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An unknown or changeable quantity is called a(n)...


I think the answer would be dependent variable. An unknown or changeable quantity is called a dependent variable. It is what you measure in the experiment and what is affected during the experiment. Hope this answers the question. Have a nice day.

Related Questions

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An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 2.50g of this compound produced 3.67g of carbon dioxide and 1.50g of water. How many moles of carbon, C, were in the original sample?

The solution to the problem is as follows:

 a) 

C + O2 = CO2 

Molar mass CO2 = 44 g/mol 

3.67 g CO2 * 1 mol / 44 g = 

=0.0834 mol CO2 = 0.0834 mol C 

I hope my answer has come to your help. God bless and have a nice day ahead!

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Divergent boundaries are also called

Divergent Plate
Constructive boundaries
extensional boundaries

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What is the most reliable measurement for the quantity of matter? volume density mass weight

Answer is: mass.

Mass is a fundamental measure of the amount of matter in the object.  Kilogram (symbol: kg) is the base unit of mass in the International System of Units.  

The weight is the force of gravity on the matter.  It is affected by gravity.

Volume is the amount of space that a substance occupies.  It is affected by temperature.

Density is a measure of mass per unit of volume (for example grams per milliliter). It is affected by temperature.

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An unknown or changeable quantity is called a(n)...

Answer:

An unknown and changeable quantity is known as an variable.

Explanation:

There are two types of quantities:

Constant quantities:

Quantities which can not be changed by changing physical parameters and their value is normally known.

Variable quantities:

These quantities can be changed by changing the physical parameters or conditions. Due to which they are unknown for particular conditions and have to be measured.

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Water is an example of a(n) _____.

Your answer is d ) a complex system

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The surface of water can act like a sort of skin due to a property of liquids called a. viscosity. b. surface tension. c. condensation. d. evaporation.

The surface of water can act like a sort of skin due to a property of liquids called :
Surface tension
It caused by the attraction of the particles in the surface

Hope this helps

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A water molecule is composed of two hydrogen atoms and one oxygen atom arranged in a bent shape. Since oxygen is significantly more electronegative than hydrogen, oxygen atoms have a much stronger attraction to shared electrons than does hydrogen. This unequal sharing of electrons and bent shape results in water being called a _________________ . A) polar molecule B) magnetic molecule C) ionic molecule D) covalent molecule

Answer: A)  polar molecule  

Explanation: Polar molecules are molecules which contain atoms of different electronegativities.

Non polar molecules are molecules which contains atoms of same electronegativities.

Water is a polar covalent molecule formed by unequal sharing of electrons. Oxygen being more electronegative tend to keep the electron pair towards itself thus generating a partial negative charge. The hydrogen acquire a partial positive charge thus resulting in a polar molecule.

The bent shape is due to repulsion between lone pairs and bond pairs of electrons.




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Question 7.7. All amino acids have a central carbon with four components attached to it. One of these components is called the R-group. Which of the following best describes the R-group? (Points : 3) The R-group helps the amino acid replicate. The R-group gives the amino acid unique characteristics. The R-group is the same in all amino acids. The R-group is what stabilizes the amino acid.

I believe the correct answer from the choices listed above is the second option. The R-group gives the amino acid unique characteristics. This group differs with each type of amino acid and this difference gives them different behavior and properties. Hope this answers the question.

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How many moles of water, H2O, contain 2.0×1022 molecules of water? (See the hints for assistance in interpreting scientific notation.) Express the quantity in moles to two significant figures.

Scientific notation is the standardized way to represent any number as the product of a real number and a power of ten. Apply Avogadro's constant which is 6.023x10^23 molecules per mole.

20x10^22 molecules / 
6.023x10^23 molecules per mole = 0.33 moles.

Posted in Chemistry

The Bessemer process created strong, lightweight called _________.

For the answer to the question above, it is steel.
For addition information, Bessemer process is a steel-making process, now largely superseded, in which carbon, silicon, and other impurities are removed from molten pig iron by oxidation in a blast of air in a unique tilting retort 

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The addition of water to an Allene is called a hydrogenation reaction? Give an example. Explain the mechanism

Ndeed, most of the alkene addition reactions discussed earlier also take place ... This behavior is nicely explained by differences in the stages of the hydrogenation reaction. ... For examples and a discussion of mechanisms click here. ... to double bonds which give alcohol products, addition of water to alkynes gives ketone ...

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The highly reactive elements in group 7A are known for forming salts. What are they called? transition metals metalloids halogens noble gases

The highly reactive elements in group 7A are known for forming salts. They are called halogens, and you can find fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) in this group. Halogen means "salt-inducing."

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"Which piece of evidence would suggest an unknown substance is an ionic compound? " It conducts electricity when dissolved in water. It is a liquid at room temperature. It is a gas at room temperature. It has a low melting point.

The correct answer is It conducts electricity when dissolved in water.

When dissolved, they split into ions that are charged and have a positive or a negative charge. They can be either liquid or solid depending on the size of the molecules, while gasses don't occur. They have high melting and boiling points.

Posted in Chemistry

Increase Crop Production food Engineers combine two plants so that each plant strength compensates for the others weakness what is this technique called

Answer: Cross breeding

Explanation: Cross breeding can be defined as the method by which two plants can be crossed to produce the desired character and compensate the useless characters shown by the plants individually.

Suppose a plant produces pink flower but small slower and another plant produces white flower but big flower.

If we want big pink colored flower then, these two plants can be crossed among each other so to produce the desired characters and hide the useful characters.

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The practice of plowing fields along the curves of a slope is called?

Contour plowing is the practice of plowing fields along the curves of a slope.

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While out on a hike, you find an unknown mineral. how would test the mineral to find out what it is?

You can find out what mineral it is when you bring it with you after you hike. You can bring it to a laboratory that specializes on mineral rocks for testing. They know what they should do to find out what it is. Hope this helps. Have a nice day. 

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2.15g of an unknown gas at 51c and 1.00 atm is stored in a 2.95 L flask

MM = [(2.15)(0.08206)(344)]/[(1.1)(1.75)] = 31.53 g/mol Remember to convert temperature to Kelvin.

Posted in Chemistry

You walk in the front door of your house. you smell an onion that someone is cutting in the kitchen. explain why you are able to smell it, what this process is called, and what other types of substances exhibit this behavior.

Plants let out volatile organic compounds as a chemical defense and first aid. this can be found when the plant is being injured; like cutting grass and chopping an onion.

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