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
BigorU [14]
3 years ago
15

What happened to calcium when it obtains an outer shell

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
5 0
Calcium is defined as a metal because of both its physical and chemical traits. They all have an outer shell with two electrons and are very reactive. Those elements in the second column have two electrons ready to make compounds. It shouldn't surprise you that calcium has a valence of 2.
You might be interested in
What is chlorofluorocarbons <br>explain​
Kryger [21]

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. ... Individual CFC molecules are labeled with a unique numbering system

<h3>PLEASE MARK ME AS BRAINLIEST PLEASE PLEASE PLEASE </h3>
3 0
3 years ago
How many atoms of titanium are there in 0.125 mole of each of the following?a. ilmenite, FeTiO3b. titanium(IV) chloridec. Ti2O3d
Gekata [30.6K]

Answer:

a. 7.528x10²² atoms Ti

b. 7.528x10²² atoms Ti

c. 1.5055x10²³ atoms Ti

d. 2.258x10²³ atoms Ti

Explanation:

Using the molecular formula of the structures, we can determine the moles of titanium in 0.125 moles of each compound. With moles of titanium we can convert these to atoms using Avogadro's number as follows:

a. FeTiO₃: 1 mole of Ti per mole of FeTiO₃.

Moles of Ti are 0.125 moles. Atoms are:

0.125 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>7.528x10²² atoms Ti</h3>

b. Titanium (IV) chloride = TiCl₄: 1 mole of Ti per mole of TiCl₄.

Moles of Ti are 0.125 moles. Atoms are:

0.125 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>7.528x10²² atoms Ti</h3>

c. Ti₂O₃: 2 moles of Ti per mole of Ti₂O₃.

Moles of Ti are 2*0.125 moles = 0.25 moles. Atoms are:

0.25 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>1.5055x10²³ atoms Ti</h3>

a. Ti₃O₅: 3 mole of Ti per mole of Ti₃O₅.

Moles of Ti are 3*0.125 moles = 0.375 moles of Ti. Atoms are:

0.375 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>2.258x10²³ atoms Ti</h3>
7 0
4 years ago
????????????????????????<br>thanks
sashaice [31]
D. I, II, and IV. Basically everything but the temperature.
6 0
4 years ago
which sample, when dissolved in 1.0 liter of water, produces a solution with the highest boiling point?
andrew-mc [135]
<span>The correct answer is (C) 0.2 mole MgCl2.

according to Van't Hoff factor rule which is the ratio between the actual

concentration of the particles produced when the substance dissolved and

the concentration of the substance as measured from its mass, so here 0.2

mole MgCl2 is the higher van't Hoff factor as it has more ions than other

choices and the higher concentration.

and when the boiling point formula is delta Tb = Kb * m * i.

 when delta Tb is the change in boiling point.

 and Kb is molal boiling point constant

and m is the molality of the solution

and i is Van't Hoff factor.

 so we can see the relationship between i and delta Tb, the greater Van't Hoff factor the higher the boiling point. so 0.2 MgCl2 is the higher boiling point as it is the greater van't Hoff factor.</span>
4 0
3 years ago
A _____ forecasts the weather using data collected from many sources.
Sav [38]
Meteorologist.............................
7 0
4 years ago
Other questions:
  • Please help quicklyy!!
    13·1 answer
  • Plz answer all 3, I will give 5 stars and brainiest!!! :)<br><br> THANKS
    11·1 answer
  • What is the pressure (in Pascals) of a sample of nitrogen that is at 625 mmHg?
    6·1 answer
  • Water is wet.<br> Change my mind
    6·1 answer
  • For a reaction for which AH = +29.3 kJ/mol and AS = +106 J/mol•K, which of the following statements is true? A) The reaction is
    9·1 answer
  • The boiling point of water is 1000C.
    12·1 answer
  • Which property of sulphuric acid makes it suitable to use as a catalyst for the preparation of esters?​
    14·1 answer
  • How can we use patterns on the periodic table to predict an element’s structure and reactivity?
    7·1 answer
  • a glass of water with a mass of 0.35 kg rests on the edge of a desk 0.85 m above the floor given that the acceleration due to gr
    13·1 answer
  • soaps do not work well in hard waters. But they can still be effected it large quantities of soap are added to water. Explain wh
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!