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maria [59]
3 years ago
7

An object has a mass of 4 grams and a volume of 2 cm^3.what is the density of the object?

Chemistry
2 answers:
suter [353]3 years ago
6 0

Answer:

Density (ρ) = 2g/cm³

Explanation:

Mass = 4g

Volume = 2cm³

Density (ρ) of an object = mass of object / volume it occupies

ρ = mass / volume

ρ = 4 / 2

ρ = 2g/cm³

The density of the object is 2g/cm³

stellarik [79]3 years ago
3 0

Answer:

2.0 grams per cubic centimeter

Explanation:

(You can refer to the DMV triangle to help you solve this!)

Density = Mass/Volume

Density = 4.0g/2.0cm3

Density = 2.0g/cm3

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

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How would you find 8m of carbon chloride using 87.9g carbon chloride
vaieri [72.5K]

Answer:

Explanation:

I want to believe that your question is how to find an 8M carbon chloride solution using the given mass of the compound.

The problem clearly identifies with concentration of a substance. Molarity is one of the ways of expressing concentration. It is the amount of solute of a substance per volume of solution.

     Molarity  = \frac{number of moles of solute}{Volume of solution}

To find the right mix that will give us 8M carbon chloride solution, let's explore how to figure out the appropriate volume.

Clearly given is the mass of the compound, convert to number of moles.

  Number of moles  = \frac{mass}{molar mass}

            Molar mass of carbon chloride(CCl₄)  = 12 + 4(35.5)  = 154g/mol

Number of moles  = \frac{87.9}{154}   = 0.57moles

To find the volume;

            8    =    \frac{0.57}{v}

            volume = 0.071L or 71mL

7 0
3 years ago
How does a molecular substance differs from a ionic substance ?
jolli1 [7]
Molecular is existent due to being made out of molecules, and thus taking up space until a container cannot hold more.
Ionic substances are a little different they are made out of energy, thus taking up only the amount of energy a certain area can handle. Ionic substances also will show motion of energy as well.

4 0
4 years ago
The diagram below shows a longitudinal wave at one instant in its motion. Each oval represents a particle acted on by the ener t
Anton [14]

Answer:

the first line

Explanation:

A rarefaction is a region in a longitudinal wave where the particles are furthest apart. ... The region where the medium is compressed is known as a compression and the region where the medium is spread out is known as a rarefaction.

use this picture as a reference:

8 0
3 years ago
Read 2 more answers
What is the velocity of a 74.8kg jogger with a kinetic energy of 1085.0 j?
bonufazy [111]

Answer:

5.386m/s

Explanation:

kinetic energy is K = 1/2 *m*v^2

Velocity:

v = (2K / m) ^(1/2)

v = (2 * 1085 (kg*m^2 /s^2) /74.8kg) ^ (1/2)

v = 5,386m/s

(Remember:

N = kg * m^2 / s^2

()^1/2 is equal to square root)

8 0
3 years ago
How many liters of O2 gas will be produced at STP from 4 moles of KC1O3
quester [9]

Answer:

V = 134.5 L

Explanation:

Given data:

Number of moles of KClO₃ = 4 mol

Litters of oxygen produced at STP = ?

Solution:

Chemical equation:

2KClO₃  →  2KCl   + 3O₂

Now we will compare the moles of KClO₃ with oxygen.

                    KClO₃        :           O₂

                        2            :           3

                        4            ;          3/2×4 = 6 mol

Litters of oxygen at STP:

PV = nRT

V = nRT/P

V = 6 mol × 0.0821 atm.L/mol.K × 273 K / 1atm

V = 134.5 L / 1

V = 134.5 L

5 0
3 years ago
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