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valkas [14]
3 years ago
6

A specific type of physical change is a ________ change.

Chemistry
2 answers:
Juliette [100K]3 years ago
7 0
C Size
A change of size in any object is a physical change. So, a specific type of physical change is a SIZE change.
Roman55 [17]3 years ago
3 0
<span>A specific type of physical change is a ________ change

</span><span>D. phase
</span><span>
Example of Phase change is changing from Solid to liquid and Liquid to gas.

It is a physical change because the chemical nature of the compound involved is still the same. There is no introduction of new elements into the compound.
</span>
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What is true about a saturated solution
ipn [44]
<span>The rate of crystallizing is equivalent to the rate of dissolving.</span>
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4 years ago
How is a Mixture different from a Compound<br> 30 points
barxatty [35]

Answer:

A substance that is comprised of more than one kind of atom reinforced together. Blend: A mix of at least two components or mixes that have not responded to bond together; each part in the combination holds its own properties.

Explanation:

3 0
3 years ago
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A chemist working for Udensi industries wants to create a new ink for tattoos and cosmetics. Determine the theoretical yield of
leva [86]

Answer:

35.36 g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

8Fe + S₈ —> 8FeS

Next, we shall determine the mass of Fe that reacted and the mass of FeS produced from the balanced equation. This can be obtained as follow:

Molar mass of Fe = 56 g/mol

Mass of Fe from the balanced equation = 8 × 56 = 448 g

Molar mass of FeS = 56 + 32 = 88 g/mol

Mass of FeS from the balanced equation = 8 × 88 = 704 g

SUMMARY:

From the balanced equation above,

448 g of Fe reacted to produce 704 g of FeS.

Finally, we shall determine the theoretical yield of FeS as follow:

From the balanced equation above,

448 g of Fe reacted to produce 704 g of FeS.

Therefore, 22.5 g of Fe will react to produce = (22.5 × 704)/448 = 35.36 g of FeS.

Thus, the theoretical yield of FeS is 35.36 g

3 0
3 years ago
6. For which movement of earth materials is gravity not the main force?
sineoko [7]
B moisture evaporating from an ocean
6 0
3 years ago
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A given reaction has an activation energy of 24.52 kj/mol. at 25°c, the half-life is 4 minutes. at what temperature will the hal
igor_vitrenko [27]
According to half life equation:

T(1/2) = ㏑2 / K1

when the T(1/2) = 4 min * 60 = 240 sec

by substitution:

240 = 0.6931 / K1

K1 = 2.9 x 10^-3

when the second T(1/2) = 20 sec, so to get K2:

T(1/2) = 0.6931 / K2

by substitution:

20 = 0.6931 / K2

∴K2 = 3.4 x 10^-2

so, we can get T2 by using this formula:

㏑ (K2/K1) = Ea/R (1/T1 - 1/T2)

by substitution:

㏑(3.4 x 10^-2)/(2.9 x 10^-3) = (24520 / 8.314) (1/298 - 1/T2)

∴ T2 = 396.7 K

         = 396.7 - 273 = 123.7 °C 



4 0
3 years ago
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