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8_murik_8 [283]
2 years ago
9

In this experiment, you will measure mass and volume of various sport balls, both regularly shaped ball and irregularly shaped.

What property of an object can you determine using mass and volume? In the space below, write a scientific question that you will answer by doing this experiment.
Chemistry
2 answers:
Marina86 [1]2 years ago
5 0
You can measure density. Question options: Are mass and volume related? How does a mass or volume change affect density?
kicyunya [14]2 years ago
4 0

Answer: Density can be measured using mass and volume.

Explanation:

Mass is defined as the actual matter which an object comprises.

Volume is defined as the amount of space occupied by the object measured in cubic units.

The relation between these two quantities defines a property which is known as density.

Density is the ratio of an object's mass to its volume. The S.I. unit for this property is kg/m^3. It can also be expressed in g/cm^3

Mathematically,

Density=\frac{Mass}{Volume}      ...(1)

Question related to this topic: A rock of mass 45 grams has a volume of 15cm^3. Determine the density of the given rock.

Answer: We are given

Mass of the rock = 45 g

Volume of the rock = 15cm^3

Putting values in equation 1, we get:

Density=\frac{45g}{15cm^3}=3g/cm^3

From the above example, we conclude that mass and volume are related to determine density of any object.

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For a solar eclipse to occur which of the following alignments is necessary? A. The moon is located along a straight line betwee
svlad2 [7]

A. I'm pretty sure, could be C though..

8 0
2 years ago
Calculate the mass in grams of each of the following amounts: 1.002 mol of chromium 4.08 x 10-8 mol of neon
Pepsi [2]

Answer:

Mass_{chromium}=52.1\ g

Mass_{neon}=8.23\times 10^{-7}\ g

Explanation:

<u>Calculation of the mass of chromium as:- </u>

Moles = 1.002 moles

Molar mass of chromium = 51.9961 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

1.002\ mol= \frac{Mass}{51.9961\ g/mol}

Mass_{chromium}=1.002\times 51.9961\ g = 52.1\ g

<u>Calculation of the mass of neon as:- </u>

Moles = 4.08\times 10^{-8} moles

Molar mass of neon = 20.1797 g/mol

Thus,

1.002\ mol= \frac{Mass}{20.1797\ g/mol}

Mass_{neon}=4.08\times 10^{-8}\times 20.1797\ g = 8.23\times 10^{-7}\ g

6 0
2 years ago
The combustion of propane is best described as an
GalinKa [24]
<h3><u>Answer;</u></h3>

Exothermic chemical reaction

<h3><u>Explanation;</u></h3>
  • Exothermic reactions are chemical reactions where the products have less energy that the reactants.
  • Exothermic reactions give off energy, usually in the form of heat, while endothermic reactions absorb energy.
  • The combustion of propane is definitely an exothermic reaction because it generates a lot of heat.

5 0
2 years ago
Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (Na
Afina-wow [57]

The pH of a buffer solution : 4.3

<h3>Further explanation</h3>

Given

0.2 mole HCNO

0.8 mole NaCNO

1 L solution

Required

pH buffer

Solution

Acid buffer solutions consist of weak acids HCNO and their salts NaCNO.

\tt \displaystyle [H^+]=Ka\times\frac{mole\:weak\:acid}{mole\:salt\times valence}

valence according to the amount of salt anion  

Input the value :

\tt \displaystyle [H^+]=2.10^{-4}\times\frac{0.2}{0.8\times 1}\\\\(H^+]=5\times 10^{-5}\\\\pH=5-log~5\\\\pH=4.3

7 0
2 years ago
Which of the following describes the electron sharing between hydrogen and fluorine?
EastWind [94]
Hello
We know both the elements involved in bonding are non-metals and the primary type of bonds involved in non-metals are covalent bonds. Covalent bonds are formed when two atoms share one or more electrons; thus we know that whatever the number of electrons shared, it has to be equal for both. We can eliminate choices A and B.
Next, we understand that it is easier for one atom to be shared among the two, rather than the 7. First, because Hydrogen needs only 1 electron to be stable and would require energy to compensate the remaining 6. Second, electrons are attracted towards the nucleus so it is inefficient to try and share 7 electrons when 1 provides the same amount of stability to Fluorine.
Therefore, the answer is C.
4 0
2 years ago
Read 3 more answers
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