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
alexira [117]
3 years ago
15

Calcium (Ca) and oxygen (O) combine to form an ionic compound. Which best describes the electron dot formula for this compound

Chemistry
1 answer:
Blizzard [7]3 years ago
3 0
CaO because oxygen have 2 dots and calcium as well
(oxygen valency -2
calcium valncy +2)= CaO
You might be interested in
What does inertia depend on??
zubka84 [21]
Inertia depends on the mass of an object. 
3 0
3 years ago
Read 2 more answers
Which structure does a plant cell have that an animal cell does not have?
satela [25.4K]

Answer:

cell wall

Explanation:

plants are the only cells that have cell walls. no other type of organism have a cell wall

6 0
3 years ago
The radioactivity of U-235 is of low intensity. Why then were the people of Hiroshima exposed to high intensity radiation in the
Marina86 [1]

Answer:

Explanation:

What occurred then is as a result of nuclear fission. This occurs as the Uranium-235 split into two smaller nuclei while releasing high energy neutrons. These neutrons bombard existing U-235 in the atmosphere and this reaction continue in a spontaneous manner until a chain reaction is formed of U-235, whose fall out fills the environment. This process was what led to people been exposed to high intensity radiation in the days and months after the atomic bomb was dropped.

7 0
3 years ago
Why atomic mass is an average vàlue​
lukranit [14]

Answer:

The atomic mass is the average number of protons and neutrons for all natural isotopes of an element. It is a decimal number.

Explanation:

Atomic Mass and Mass Number Example :

Hydrogen has three natural isotopes: 1H, 2H, and 3H. Each isotope has a different mass number.

1H has 1 proton. Its mass number is 1. 2H has 1 proton and 1 neutron. Its mass number is 2. 3H has 1 proton and 2 neutrons. Its mass number is 3. 99.98% of all hydrogen is 1H 0.018% of all hydrogen is 2H 0.002% of all hydrogen is 3H Together, they give a value of atomic mass of hydrogen equal to 1.0079 g/mol.

4 0
3 years ago
Read 2 more answers
In an exothermic reaction, energy may be released to the surroundings in the form of
djverab [1.8K]
In the form of heat.
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is a physical property of silver?
    6·2 answers
  • In water, HNO3 produces H+ ions. Which is the name for HNO3 in an aqueous solution?
    10·2 answers
  • A solution of NaCl ( aq ) is added slowly to a solution of lead nitrate, Pb ( NO 3 ) 2 ( aq ) , until no further precipitation o
    6·1 answer
  • The nahco3 is the limiting reactant and the hcl is the excess reactant in this experiment. determine the theoretical yield of th
    12·1 answer
  • What is a common problem associated with nuclear power plants
    12·1 answer
  • In the cathode ray tube experiment, J. J. Thomson passed an electric current through different gases inside a cathode ray tube i
    8·2 answers
  • Which of the following is the correct calculation for determining the density of an object with a mass of 54 g and a volume of 6
    12·1 answer
  • Why are salt and sugar both able to dissolve in water, even though the solutes have different types of chemical bonding?
    15·2 answers
  • Which of the following salts will be less soluble in 0.10 M NaCl than it is in pure water?
    10·1 answer
  • Electron configuration worksheet
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!