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yaroslaw [1]
3 years ago
14

Question 3 (Fill-In-The-Blank Worth 3 points)

Chemistry
2 answers:
forsale [732]3 years ago
8 0

Answer:

I THINK 25,000 CG CONVERTS TO 250G

Explanation:

Naddik [55]3 years ago
3 0

Answer : 25000 centigram is equal to 250 grams.

Explanation :

The conversion used for mass from centigram to gram is:

1cg=10^{-2}g

As we are given that the mass 25000 cg. Now we have to determine the mass in grams.

Mass of 'g' :

1cg=10^{-2}g

25000g=\frac{25000g}{1cg}\times 10^{-2}g=250g

Therefore, 25000 centigram is equal to 250 grams.

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Your Answer Will Be Intensive Property
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Does Kinetic energy depend only on an object’s speed and velocity?
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4 0
3 years ago
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When 20 grams of KCIO3, is dissolved in 100 grams of water, the solution can be
tia_tia [17]

Answer:

b. unsaturated .

Explanation:

Hello there!

In this case, according to the given information, it turns out necessary for us to bear to mind the definition of each type of solution:

- Supersaturated solution: comprises a large amount of solute at a temperature at which it will be able to crystalize upon standing.

- Unsaturated solution: is a solution in which a solvent is able to dissolve any more solute at a given temperature.

- Saturated solution can be defined as a solution in which a solvent is not capable of dissolving any more solute at a given temperature.

In such a way, since 20 grams of the solute are less than the solubility, we infer this is b. unsaturated, as 33.3 grams of solute can be further added to the 100 grams of water.

Regards!

6 0
2 years ago
A student listed the characteristics of chemical and nuclear reactions.
lidiya [134]

Answer:

D. It is a chemical reaction because the total mass remains the same when new substances are formed.

Explanation:

A chemical reaction is represented by a chemical equation which show the reactant and products. Reactants are written on left side of arrow while products are written on right side. The number of atoms are remain same however arrangement of atoms is different on both side.

For example:

6H₂O + 6CO₂ + energy  →   C₆H₁₂O₆ + 6O₂

it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen. The number of atoms are same on both side however arrangement of atoms is different.

While in case of nuclear reaction small change in mass take place.

7 0
3 years ago
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Without using Appendix B, predict the sign of ΔS° for(b) KBr(s)→ KBr(aq)
Volgvan

Since the sign is positive, the entropy increased by 88.48 J/K.

Examine the phases of the species present to determine whether a physical or chemical process will cause an increase or decrease in entropy. Keep in mind "Silly Little Goats" to aid you in telling.

[1 Sf K+1 + 1 Sf Br-1 (aq)] ([1Sf(KBr (s))])

[1(102.5) + 1(82.42)] - [1(96.44)] = 88.48 J/K

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8 0
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