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Kay [80]
3 years ago
7

Which of these minerals is the hardest mineral that scores a 10 on the mohs scale of hardness?

Chemistry
1 answer:
miskamm [114]3 years ago
7 0

Answer:

C. Diamond

Explanation:

Talc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale.

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Write a balanced net ionic equation for each of the following aqueous metathesis reactions. Classify each reaction as a neutrali
melamori03 [73]

Answer:

See explanation

Explanation:

A. This is a neutralization reaction.

Molecular equation;

HBr(aq) + CsOH(aq) ---------> CsBr(aq) + H20(l)

Complete ionic equation;

H^+(aq) + Br^-(aq) + Cs^(aq) + OH^-(aq)   --------> Cs^+(aq) + Br^- + H20(l)

Net ionic equation;

H^+(aq) + OH^-(aq)   -------->  H20(l)

B. This is a gas forming reaction;

H2SO4(aq) + Na2CO3(aq) ------->Na2SO4(aq) + H2O(l) + CO2(g)

Complete ionic equation;

2H^+(aq) + SO4^-(aq) + 2Na^+(aq) + CO3^2-(aq)  ------->2Na^+(aq) + SO4^-(aq) + H2O(l) + CO2(g)

Net ionic equation;

2H^+(aq) + CO3^2-(aq)  -------> + H2O(l) + CO2(g)

C. This a precipitation reaction

Molecular equation;

CdCl2(aq) + Na2S(aq) ------->CdS(s) + 2NaCl(aq)

Complete ionic equation;

Cd^2+(aq) + 2Cl^-(aq) + 2Na^+(aq) + S^2-(aq) ---------> CdS(s) + 2Na^+(aq) +  2Cl^-(aq)

Net ionic equation;

Cd^2+(aq) +  S^2-(aq) ---------> CdS(s)

8 0
3 years ago
Nuclear reactions involves​
Finger [1]
Nuclear reaction involves two reacting particles a heavy target nucleus and a light bombarding particle and produces two new particles a heavier product nucleus and a lighter ejected particle.
6 0
3 years ago
In order to have a contact force acting on an object, the force:
nydimaria [60]
C. Must be touching the object
5 0
4 years ago
What is the molarity of a solution made from 325.4 g of AlCl3 (MM 133.34 g/mol) to make 500.0 mL?
NISA [10]

Answer : The molarity of a solution is, 4.88 M

Explanation : Given,

Mass of AlCl_3 = 325.4 g

Volume of solution = 500.0 mL

Molar mass of AlCl_3 = 133.34 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Mass of }AlCl_3\times 1000}{\text{Molar mass of }AlCl_3\times \text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{325.4g\times 1000}{133.34g/mole\times 500.0mL}=4.88mole/L=4.88M

Therefore, the molarity of a solution is, 4.88 M

6 0
3 years ago
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What percentage of boys Chose walking
mafiozo [28]

It would of been nice if you were to post your question so others could actually answer it.

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