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
Mkey [24]
3 years ago
6

Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.Magnesium

(Mg): 1s22s22p63s2
Chemistry
2 answers:
amm18123 years ago
3 0

Answer:

1s1

2s2/2p6

3s2⇨⇨ period 3 - group 2

laila [671]3 years ago
3 0
There’s 2 valence electrons in Mg
You might be interested in
How many protons, neutrons, and
Alexus [3.1K]

Your answer is 4 protons 4 electrons and 5 neutrons

7 0
2 years ago
URGENTTTTT What is the correct formula when Al+3 combines with CrO4-2
PIT_PIT [208]
A and C are incorrect because they are not complete transfer of valence electrons. Ionic bonds best to form a neutral molecule
8 0
3 years ago
The temperature of a substance increases when the ____________________ energy of the substance increases.
kykrilka [37]
Molecular

Hope it helps
7 0
3 years ago
Read 2 more answers
Chemical equation below demonstrate that?<br> NEED HELP ASAP
zmey [24]

(a) Matter cannot be created and destroyed by a chemical reaction.

Explanation:

(a) Matter cannot be created and destroyed by a chemical reaction. (correct)

The number and type of atoms entering the chemical reaction are the same with the number and type of atoms leaving the chemical reaction.

(b) The reactants are the same substance as the products. (wrong)

You may see in the reaction that we have as reactants zinc and hydrochloric acid which react to form the products, zinc chloride and hydrogen.

(c) The number of molecules in the reactants are equal to the number of molecules in the products. (wrong)

As reactants we have 2 hydrochloric acid (HCl) molecules and as products 1  hydrogen (H₂) molecule. Zn is a metal and ZnCl is a salt.

(d) The atoms on the reactants side are changed into different atoms on the products side. (wrong)

The number and type of atoms entering the chemical reaction are the same with the number and type of atoms leaving the chemical reaction.

Learn more about:

balancing chemical equations

brainly.com/question/13695436

#learnwithBrainly

7 0
2 years ago
What will happen to the pH of a buffer if acid/base ratio is increased by 100?
sp2606 [1]

Answer:

It will decrease by 2 units.

Explanation:

The Henderson-Hasselbalch equation for a buffer is

pH = pKa + log(base/acid)

Let's assume your acid has pKa = 5.

(a) If the base: acid ratio is 1:1,

pH(1) = 5 + log(1/1) = 5  + log(1) = 5 + 0 = 5

(b) If the base: acid ratio is 1:100,

pH(2) = 5 + log(1/100) = 5  + log(0.01) = 5 - 2 = 3

(c) Difference

ΔpH = pH(2) - pH(1) = 5 - 3 = -2

If you increase the acid:base ratio to 100:1, the pH will decrease by two units.

4 0
3 years ago
Other questions:
  • A. Use average bond energies together with the standard enthalpy of formation of C(g) (718.4 kJ/mol ) to estimate the standard e
    11·1 answer
  • What is the concentration of an alcl3 solution if 150. ml of the solution contains 550. mg of cl- ion?
    15·1 answer
  • onsider the following equilibrium, in which pure Ag3PO4 is dissolved in liquid water: Ag3PO4(s)↽−−⇀3Ag+(aq)+PO3−4(aq) If the con
    6·1 answer
  • Draw the structure of the aromatic compound para-aminochlorobenzene (para-chloroaniline). Draw the molecule on the canvas by cho
    5·1 answer
  • What monomer is polymerized to make acrylate? What is the chemical name for this popular polymer?
    11·2 answers
  • A sample of gaseous PCl5 was introduced into an evacuated flask so that the pressure of pure PCl5 would be 0.50 atm at 523 K. Ho
    6·1 answer
  • Which of the following is an example of a decomposition reaction?
    15·2 answers
  • So3+H2o→H2 So4<br>identify the nature of this reaction<br>helpp please i'm such a failure​
    8·1 answer
  • Help!!!!! please <br><br> there is no question just fill in the question marks
    12·2 answers
  • Have I did this correctly?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!