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zaharov [31]
3 years ago
6

Which has a greater density: an extremely small diamond used for industrial purpose such as grinding or a two-carat diamond take

from an engagement ring? Explain. What assumption are you making? 16. Magnesium has a density of 1.74g/cm3.
Chemistry
1 answer:
ExtremeBDS [4]3 years ago
3 0

The question is incomplete, the complete question is shown in the image attached to this answer

Answer:

See explanation

Explanation:

15) The both diamonds- the diamond used as a grinding tool and the two -carat diamond both have the same density because density is an intensive or intrinsic property of a substance. It does not depend on the mass of the substance present.

16) Area of magnesium = Length * width = 0.104 * 10^2 cm * 2.52 * 10^-1 cm  = 2.62 cm^2

Density = mass/area * thickness

Density * area * thickness = mass

thickness = mass/Density * area

thickness = 0.104 g/ 1.74g/cm3 * 2.62  cm^2

thickness = 0.0228 cm

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The energy level necessary to enable a reaction to a cure is called the activation true or false
matrenka [14]
The correct answer is true. It was introduced by Svante Arrhenius that activation energy is minimum amount of energy needed to be supplied or released for a chemical reaction to proceed. It is the energy needed to overcome for a reaction to occur.
3 0
4 years ago
For a single substance at atmospheric pressure, classify the following as describing a spontaneous process, a nonspontaneous pro
Maslowich

Answer and Explanation:

a. Solid melting below its melting point  ⇒ Nonspontaneous

The process is spontaneous <u>above</u> the melting point.

b. Gas condensing below its condensation point  ⇒ Spontaneous

Below the condensation point, the subtance is liquid (it condenses)

c. Liquid vaporizing above its boiling point  ⇒ Spontaneous

A liquid vaporizes at a temperature above the boiling point, it passes from liquido to the gas state

d. Liquid freezing below its freezing point  ⇒ Spontaneous

A liquid freezes at a temperature below its freezeing point, it passes from the liquid to the solid state.

e. Liquid freezing above its freezing point  ⇒ Nonspontaneous

The freezing is spontaneous below the freezing point.

f. Solid melting above its melting point  ⇒ Spontaneous

A solid melts at a temperature above the melting point

g. Liquid and gas together at boiling point with no net condensation or vaporization  ⇒ Equilibrium system

The systems is at equilibrium: there is no net change toward the liquid or towards the gas state.

h. Gas condensing above its condensation point  ⇒ Nonspontaneous

The condensation is spontaneous at a temperature below the condensation point.

i. Solid and liquid together at the melting point with no net freezing or melting ⇒ Equilibrium system

The system is at equilibrium: there is no net change towards the solid or the liquid state.

5 0
3 years ago
Consider this reaction:
nadya68 [22]
11.7 g hope this helps and have a great day
4 0
2 years ago
How many oxygen (O) atoms are involved in this chemical reaction?<br><br> 2Fe(OH)3 — Fe2O3 + 3H20
kenny6666 [7]

Answer:

6 oxygen atoms

Explanation:

From the equation,

2Fe(OH)₃ → Fe₂O₃ + 3H₂O

From the reactant (left hand side) we have 2 moles of Fe(OH)₃ having (2 * 3 = 6) atoms of oxygen and decomposed to give Fe₂O₃ which contains 3 atoms of oxygen and 3 moles of water that also contains 3 atoms of oxygen.

Since the number of oxygen participating in the reaction is independent on the product (not a reversible reaction) then the total number of oxygen atoms participating in the reaction is 6

7 0
4 years ago
what is a molarity of a solution in 9.8 moles of sodium chloride NaCL is dissolved in water to a final volume 3.2 l
Anika [276]
Answer:
molarity = 3.0625 M

Explanation:
Molarity can be calculated using the following rule:
molarity = number of moles of solute / volume of solution

We are given that:
number of moles of solute = 9.8 moles
volume of solution = 3.2 liters

Substitute with the givens in the above equation to get the molarity as follows:
molarity = 9.8 / 3.2
molarity = 3.0625 M

Hope this helps :)
6 0
3 years ago
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