Which class of organic compounds contains nitrogen?(I) aldehyde
(2) alcohol
(3) amine
(4) ether

Answers

Answer 1

Answer: (3) amina ........................

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A sample of a substance has these characteristics:• melting point or 9811 K • hard. brittle solid at room temperature • poor conductor of heat and electricity as a solid • good conductor of electricity as a liquid or in an aqueous solution This sample is classified as (1) a metallic element (2) a radioactive element (3) a molecular compound (4) an ionic compound
Please tell if this right!if not please answer with correct answers

You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to completion to form SO₃. If the temperature after the reaction is 25°C and the pressure in the container is 1.65 atm, what is the density of the product gas mixture? Assume ideal behavior.

Answers

The density of the product gas mixture is 5.39 g/L

Explanation:

Given:

Temperature after the reaction = $25^0$ C

Pressure in the container = 1.65 atm

The ideal gas equation PV = nRT

To find: Density of the product gas mixture

Step 1:

Molarity (M) = P/(RT)

$\[M=(P)/(R T)\]$M=\frac{1.65 \mathrm{atm}}{\left(0.08206 (L \cdot a t m)/(m o l . K)\right)(298.15 K)}$$

M = 0.0674 mol/L

Step 2:

The product of the given reaction is $SO_3$ . Its molar mass is

1S x 32.066 g/mol = 32.066 g/mol

3O x 16 g/mol = 48 g/mol

Adding both we get 80.066 g/mol

Therefore the density of the product gas mixture is $0.0674 \frac{{mol}}{L} * \frac{80.066 g}{1 \mathrm{mol}}$

= 5.39 g/L

Is the following hypothesis testable? "If I study, I will get a better grade on a test than if I do not study."

Answers

Answer:

Yes

Explanation:

Yes, you can test this by comparing grades you received when you studied and when you did not study

On the periodic table how many periods are there and how many columns are there

Answers

There are seven periods with eighteen columns in the periodic table.

Why does table salt dissolve more rapidly than rock salt

Answers

because in rock salt, the molecules are packed together and they take longer time to separate and dissolve. As for table salt the molecules are less packed together and take less time to dissolve. Think it like this. The more packed or tightly the substance/object is, the longer it will take for the object to dissolve. The less packed the object/substance is the faster it takes to dissolve. Hope this helped :)

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Salt seems to disappear when it is poured into water. Use the terms mixture,solution, and dissolve to explain what happens

Answers

To solve this we must be knowing each and every concept related to solution. Therefore, the term used for the given salt in water is solution.

What is solution?

A solution is a uniform mixing comprising two or more parts. It possesses particle-level homogeneity. People usually conceive of it as a liquid containing a solid, liquid, or gas dissolved inside it. This is not totally correct.

The component of such a solution that absorbs the other component is referred to as the solvent. The majority of the solution is made up of a solvent. A sugar solution in water, for example, is solid inside the liquid. Sugar is indeed the solute in this case, while water is indeed the solvent. The term used for the given salt in water is solution.

Therefore, the term used for the given salt in water is solution.

To know more about solution, here:

brainly.com/question/10829073

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The salt desolves into the water which forms a solution which is called a mixture.

!!!!HELP ASAP 10 points!!!Which of the following families contains liquids, solids, and gases?A. The alkali metals
B. The noble gases
C. The halogens
D. The alkaline earth metals