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3 years ago

A substance with a definite shape and volume is a _______phase of matter.

Chemistry

2 answers:

Mariulka [41]3 years ago

8 0

It would be considered a solid

Luden [163]3 years ago

8 0

Answer:

solid

Explanation:

Solid involves the state in which matter has a definite shape and volume. In that respect, solids can be crystalline, which means that the atoms or molecules are arranged in a repeating pattern of rows, like iron, diamond and ice. Solids can also be amaorphous, which are constituted by atoms or molecules in no organized pattern, such as rubber and wax.

You might be interested in

What is the mass, in grams, of a pure iron cube that has a volume of 3.80 cm?

Trava [24]

Answer:

2.66 g of Fe, can be obtained from the reaction

Explanation:

Let's think the reaction:

2Fe₂O₃ + 6CO → 4Fe + 6CO₂

Ratio is 2:4, so If i have x moles of iron (III) oxide, I will produce the double of moles of Fe.

Mass / Molar mass = Mol

3.80 g / 159.7 g/m = 0.0237 moles

0.0237 moles . 2 = 0.0475 moles

Molar mass Fe = 55.85 g/m

Mol . Molar mass = Mass → 0.0475 m . 55.85 g/m = 2.66 grams

Explanation:

4 0

3 years ago

Convert 732.0 mmHg to atm

enot [183]

Answer:

The answer is

Explanation:

To solve the question we use the following conversion

That's

1 mmHg $\cong$ 0.0013 atm

So we have

If 1 mmHg $\cong$ 0.0013 atm

Then 732 mmHg will be

732 × 0.0013 atm

We have the final answer as

Hope this helps you

5 0

4 years ago

Which of the following solutions will have the highest electrical conductivity?. A.0.065M Na3PO4. B.0.075M (NH4)2CO3. C.0.10M Li

Galina-37 [17]

Answer: option A, 0.065 M Na₃PO₄

Explanation:

1) First, notice that the solutes of every solution are ionic compounds with a high dissociation constant.

2) Then, you can assume full dissociation.

3) Also, lacking other information, and since conductity is the measure of the motion of charges (ions in the case of electrolytes), you can assume that for those solutions is valid the statement that "in many cases, conductivity is linked directly to the total dissolved solids".

4) Then, calculate the number of ions dissolved in each case to conclude which is the highest one and, with that, predict which electrolyte will conduct more electricity. Assume 1 liter for all of them, and use

M = n / V ⇒ n = M × V ⇒ n = M × 1 liter

5) A.0.065M Na₃PO₄.

Na₃PO₄ → 3Na⁺ + PO₄³⁻

1 mol → 4 moles

0.065 mol → 4×0.065 moles = 0.26 moles

6) B.0.075M (NH₄)₂CO₃.

(NH₄)₂CO₃ → 2NH₄⁺ + CO₃²⁻

1 mol → 3 moles

0.075 mol → 3×0.075 mol = 0.225 mol

7) C.0.10M LiBr.

LiBr → Li⁺ + Br⁻

1 mol → 2 mol

0.10 mol → 2×0.10mol = 0.20 mol

8) D.0.10M NaI.

NaI → Na⁺ + I⁻

1 mol → 2 mol

0.10 mol → 2×0.10 mol = 0.20 mol

9) E.0.10M KF.

KF → K⁺ + F⁻

1 mol → 2 mol

0.10 mol → 2×0.10 mol = 0.20 mol

10) Therefore the solution with more ions is the 0.065 M Na₃PO₄, with 0.26 moles, and that is the predicted solution with the highest electrical conductivity.

5 0

4 years ago

Ted and Emily played a mixed doubles tennis match against Jack and Brenda. In the second match, Ted and Brenda played against Ja

timofeeve [1]

Answer:

Double replacement.

Explanation:

Chemical Reactions => Double Replacement Reactions.

Let's call Ted as T, Emily as E, Jack as J, and Brenda as B.

In the first match, we have T and E playing against J and B; and in the second match, we have T and B playing against J and E. We can state a 'reaction' of this if the first match would be the reactants and the second match the products:

$TE+JB\rightarrow TB+JE.$

You can note that this is similar to a double replacement reaction, remember that a double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement reaction is: