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
elena55 [62]
3 years ago
15

I've asked before and gotten spammed hopefully I won't get spammed this time please help me with this someone.​ pls help anyonw

Chemistry
1 answer:
elena55 [62]3 years ago
3 0

Answer:

See below!

Explanation:

A.  The picture of the graph is attached.  You can tell the amount of protons in an element by looking at the periodic table.  The elements are ordered by the number of protons in an element.

B.  Carbon and silicon are at the peaks of the chart.  The peak is the highest point in a graph.

C.  The elements belong to the non-metal group.

D.  The halogens are non-metals, and their vapors are colorless.

The halogens are toxic to humans.

Halogen molecules are made of two atoms; they are diatomic.

Halogens react with non-metals to form crystalline compounds that are salts.

The halogens get less reactive going down the group on the periodic table.

Halogens can bleach vegetable dyes and kill bacteria.

E.  The picture of the table is attached.  To figure which numbers to put where, you need to pay attention to the other numbers.  The halogens follow a trend with each of these properties.  You have to put in the numbers that fit in among the other numbers.

You might be interested in
Why can liquid boil at a low pressure?
Paladinen [302]

Answer: I found this online. Hope it helps you.

Explanation:

This pressure is transmitted throughout the liquid and makes it more difficult for bubbles to form and for boiling to take place. If the pressure is reduced, the liquid requires less energy to change to a gaseous phase, and boiling occurs at a lower temperature.

7 0
3 years ago
Alcl3+Na =NaCl+ Al .did Al change oxidation number
saul85 [17]

Answer:

yes it is ( From +3 to 0 )

Explanation:

If this is the balanced equation:

AlCl3     +    3Na ——>    3NaCl      +      Al

Al      Cl        3Na             Na     Cl            Al

+3     -3        0                    +1       -1            0

5 0
3 years ago
What is the boiling point of water at sea level ??​
TEA [102]

Answer:

212 °F

Explanation:

4 0
3 years ago
Read 2 more answers
A 2 L container contains 5 moles of helium gas at 0.5 atm. What is the<br> temperature of the gas?
lara [203]

Answer:

2.44 K IS THE TEMPERATURE OF THE GAS

Explanation:

PV = nRT

P = 0.5 atm

V = 2 L

n = 5 moles

R = 0.082 L atm mol^-1 K^-1

T = ?

Substituting for T in the equation, we obtain:

T = P V / nR

T = 0.5 * 2 / 5 * 0.082

T = 1 / 0.41

T = 2.44 K

The temperature of the gas is 2.44 K

7 0
3 years ago
Which of the following represents the atomic number of an element?
Anna11 [10]

Answer:

The atomic number is the number of protons in the nucleus

4 0
3 years ago
Other questions:
  • what type of bond is involved when a metal from groups 1 or 2 bond with a nonmetal from groups 16 or 17
    11·1 answer
  • Using the balanced equation below,
    5·1 answer
  • Apply the appropriate word to the definition indicated please! Not all words have to be used
    11·2 answers
  • What is a hydrogen bond?
    15·1 answer
  • SOMEONE PLS HELP ITS FOR A TEST!!
    5·2 answers
  • What does heat and pressure have to do with<br> the rock cycle?
    6·1 answer
  • why would it not be necessary to heat the air in the balloon as much if the air outside the balloon is colder?
    6·2 answers
  • In the equation N2(g) + 3H2(g)--- 2NH3(g), how many liters of hydrogen
    6·2 answers
  • Which types of subatomic particles are found inside the nucleus of an atom?
    6·2 answers
  • What is true about elements in the same periodic
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!