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polet [3.4K]
3 years ago
14

The state of matter in which a material has definite shape and definite volume is the

Chemistry
1 answer:
goldenfox [79]3 years ago
7 0

Answer:

It's a solid.

Explanation:

Solids never change their shape as opposed to gases and liquids. This is because their molecules are tightly packed together. Since all solids have a definite shape, it's volume will also be definite.

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Which is a diatomic molecule?<br> A. Ar<br> B. CO<br> C. CO2<br> D. NaCl
aleksley [76]
NaCI is the answer, in what my teacher taught me. Hope I helped :)
5 0
3 years ago
Which of these metals is the MOST reactive?<br> Lithium <br> Copper<br> Gold <br> Calcium
lutik1710 [3]

Answer:

The correct answer to you your question is Potassium

Explanation:

Potassium is the most reactive

7 0
3 years ago
What physical effect can change the boiling point of a substance?
Artemon [7]
Pressure can affect the boiling pressure of a substance

as when pressure increases the particles are closer together and so require more energy to boil therefore increasing the substances boiling point 

hope that helps

5 0
3 years ago
Read 2 more answers
If 15.6 grams of copper (ii) chloride react with 20.2 grams of sodium nitrate how many grams of sodium chloride can be formed? W
olasank [31]

Answer:

- 13.56 g of sodium chloride are theoretically yielded.

- Limiting reactant is copper (II) chloride and excess reactant is sodium nitrate.

- 0.50 g of sodium nitrate remain when the reaction stops.

- 92.9 % is the percent yield.

Explanation:

Hello!

In this case, according to the question, it is possible to set up the following chemical reaction:

CuCl_2+2NaNO_3\rightarrow 2NaCl+Cu(NO_3)_2

Thus, we can first identify the limiting reactant by computing the yielded mass of sodium chloride, NaCl, by each reactant via stoichiometry:

m_{NaCl}^{by\ CuCl_2}=15.6gCuCl_2*\frac{1molCuCl_2}{134.45gCuCl_2} *\frac{2molNaCl}{1molCuCl_2} *\frac{58.44gNaCl}{1molNaCl} =13.56gNaCl\\\\m_{NaCl}^{by\ NaNO_3}=20.2gNaNO_3*\frac{1molNaNO_3}{84.99gNaNO_3} *\frac{2molNaCl}{2molNaNO_3} *\frac{58.44gNaCl}{1molNaCl} =13.89gNaCl

Thus, we infer that copper (II) chloride is the limiting reactant as it yields the fewest grams of sodium chloride product. Moreover the formed grams of this product are 13.56 g. Then, we take 13.56 g of sodium chloride to compute the consumed mass sodium nitrate as it is in excess:

m_{NaNO_3}^{by\ NaCl}=13.56gNaCl*\frac{1molNaCl}{58.44gNaCl}*\frac{2molNaNO_3}{2molNaCl} *\frac{84.99gNaNO_3}{1molNaNO_3}=19.72gNaNO_3

Therefore, the leftover of sodium nitrate is:

m_{NaNO_3}^{leftover}=20.2g-19.7g=0.5gNaNO_3

Finally, the percent yield is computed via:

Y=\frac{12.6g}{13.56g} *100\%\\\\Y=92.9\%

Best regards!

6 0
3 years ago
Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minu
Andrei [34K]

In order to calculate average speed we will calculate the total distance in meters traveled by cindy.

Distance = 2 Km

1 km = 1000m

So distance in meters = 2000 m

Then let us calculate the total time taken by cindy to cover these 2000 meters

Total time in minutes = 2 + 4 + 1 + 3 = 10 minute

Average speed = total distance  / total time

Average speed = 2000 m / 10 minutes

average speed = 200 m / min

7 0
3 years ago
Read 2 more answers
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