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
kirill [66]
3 years ago
11

5. All of the following statement describes compounds, EXCEPT?

Chemistry
2 answers:
Advocard [28]3 years ago
5 0

Answer:

C. Compounds can be separated using ordinary physical means.

Explanation:

A compund is a pure substance composed of two or more different atoms chemically bonded to one another. So it can't be separated by physical means and only can be destroyed by chemical means

Sveta_85 [38]3 years ago
3 0

Answer:

C

Explanation:

Compounds cannot be separated by any physical means.

You might be interested in
The British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold.
azamat

Answer:

(a) m_{gold}=7.322g

(b)

V_{gold}=0.379cm^3

V_{copper}=0.122cm^3

(c) \rho _{coin}=15.94g/cm^3

Explanation:

Hello,

(a) In this case, with the given formula we easily compute the mass of gold contained in the sovereign  as shown below:

m_{gold}=\frac{m_{tota}*karats}{24}=\frac{7.988g*22}{24}=7.322g

(b) Now, by knowing the density of gold and copper, 19.32 and 8.94 g/cm³ respectively, we compute each volume, by also knowing that the rest of the coin contains copper:

V_{gold}=\frac{m_{gold}}{\rho_{gold}} =\frac{7.322g}{19.32g/cm^3}=0.379cm^3

m_{copper}=7.988g-7.322g=1.09g\\V_{copper}=\frac{m_{copper}}{\rho_{copper}}=\frac{1.09g}{8.94g/cm^3}  \\\\V_{copper}=0.122cm^3

(c) Finally, the volume is computed by dividing the total mass over the total volume containing both gold and copper:

\rho _{coin}=\frac{m_{total}}{V_{gold}+V_{copper}}=\frac{7.988 g}{0.379cm^3+0.122cm^3}\\  \\\rho _{coin}=15.94g/cm^3

Best regards.

3 0
3 years ago
Read 2 more answers
Who's theory states that atoms are made up of empty space with electrons around a positively charged mass?
emmasim [6.3K]
That would be Rutherford's Theory.
5 0
2 years ago
Determine which law is appropriate for solving the following problem. Carbon dioxide is in a steel tank at 20°C, 10 liters and 1
patriot [66]

<u>Answer:</u>

Law used: Combined Gas Law

<u>Explanation:</u>

We are given the following problem:

Carbon dioxide is in a steel tank at 20°C, 10 liters and 1 atm. What is the pressure on the gas when the tank is heated to 100°C?

To solve this, the most appropriate law that can be used it Combined Gas Law, which is the result of combining the Boyle's law, Charles' law, and Gay-Lussac's law together.

5 0
3 years ago
Read 2 more answers
What element has 81 protons in the nuclei of its atoms?
WITCHER [35]
Thallium has got 81 protons

<u>Have a nice days.......</u>
7 0
2 years ago
Read 2 more answers
An alkanol contains 37.5 carbon
kow [346]

Answer:

Empirical formula is CH₄

Molecular formula = C₂H₈

Explanation:

Mass of carbon = 37.5 g

Mass of hydrogen = 12.5 g

Molecular weight = 32 g/mol

Molecular formula = ?

Empirical formula = ?

Solution:

Number of gram atoms of C = 37.5 g /12g/mol = 3.125

Number of gram atoms of H = 12.5 g / 1.008 g/mol= 12.4

Atomic ratio:

C                 :            H            

3.125/3.125   :       12.4 /3.125

    1                :            4          

C : H : = 1 : 4

Empirical formula is CH₄

Molecular formula:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

n = 32  / 16

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2 ( CH₄)

Molecular formula = C₂H₈

3 0
3 years ago
Other questions:
  • What is a physical property of silver?
    6·2 answers
  • Which atom has the smallest atomic radius? Cs K Li Fr
    7·1 answer
  • Is sewer lice living or nonliving
    15·1 answer
  • (20 POINTS) Easy Chemistry Question
    5·2 answers
  • many cars have gas filled shock absorbers to give the car and it’s occupants a smooth ride. if a four passenger is loaded with f
    14·1 answer
  • The point on a magnet Where magnet effect is strongest is called ​
    15·1 answer
  • The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of ace
    8·1 answer
  • Match the type of atomic bond with the correct definition.Ionic BondMatch the type of atomic bond with the correct definition.Io
    5·1 answer
  • 5 Facts about cell division
    6·1 answer
  • Based on the image below, which item is your limiting reactant?(A) Ice cream scoopB) Cone(C) Cherry
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!