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Alisiya [41]
3 years ago
10

4.1.2 Quiz: What is scientific notation?

Chemistry
1 answer:
Eddi Din [679]3 years ago
3 0

Answer:

D. Scientific notation is a way of writing large and small numbers

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How many moles of carbon are in 7.87*10^7
elena-14-01-66 [18.8K]
Well one mole of stuff, any stuff, including carbon dioxide, specifies
6.022
×
10
23
individual items of that stuff.
Explanation:
And thus we work out the quotient:
7.2
×
10
25
⋅
carbon dioxide molecules
6.022
×
10
23
⋅
carbon dioxide molecules
⋅
m
o
l
−
1
≅
120
⋅
m
o
l

carbon dioxide
.
This is dimensionally consistent, because we get an answer with units
1
m
o
l
−
1
=
1
1
mol
=
m
o
l
as required.
6 0
3 years ago
Describe how each way to separate a mixture works Magnetic attraction: Evaporation: Filtration: Distillation:
jeka94

Answer:

Evaporation is great for separating a mixture (solution) of a soluble solid and a solvent. The process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue. ... This method is best for separating a liquid from a solution.

Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )

Magnetic separation is the process of separating components of mixtures by using magnets to attract magnetic materials. ... Due to the magnets, magnetic particles are being drifted by the movement of the drums. This can create a magnetic concentrate (e.g. an ore concentrate).

Explanation:

That's your answer.

5 0
3 years ago
Convert 1.50μm2 to square meters
IrinaVladis [17]
1 micro meter = 10^{-6}  meters
1 μm ^2 = 1 μm*1μm = 10^{-6} *10^{-6} =  10^{-12} meters

1.5 μm^2 = 1.5 * 10^{-12} meters

μm^2 is a unit for surface. First you want to convert μm to meters which is unit for length and if you multiply units for length you get unit for surface.
4 0
3 years ago
20)
anyanavicka [17]

Answer:

D

Explanation:

7 0
3 years ago
If you heat the cup of soup in the microwave to make it boil. Will it have a higher total kinetic energy than the bowl of soup?
Paha777 [63]

No, The kinetic energy depends upon the number of particles motion. The hot bowl of soup will have greater number of particles in motion and it will contain more kinetic energy than the cup of soup.

8 0
3 years ago
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