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
tester [92]
3 years ago
15

Is calcium fluoride a pure substance, element, compound, or mixture?

Chemistry
2 answers:
Yuliya22 [10]3 years ago
7 0

compound

calcium and flourine


kenny6666 [7]3 years ago
3 0

<u>Answer:</u> The correct answer is compound.

<u>Explanation:</u>

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass.

A compound is a substance which is formed by two or more different type of atoms when they chemically combine.

An element is defined as the substance which have only one type of atoms.

Mixture is defined as the solution which is made by the combination of two or more substances in which each substances retain their original chemical properties.

Calcium fluoride is made by the chemical combination of calcium and fluorine atoms. Thus, it is considered as a compound.

Hence, the correct answer is compound.

You might be interested in
Imagine a planet that has a similar atmospheric pressure to Earth (760 mmHg) but different concentrations of gases in its atmosp
RUDIKE [14]

Answer:

76 mmHg is the partial pressure of oxygen on this new planet.

Explanation:

Atmospheric pressure on air on earth = 760 mmHg

On an unknown planet :

Oxygen makes up 10% of the atmosphere.

The mole fraction of oxygen gas can be written as = \chi_1=\frac{10}{100}=0.1

Carbon dioxide makes up 15% of the atmosphere.

The mole fraction of carbon dioxide gas can be written as = \chi_2=\frac{15}{100}=0.15

Nitrogen makes up the remaining 75% of the atmosphere.

The mole fraction of nitrogen gas can be written as = \chi_1=\frac{75}{100}=0.75

Atmospheric pressure of air on unknown planet,p= 760 mmHg (given)

Partial pressure of gases can be calculated by the help o Dalton's law of partial pressure:

Partial pressure of oxygen gas :

p_1=p\times \chi_1

p_1=760 mmHg\times 0.1=76 mmHg

Partial pressure of carbon dioxide gas :

p_2=p\times \chi_2

p_2=760 mmHg\times 0.15=114 mmHg

Partial pressure of nitrogen gas :

p_3=p\times \chi_3

p_3=760 mmHg\times 0.75=570 mmHg

8 0
3 years ago
Water is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Whic
Andrew [12]
It has take place as a solid  <span />
7 0
3 years ago
Read 2 more answers
Ions of an element (elements with different charges) contain different numbers of what
Vadim26 [7]

Answer:

an ion is an element that has different numbers of protons and electrons

Explanation:

An ion is positive when it has more protons than electrons and negative when it has more electrons than ions.

(Hope this was helpful!) :)

7 0
2 years ago
Which law did the U.S. Congress pass as a response to the Dust Bowl?
DENIUS [597]
Question 2: Answer is (B), Soil Conservation Act (1936)



Hope that helps!!!
7 0
3 years ago
Write the reaction that occurs when propyl methanoate is hydrolyzed in water and in NaOH
Free_Kalibri [48]

An ester , propyl methanoate ( HCOOC₃H₇) when reacts with sodium hydroxide( NaOH) forms sodium methanoate (HCOONa) as the main product and propanol (C₃H₇OH).

The reaction is as follows:

HCOOC₃H₇+NaOH ⇒HCOONa + C₃H₇OH

So when propyl methanoate is hydrolyzed in water and in NaOH then sodium methanoate (HCOONa) as the main product and propanol (C₃H₇OH) forms

5 0
3 years ago
Other questions:
  • Calculate the number of milligrams to 0.425 kg
    6·1 answer
  • How can the partial charges be shown in a polar covalent molecule?
    5·1 answer
  • 1.Write out the net equation for the dissolution of the ionic compound KNO3.
    6·1 answer
  • What happens to the total amount of matter and energy during a chemical reaction ?
    5·1 answer
  • How many digits are there to the
    15·1 answer
  • Need help ASAP... The diagram shows a box in the periodic table.. what is the atomic number of the element??​
    8·1 answer
  • How many atoms in total are there in 7.35 mol of magnesium oxide (MgO)<br> molecules?
    7·1 answer
  • A man pulled a food cart 4.5 m to the right for 15 seconds. What is the average speed of the food cart to the nearest tenth of a
    5·1 answer
  • Choose the true statement.
    7·1 answer
  • How many moles of h+ ions are present in 2.8 l of 0.25 m hydrobromic acid solution?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!