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Dovator [93]
3 years ago
15

Give an example of a change of state that happens in everday life​

Chemistry
2 answers:
exis [7]3 years ago
6 0
Chemical changes take place on the molecular level. A chemical change produces a new substance. Examples of chemical changes include combustion (burning), cooking an egg, rusting of an iron pan, and mixing hydrochloric acid and sodium hydroxide to make salt and water.
Svetach [21]3 years ago
3 0

Answer:

Freezing

Explanation:

When you freeze water in an ice tray to make ice cubes, you are taking a liquid and turning it into a solid. This creates a change of state.

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_______is the division of the cytoplasm at the end of mitosis.
tankabanditka [31]

Answer: D. CYTOKINESIS

Explanation:

Mitosis<em> </em>ends<em> with telophase, or the stage at which the chromosomes reach the poles. ... Telophase is followed by </em>CYTOKINESIS<em>, or the division of the cytoplasm into two daughter </em><em>cells.</em>

6 0
3 years ago
When the concentration of SO2(g) is increased to 1.48 M, the ratio of products to reactants is 1.4. The equilibrium constant for
weeeeeb [17]

Answer:

Towards the products

Explanation:

3 0
3 years ago
20. A compound's empirical formula is C,H,O. If the molecular mass of the compound is
kozerog [31]

Answer:

Just use a text book.. So that you get the concept

6 0
2 years ago
When measuring the volume of a liquid, how would sample size (e.g., using a 10 mL graduated cylinder vs. a 100 mL graduated cyli
devlian [24]

Answer:

Explanation:

From the given information:

The accuracy depends on the internal diameter of the cylinder. The cylinder with the least internal diameter is obviously more precise.

Let's assume 1% is the error of measurement.

Then, to measure 70 mL from 10 mL cylinder

The error = 10 \times \dfrac{1}{100} \times 7

= 0.7 mL

However; for a 100 mL cylinder, the error = 1 mL

Now,

The total volume for 10 mL = (70 + 0.7) = 70.7 mL

The total volume for 100 mL = (70 + 1 ) = 71 mL

Suppose the density (d) is same for both

Then;

the mass of 10 mL = ( d × 70.7) g

the mass pf 100 mL = (d × 71) g

Thus, the mass of 100 mL is greater than that of 10 mL.

5 0
3 years ago
Calculate the ph of a solution that is 0.26 m in hf and 0.12 m in naf.
DochEvi [55]
When a mixture consists of a weak acid, such as HF, and its corresponding salt, NaF, this is an acid buffer. So, we can use the equation as written below:

pH = pKa + log(salt/acid)

For HF, the pKa = 3.17

Thus,
pH = 3.17 + log(0.12/0.26)
<em>pH = 2.83</em>
5 0
3 years ago
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