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Eddi Din [679]
4 years ago
11

If two objects have the same mass, what must be true? choose the correct answer A. They have the same volume B. They are made of

the same material C. they contain the same amount of matter D. They have the same density
Chemistry
2 answers:
Nataly_w [17]4 years ago
7 0
C. Mass is kind of like a measurement of matter.
ankoles [38]4 years ago
3 0

Answer: Option (C) is the correct.

Explanation:

Density is known as the amount of substance present in a liter.

Mathematically,     Density = \frac{mass}{volume}

Therefore, it means density is directly proportional to mass of a substance and inversely proportional to the volume of the substance.

Hence, density depends on both the factors, that is, mass and volume.

Whereas mass present in a substance means the amount of matter present in it.

Hence, we can conclude that if two objects have the same mass, then it is true that they contain the same amount of matter.

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You have 500,000 atoms of a radioactive substance. After 2 half-lives have past, how many atoms remain?
Aleonysh [2.5K]

Answer:

125000

Explanation:

Because it is halved and halved again.

3 0
2 years ago
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Name two events involving electrons that can result in the formation of chemical bonds between atoms.
Alona [7]

Explanation:

Two events involving electrons are gain and loss of electrons.

When there is gain or loss of electrons between two atoms then it results in the formation of ionic bond.

Whereas when there is sharing of electrons between two atoms then it results in the formation of covalent bond.

Therefore, the chemical bonds formed can be ionic or covalent bonds.

6 0
3 years ago
Does anyone have any idea what this means lol
miv72 [106K]

Answer:

29.42 Litres

Explanation:

The general/ideal gas equation is used to solve this question as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K

According to the information provided in this question;

mass of nitrogen gas (N2) = 25g

Pressure = 0.785 atm

Temperature = 315K

Volume = ?

To calculate the number of moles (n) of N2, we use:

mole = mass/molar mass

Molar mass of N2 = 14(2) = 28g/mol

mole = 25/28

mole = 0.893mol

Using PV = nRT

V = nRT/P

V = (0.893 × 0.0821 × 315) ÷ 0.785

V = 23.09 ÷ 0.785

V = 29.42 Litres

6 0
3 years ago
What will occur when the trough of Wave A overlaps the crest of Wave B?
JulsSmile [24]

Answer:

Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.

Explanation:

Destructive interference has lesser intensity.

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2 years ago
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PLEASE HELP WILL GIVE BRAINLIEST!!!
IrinaVladis [17]

Answer:

The light emitted by a light bulb is a form of radiation that occurs when the filament heats up and its thermal emission gains enough energy to move into the visible spectrum.

Explanation:

Light bulbs contain a filament which is heated up electrically. When this filament is heated up,energy in the form of heat is imparted to the electrons in the filament.

This thermal excitation of electrons ultimately leads to emission of light in the viable spectrum. This light is now radiated through a light bulb.

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3 years ago
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