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
maks197457 [2]
3 years ago
15

What is the atomic number? pls help.

Chemistry
1 answer:
castortr0y [4]3 years ago
3 0

Answer:

8

Explanation:

You might be interested in
Please help me !!!!
just olya [345]

Answer:

12, 28, 16

Explanation:

If we are trying to find mass, neutrons are our guy. 28 "mass points" means 28 neutrons. Each neutron is one point

We know there are 12 protons and electrons if we look at a table of elements, the number in the top-left is always the number of protons and we can subtract mass from the protons to get our electrons

3 0
3 years ago
What is helium an example of? <br> element <br> compound <br>atomic number <br>subatomic particle​
fgiga [73]

Answer:

atomic number

Explanation:

hope this helps

4 0
3 years ago
Read 2 more answers
Is the reaction mg²⁺(aq) + h₂o(l) → mgo(s) + 2h⁺(aq) endothermic or exothermic?
aliya0001 [1]
<span>If energy is released, the reaction is exothermic. If energy is absorbed, the reaction is endothermic. Since heat is being absorbed in this reaction (to break down H2O into H2 and O), the reaction is endothermic.</span>
3 0
3 years ago
Which of the following particles combine to form molecules?
solniwko [45]

Answer: i think its protons and electrons but it also might just be atoms because protons and electrons  make atoms when there are also neutrons

Explanation:

7 0
3 years ago
In your own words, please describe the difference between a complete ionic equation and a net ionic equation.
beks73 [17]

Explanation:

In the molecular equation for a reaction, all of the reactants and products are represented as neutral molecules (even soluble ionic compounds and strong acids). In the complete ionic equation, soluble ionic compounds and strong acids are rewritten as dissociated ions.

The net ionic equation is a chemical equation for a reaction that lists only those species participating in the reaction. The net ionic equation is commonly used in acid-base neutralization reactions, double displacement reactions, and redox reactions.

6 0
3 years ago
Other questions:
  • How many molecules are in 4.5 moles of H2O?
    15·1 answer
  • In a oxidation–reduction reaction, oxidation and reduction must occur simultaneously. Is this statement true or false?
    12·1 answer
  • The thermochemical equation for the reaction in which calcium carbonate breaks down is shown below. how can the reaction be desc
    13·1 answer
  • Which is an example of how the body maintains homeostasis? by increasing thirst when cells are low on water by decreasing thirst
    12·2 answers
  • Use the concept of potential energy to describe how a covalent bond forms between two atoms.
    10·1 answer
  • Use the reactions below and their equilibrium constants to predict the equilibrium constant for the reaction 2A(s)⇌3D(g). A(s) ⇌
    11·1 answer
  • The number 89.667 rounded off to three significant figures is
    11·1 answer
  • Wha is the molecular formula ?<br><br><br><br><img src="https://tex.z-dn.net/?f=NONSENSE%3DREPORTED" id="TexFormula1" title="NON
    5·1 answer
  • Sally has touched a hot pan on the stove and burnt her hand. This example shows what type of heat transfer?
    12·1 answer
  • How many joules are required to change 40 grams of water to steam at the boiling point?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!