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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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Which of the following is not a chemical property?
aniked [119]

a, c, and d are all chemical properties because they give information about how a substance will behave in the given reaction, and can’t be found without the substance undergoing some sort of chemical reaction. b, on the other hand, is a physical property—it can be determined without changing the substance’s chemical composition.

3 0
3 years ago
Read 2 more answers
If an atom has 15 protons, 14 neutrons, and 16 electrons, what is the atom's electrical charge? A. -2 B. +1 C. +3 D. -1
Amiraneli [1.4K]

The electrical charge of an atom having 15 proton, 14 neutrons and 16 electrons is -1. The correct option is D.

What is an atom?

An atom is the smallest unit of any matter which comprises of central nucleus and electrons revolving around the nucleus in definite energy shells. The atom is made up of protons, neutrons and electrons.

The electrical charge of an atom can be calculated as,

Charge of an atom = number of protons - number of electrons

Charge = 15 - 16 = -1.

The neutrons are neutral and do not contribute to the charge, the protons are positively charged and electrons are negatively charged in an atom.

Therefore, the charge of an atom with 15 protons, 14 neutrons and 16 electrons is -1. The correct answer is option D.

To learn more about atom click on the given link brainly.com/question/6258301

#SPJ9

3 0
2 years ago
PLS HELP QUICKLY I WILL GIVE 79 POINTS FOR YALL TO ANSWER THIS QUESTION!
Daniel [21]

Answer:

Magnesium and strontium

Explanation:

11 protons and 11 electrons, 12 neutrons.

The atomic number of sodium is 11, therefore the number of electrons and protons are 11. The atomic mass is 23, and to find neutrons you need to subtract the atomic number from the atomic mass, therefore the number of neutrons are 12.

4 0
4 years ago
The invention of the ____ allows scientists to learn about cells.
zavuch27 [327]
The Microscope allowed scientists to learn about cells.
6 0
3 years ago
How much heat is released when 27.6 g P C l subscript 3 cools from 83.1 °C to 55.6 °C? (The specific heat of P C l subscript 3 i
Paul [167]

Answer: Thus 663 J of heat  is released when 27.6 g PCl_3 cools from 83.1 °C to 55.6 °C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat released = ?

m = mass of substance = 27.6 g

C = specific heat capacity = 0.874J/g^0C

Initial temperature= T_i = 83.1^0C

Final temperature  = T_f  = 55.6^0c

Change in temperature ,\Delta T=T_f-T_i=(55.6-83.1)^0C=-27.5^0C

Putting in the values, we get:

Q=27.6g\times 0.874J/g^0C\times -27.5^0C=-663J

As the value of q is negative, it means the heat has been released and it is 663J

7 0
3 years ago
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