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
seropon [69]
3 years ago
15

What is the hardest mineral listed here? A. quartz B. calcite C. gypsum D. corundum

Chemistry
2 answers:
krok68 [10]3 years ago
4 0

Answer:D. corundum

Explanation:

Corundum is a hard mineral. It is tough and stable in nature. It is the hardest mineral after diamond. It remains unaffected by the treatment of acids and environmental agents. Translucent brown color corundum is commonly found in nature.

a_sh-v [17]3 years ago
3 0
The answer would be D. The only minerals harder than corundum is diamond.
You might be interested in
Please help me need it fast ​
Schach [20]

Answer:

Do you need 3 ways or just one?

1. Temperature.

2. Pressure.

3. Polarity.

Explanation:

Eh hope these help, Idr understand the question but those are 3 ways to increase the solubility of a solid in water.

5 0
2 years ago
8. Thermal Energy is?
Burka [1]

Thermal energy is the sum of the kinetic and potential energy of all the particles in an object. The figure shows that if either potential or kinetic energy increases, thermal energy increases.

hope it really helps...!!!

4 0
2 years ago
What is a serial dilution?
lord [1]

A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion.

4 0
2 years ago
Enter a balanced equation for the reaction between solid silicon dioxide and solid carbon that produces solid silicon carbide an
givi [52]

Answer:

SiO2(s) + 3C(s)  ------> SiC(s) + 2CO(g)

Explanation:

The formula for silicon oxide is SiO2 and carbon is C. silicon carbide is SiC

and carbon monoxide is CO.

An arrow is always used to separate the reactants (left) and products (right).

A balanced equation must contain equal number of atoms in each side of the equation.

For example in the equation above, there are 1 atom of silicon appears on each side; 2 atoms of oxygen and three atoms of carbon.

3 0
3 years ago
How many PO43? ions are in a mole of K3PO4?
adoni [48]

K₃PO₄ → 3K⁺ (aq) + PO₄³⁻(aq)

One mole of PO₄³⁻ ion gets dissociated from one mole of K₃PO₄

As per the definition of Avogadro's number, 1 mole = 6.022 x 10²³ ions

One mole of PO₄³⁻ ions x  (6.022 x 10²³ ions/ 1 mole of PO₄³⁻ ions )

= 6.022 x 10²³ ions

Therefore , there are 6.022 x 10²³ PO₄³⁻ ions in a mole of K₃PO₄.

7 0
2 years ago
Other questions:
  • Explain the relationship between photosynthesis and cellular respiration.<br> 2 point
    6·1 answer
  • What type of wave can actually reach Earth's inner core
    9·1 answer
  • A volume of 90.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
    10·1 answer
  • An example of a physical property of an element is the element’s ability to(1) react with an acid(2) react with oxygen(3) form a
    5·2 answers
  • If there are 3 moles of hydrogen, 6 moles of oxygen, and 9 moles of helium in a 10 L vessel at 27°C, the total pressure of the g
    10·1 answer
  • An atom that has 13 protons and 15 neutrons is element
    13·1 answer
  • Wwwwwwwwwwwwwwwwwwwwwwwweweewewwewweewweeweeweeweweweeeweew
    14·1 answer
  • Oi oi oi oi ewin <br> .................
    10·1 answer
  • Perform each conversion <br>5.88 dL to liters <br><br>​
    11·1 answer
  • Cuales diferencias tienen magnitudes y tiempo
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!