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3 years ago

Write at least 5 different sentences each adjective describes: crystal___, soluble_, hard_, solid_,

Chemistry

1 answer:

rewona [7]3 years ago

3 0

Answer:

Definite shape, definite volume, definite melting point, high density, incompressibility, and low rate of diffusion.
The most obvious physical properties of a liquid are its retention of volume and its conformation to the shape of its container.
When a liquid substance is poured into a vessel, it takes the shape of the vessel, and, as long as the substance stays in the liquid state, it will remain inside the vessel.
There are four types of crystalline solids: ionic solids, molecular solids, network covalent solids and metallic solids.
There are two types of liquid-liquid mixtures. They are: Homogeneous Liquid-Liquid Mixture. This is a type of liquid-liquid mixture whereby the two substances mix completely to from a single substance.

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A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solutio

Zigmanuir [339]

Answer: The concentration of original sulfuric acid solution is 1.62 M

Explanation:

Let the original concentration of sulfuric acid be 'x' M

To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated sulfuric acid solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted sulfuric acid solution

We are given:

$M_1=xM\\V_1=25.00mL\\M_2=?M\\V_2=250.0mL$

Putting values in above equation, we get:

$x\times 25.00=M_2\times 250.0\\\\M_2=\frac{x\times 25.0}{250}=\frac{x}{10}$

Now, to calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $H_2SO_4$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=2\\M_1=\frac{x}{10}M\\V_1=10.00mL\\n_2=1\\M_2=0.1790M\\V_2=18.07mL$

Putting values in above equation, we get:

$2\times \frac{x}{10}\times 10.00=1\times 0.1790\times 18.07\\\\x=\frac{1\times 0.1790\times 18.07\times 10}{2\times 10.00}=1.62M$

Hence, the concentration of original sulfuric acid solution is 1.62 M

5 0

4 years ago

The purpose of selective breeding is to

Ira Lisetskai [31]

Answer:

The purpose of selective breeding is to develop livestock whose desirable traits have strong heritable components and can therefore be propagated

6 0

3 years ago

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H3C6H507(aq) + 3NaHCO3(aq) - Na3C6H5O7(aq) + 3C02(g) + 3__

zavuch27 [327]

Answer: 3 H₂O

Explanation:

This is an example of a common chemical reaction

ACID + CARBONATE --> SALT + WATER + CARBON DIOXIDE which implires

CITRIC ACID + SODIUM BICARBONATE ----> SODIUM CITRATE + WATER + CARBON DIOXIDE .

The full chemical equation is given by

H3C6H5O7(aq) + 3NaHCO3(aq) --> Na3C6H5O7(aq) + 3CO2(g) + 3H2O(l)

The reaction produces a fizz due to the release of carbon dioxide which can be also seem when an Alka-Seltzer® tablet is dissolved in water.

6 0

4 years ago

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An isotope, x, of a particular element has an atomic number of 16 and a mass number of 34. therefore: select one:

never [62]

Number protons is what determines the element.
16 protons determines that the substance is sulphur.

The number of neutrons can vary according to the isotope. The mass number is the total count of neutrons and protons, so sulphur with a mass number of 34 has 34-16=18 neutrons.

32.065 is the weighted average of the atomic weights of different isotopes, so does not apply to a single isotope.

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3 years ago

Please help me with this, it's due in 7 minutes. I don't quite get it.

victus00 [196]

Answer:

Healthy ecosystems have an energy source which comes from the sun

-hope this helps! :)

Explanation:

8 0

3 years ago

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Write at least 5 different sentences each adjective describes: crystal_____, soluble_____, hard_________, solid_______,

Write at least 5 different sentences each adjective describes: crystal___, soluble_, hard_, solid_,