcium atom, its atom becomes positively charged, with a charge of plus one.

When an electron is added to an atom, the atom becomes negatively charged, with a charge of minus one.

When these atoms become positively or negatively charged, they are known as ions. Positively charged ions are called cations and negatively charged ions are called anions.

Calcium is identified as one of the cations because it is positively charged when its electrons are removed from its outermost shell.
You might be interested in
7. Which is an example of a good insulator? <br>iron<br>copper <br>silver <br>rubber​
Dmitrij [34]

Answer:

Rubber is an insulator.

Remaining three are metals and hence conductors.

4 0
3 years ago
Which element is most likely to allow electricity to pass through it?
yKpoI14uk [10]
Hello,
I have attached a periodic table to allow you to further understand my answer. We know elements are categorized in groups of Metals, Nonmetals, and metalloids. Let’s analyze each element. Sulfur is a nonmetal which mean it does not conduct well and does not have a good appearance, the same applies to all the other non metals on this list, including sulfur and helium. Copper is our only answer in which it fits and electricity can pass through/conduct easily. So our answer is copper. I hope this helps you with your assignment.

4 0
3 years ago
Read 2 more answers
Baker’s yeast catalyzes the decomposition of hydrogen peroxide (dihydrogen dioxide) into oxygen and water. Directions: Add 10 mL
andreev551 [17]

Answer:

The unbalanced chemical equation: H₂O₂ → H₂O + O₂.

The balanced chemical equation: H₂O₂ → H₂O + 1/2O₂.

Explanation:

  • Hydrogen peroxide is decomposed into oxygen and water, which is a slow reaction.
  • It is can be catalyzed by using yeast.

The unbalanced chemical equation: H₂O₂ → H₂O + O₂.

The balanced chemical equation: H₂O₂ → H₂O + 1/2O₂.

1.0 mol of H₂O₂ is decomposed to 1.0 mol of H₂O and 0.5 mol of O₂.

3 0
4 years ago
PLEASE HELPP!!!
otez555 [7]

Answer:

vahshahhsjajaiaoakkakakaaosos

8 0
3 years ago
10)Calculate the molarity of a potassium dichromate solution prepared by placing 9.67 g of K Cro in a
lbvjy [14]

Answer:

0.33 M

Explanation:

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

Mass of K₂Cr₂O₇ = 9.67 g

Volume of solution = 100 mL

Molarity =?

Next, we shall determine the number of mole in 9.67 g of K₂Cr₂O₇. This can be obtained as follow:

Molar mass of K₂Cr₂O₇ = (39×2) + (52×2) + (16×7)

= 78 + 104 + 112

= 294 g/mol

Mass of K₂Cr₂O₇ = 9.67 g

Mole of K₂Cr₂O₇ =?

Mole = mass /Molar mass

Mole of K₂Cr₂O₇ = 9.67 / 294

Mole of K₂Cr₂O₇ = 0.033 mole

Next, we shall convert 100 mL to litre (L). This can be obtained as follow:

1000 mL = 1 L

100 mL = 100 mL × 1 L / 1000 mL

100 mL = 0.1 L

Finally, we shall determine the molarity of the solution. This can be obtained as follow:

Mole of K₂Cr₂O₇ = 0.033 mole

Volume of solution = 0.1 L

Molarity =?

Molarity = mole / Volume

Molarity = 0.033 / 0.1

Molarity = 0.33 M

Thus, the molarity of the solution is 0.33 M

8 0
3 years ago
Other questions:
  • 5- Given the reaction
    11·1 answer
  • What evidence cause thompson to change dalton's solid sphere model into the plum pudding model?
    15·1 answer
  • ___________ carry oxygen throughout the human body.
    5·2 answers
  • Which of the following is a benefit of tidal energy
    15·2 answers
  • What cellular activities could thiG be a start of?
    11·1 answer
  • Can someone help pls
    12·1 answer
  • Please answer! will mark brainiest for correct answer!
    11·2 answers
  • A red hot iron bar is dipped into 600 ml of water ( 600.g of water) which causes
    9·1 answer
  • How many electrons are in the valence shell
    13·1 answer
  • Which substance in the table below will heat up the fastest? water helium diamond or glass?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!