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
Sophie [7]
3 years ago
5

Match element to how many valence electrons it has

Chemistry
1 answer:
puteri [66]3 years ago
3 0

Al - 3.

S - 6.

Mg - 2.

P - 5.

Si - 4.


You might be interested in
A and B are two imaginary substances. The molecules of substance A have weak electrical forces between them. The
GrogVix [38]
I believe the answer is A, if they have a stronger connection lower the vapor pressure so higher the boiling point
7 0
1 year ago
PLEASE HELP!!! ILL GIVE YOU BRAINLIEST!!!!
saul85 [17]

Answer:

A.

Explanation:

It would be A. because the question is asking how the harmful chemicals have an effect on the environment. This answer also proves that even though we don't mean to harm the environment it still happens because we are using these chemicals for things in our daily life.

8 0
3 years ago
What is the symbol for an ion which has 8 protons and 10 electrons?<br> O F-1<br> ON-3<br> Cr-1
Genrish500 [490]

Answer:

here is the perfect answer :O^-2

7 0
3 years ago
Suppose 17. g of hydrochloric cid is mixed with 6.99 g of sodium hydroxide calculate the minimum mass of hydochloric acid taht c
Eva8 [605]

Answer: 10.62g

Explanation:

First let us generate a balanced equation for the reaction.

HCl + NaOH —> NaCl + H2O

Molar Mass of HCl= 1 + 35.5 = 36.5g/mol

Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

From the question,

Mass of HCl = 17g

Mass of NaOH = 6.99g

Converting these Masses to mole, we obtain:

n = Mass / Molar Mass

n of HCl = 17/36.5 = 0.4658mol

n of NaOH = 6.99/40 = 0.1748mol

From the question,

1 mole of NaOH requires 1mole of HCl.

Therefore, 0.1748mol of NaOH will also require 0.1748mol of HCl.

But we were told that 17g( i.e 0.4658mol) of HCl were mixed.

Therefore, the unreacted amount of HCl = 0.4658 — 0.1748 = 0.291mol

Converting this to mass, we have:

Mass of HCl = n x molar Mass

Mass of HCl = 0.291 x 36.5

Mass of HCl = 10.62g

Therefore the left over Mass of HCl is 10.62g

8 0
3 years ago
Water is a substance made up of the elements hydrogen
xeze [42]

Answer:

A. 2

Explanation:

A particle of water is made up of two hydrogen atoms and one oxygen atom. However, the question asked for how many types of atoms there are, so the answer is 2.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which feature of four different marine fossils makes the fossil organism most similar to the present-day organism with four limb
    15·1 answer
  • Which of the following is most likely to be a conductor
    14·1 answer
  • How do different forms of transportation meet people’s transportation needs?
    12·1 answer
  • Indicate how you might prepare acetic acid from ethene
    11·1 answer
  • Consider the reaction: 2HI(g) ⇄ H2(g) + I2(g). It is found that, when equilibrium is reached at a certain temperature, HI is 35.
    12·1 answer
  • Write the ionic equation for the neutralisation reaction
    5·1 answer
  • (b) the absolute temperature of the gas at which 3.33x103 mol occupies 478 mL at 750 torr,​
    7·1 answer
  • Mixture of same boiling point cannot be separated by using distillation why?<br>​
    5·2 answers
  • Which of the following protects the contents of the nucleus
    10·1 answer
  • Name any <br>three kinds of mixtures with example​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!