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Zarrin [17]
4 years ago
9

Did the microscope revolutionize surgery

Chemistry
1 answer:
mojhsa [17]4 years ago
8 0

Answer:

Yes

Explanation:

You might be interested in
Round 23,455 into 4 significant figures: ______ cm 23.46 <br> 23.40 <br> 23.45
zheka24 [161]

Answer:

23.46

Explanation:

3 0
4 years ago
What are the differences between amorphous and crystalline solids? Give an example of each.
Eddi Din [679]

Answer: orderly arrangement of particles

Explanation:

In a crystaline solid, the particles that compose the solid are arranged or packed in an orderly manner to form a three dimensional crystal lattice with a defined structure. Sodium chloride is a crystaline solid.

In an amorphous solid, the particles that compose the solid aren't arranged in an orderly manner hence the solid tends to be brittle, e.g glass

7 0
4 years ago
If the energy difference between two electronic states is 214.68 kJ / mol , calculate the frequency of light emitted when an ele
atroni [7]

{\qquad\qquad\huge\underline{{\sf Answer}}}

Here we go ~

Energy difference btween the two electronic states can be expressed as :

{ \qquad \sf  \dashrightarrow \: \Delta E = h\nu}

[ h = planks constant,{\: \nu }= frequency ]

\qquad \sf  \dashrightarrow \:214.68 = 39.79 \times 10 {}^{ - 14}  \times  \nu

\qquad \sf  \dashrightarrow \: \nu =  \cfrac{214.68}{39.79 \times 10 {}^{ - 4} }

\qquad \sf  \dashrightarrow \: \nu =  \cfrac{214.68}{39.79 }  \times 10 {}^{14}

\qquad \sf  \dashrightarrow \: \nu  \approx  5.395 \times10 {}^{14}  \:\:hertz

5 0
2 years ago
Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points from highest to l
muminat

Answer:

NH4Cl > Li2SO4 > CoCl3

Explanation:

Let us recall that the freezing point depression depends on the molality of the solution and the number of particles present.

Let us also recall that freezing point depression is a colligative property. It depends on the number of particles present in solution.

Usually, the more the number of particles present, the lower the freezing point. Hence, NH4Cl which has only two particles will have the highest freezing point while CoCl3 which has four particles will have the lowest freezing point.

4 0
3 years ago
In its aqueous solution, 99.9% of a substance dissociates to release hydronium ions. Which of the following is true for the subs
olga2289 [7]
The answer is C. It’s a strong acid
3 0
3 years ago
Read 2 more answers
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