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3 years ago

As the density of a substance increases, the volume of a given mass of that substance__.

Chemistry

2 answers:

WARRIOR [948]3 years ago

3 0

As the density of a substance increases the volume of a given mass of the substance decreases

Diano4ka-milaya [45]3 years ago

3 0

Answer : The correct option is, (C) decreases

Explanation :

As we know that the density is measured as the mass of substance divided by the volume of substance. The S.I unit of density is, kilogram per cubic meter or $Kg/m^3$

Formula for density :

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

That means the density is directly proportional to the mass of the substance and inversely proportional to the volume of the substance.

As the volume of substance decreases, the density of a substance will be increases and volume of substance increases, the density of a substance will be decreases.

Hence, the correct option is, (C) decreases

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A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop in 7.5 seconds? What is the cars acc

Marianna [84]

Answer:

The acceleration is: $4m/s^2$

Explanation:

Given

$u = 30.0m/s$ --- The initial velocity

$t = 7.5s$ --- time

$v = 0m/s$ -- The final velocity

Required

Determine the acceleration

To do this, we make use of the first equation of motion

$v = u - at$

We used negative because the car was coming to stop.

This gives:

$0 = 30 - 7.5 * a$

$0 = 30 - 7.5a$

Collect like terms

$7.5a = 30$

Solve for a

$a = \frac{30}{7.5}$

$a = 4m/s^2$

6 0

2 years ago

Calculate the molarity of a 2.43 mol aqueous NaCl solution with a density of 2.00 g/mL.

anygoal [31]

Answer:

You need to add more points people will not answer if its this low

Explanation:

3 0

2 years ago

the symbol for xenon (xe) would be a part of the noble gas notation for the element antimony. cesium.

trapecia [35]

The symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

For writing the electronic configuration of any element by using the preceding noble gas configuration, we simply use the symbols of noble gas belongs to the previous period of that particular elements. We can't use the symbol of noble gas of same period from which the element belong.

A is the wrong option because the noble gas in the preceding period to the period from which antimony belongs is krypton.

The actual electronic configuration of antimony is as follow:

[Kr] 4d10 5s2 5p3

B is correct option because the noble gas in the preceding period to the period from which Cesium belongs is Xenon.

The actual electronic configuration of Cesium is as follow:

[Xe] 6s1

Thus, we concluded that the symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

learn more about Noble gas:

brainly.com/question/2094768

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8 0

1 year ago

If an object has more positive charges than negative charges, the object has an overall?

guapka [62]

It will have an overall positive charge.

6 0

2 years ago

Antacids work to relieve stomach acids because of which of the following types of reactions?

Anastaziya [24]

Answer: The correct answer is Option B.

Explanation:

Decomposition is a type of chemical reaction in which larger compound breaks down into two or more smaller compounds.

$AB\rightarrow A+B$

Double displacement reactions is defined as the chemical reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

Synthesis reaction is a type of reaction in which two or more smaller compounds combines to form a single large compound.

$A+B\rightarrow AB$

Single displacement reaction is a type of reaction in which a more reactive metal displaces a less reactive metal from its chemical reaction.

$A+BC\rightarrow AC+B$

In stomach, an acid is present known as hydrochloric acid and to neutralize its effect, antacid is taken which has $CaCO_$ as a component.

The reaction between HCl and $CaCO_3$ is a type of neutralization reaction and it is a type of double displacement reaction.

The equation between the two follows:

$CaCO_3+HCl\rightarrow CaCl_2+H_2O+CO_2$

Hence, the correct answer is Option B.

4 0

2 years ago