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
hoa [83]
3 years ago
7

An atom with atomic number of 20 and a plus 1 charge (Help)

Chemistry
1 answer:
VMariaS [17]3 years ago
6 0

Answer:

calcium 20. charge of calcium is +2

2,8,8,2  is elecrons arrangement in the outermost shell.2 electrons in the outermost shell easily remove it. And form stable cations.

Explanation:

You might be interested in
4 g of ag2so4 will dissolve in 1l of water. calculate the solubility product (ksp) for silver (i) sulfate.
Bas_tet [7]
Reaction of dissociation: Ag₂SO₄ → 2Ag⁺ + SO₄²⁻.
m(Ag₂SO₄) = 4 g.
V(Ag₂SO₄) = 1 l.
n(Ag₂SO₄) = m(Ag₂SO₄) ÷ M(Ag₂SO₄).
n(Ag₂SO₄) = 4 g ÷ 311,8 g/mol.
n(Ag₂SO₄) = 0,0128 mol.
n(Ag⁺) = 2 · 0,0128 mol = 0,0256 mol.
n(Ag₂SO₄) = n(SO₄²⁻) = 0,0128 mol.
c(Ag⁺) = n ÷ V = 0,0256 mol ÷ 1 l = 0,0256 mol/l.
Ksp = c(Ag⁺)² · c(SO₄²⁻).
Ksp = (0,0256 mol/l)² · 0,0128 mol/l.
Ksp = 8,3·10⁻⁶.

7 0
3 years ago
Draw the major organic product(s) for the reaction. The starting material is a benzene ring with one substituent. The substituen
Mice21 [21]

Answer:

See Explanation

Explanation:

In electrophilic aromatic substitution, the benzene ring undergoes substitution when it is reacted with suitable electrophiles.

The products of electrophilic aromatic substitution depends on the substituents already present on the benzene ring. Some substituents activate the ring towards electrophilic substitution and direct the incoming electrophile to the ortho and para positions on the ring while some substituents deactivate the benzene ring towards electrophilic substitution and direct the incoming electrophlle to the meta position on the ring.

The amide substituent is moderately activating and is an ortho, para director hence the products shown in the mage attached to this answer.

3 0
3 years ago
How much liquid does this graduated cylinder contain?
nikklg [1K]

Answer:

I think 44 mL

Explanation:

I hope this helps u :D

8 0
3 years ago
Which of the following statements applies to all states of matter? A. Matter takes the shape of its container. B, Matter is made
Marina86 [1]
D

A describes liquid, b describes solid, and c describes solid as well. therefore d is the only good answer
7 0
3 years ago
A nickel is placed in a cup of boiling water. Predict whether a solution will form.
Volgvan
I think the copper could melt to cup and the water would smell like rust
6 0
3 years ago
Other questions:
  • What is the BEST definition for friction?
    14·1 answer
  • Which of the following types of reactions would decrease the entropy within a cell? A. Dehydration reaction, B. Hydrolysis, C. R
    14·1 answer
  • What would the formula of gallium<br> bromide be?
    14·1 answer
  • Please help me!!!!!!!!
    10·1 answer
  • Do you think a single gene controls height in humans, as it does in peas? Explain your answer.
    7·2 answers
  • Abbreviation for mole
    12·1 answer
  • Can someone help me with this question. <br><br> I’ll mark brainliest
    6·1 answer
  • . Calculate the pH and the pOH of each of the following solutions at 25 °C for which the substances ionize completely:
    8·1 answer
  • A container is filled to a volume of 55.2 L at 61 °C. While keeping the
    14·2 answers
  • A case of paper has a mass of 2000 g. A case of paper contains 10 reams of paper. One ream of paper is 500 sheets. What is the m
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!