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3 years ago

One of the primary benefits of a survey is that they

Chemistry

1 answer:

snow_lady [41]3 years ago

5 0

Answer:

B). Allow efficient gathering of unobservable phenomena.

Explanation:

Surveys are described as the method of gathering information from a specified group of respondents for purposes like research or assessment of the truth of thoughts or opinions associated with a process.

As per the question, one of the most considerable benefits of the survey is that 'it allows the efficient gathering of unobservable phenomena'. The data associated with phenomena like stated preferences, behaviors, beliefs, and factual information are unobservable and can not be collected through observation but surveys help in doing so as well as in the assessment of the validity or reliability of the existing propositions about such phenomena. Thus, option B is the correct answer.

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Which is a conversion factor for this statement of equality: 12 in. = 1 foot?

Lera25 [3.4K]

Isn't that going to be an D since 1 foot is equal 12 inches.

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3 years ago

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What is pollinatio is it in the plants

yarga [219]

Answer:

Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.

Explanation:

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3 years ago

What is the name of the alkane having five carbons?

Tatiana [17]

Explanation:

Alkanes are the simple hydrocarbons that have only carbon and hydrogen atoms attached to each other through single bonds.

General chemical formula of an alkane is $C_{n}H_{2n+2}$ , where n is any integer.

For example, if n = 5 then formula of the alkane will be as follows.

$C_{n}H_{2n+2}$

= $C_{5}H_{2(5)+2}$

= $C_{5}H_{12}$

A suffix "-ane" is added in the name of an alkane. So, an alkane with five carbon atoms will be known as pentane.

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3 years ago

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A new penny has a mass of 2.49 grams and occupies 0.349 cm cubed. If pure copper has a density of 8.96 g/cm cubed, is the new pe

lys-0071 [83]

Answer: The new penny is not pure copper

Explanation:

Density $\rho$ is defined as a relation between the mass $m$ and the volume $V$ :

$\rho=\frac{m}{V}$

Now, we are told the density of pure copper is:

$\rho_{copper}=8.96 g/cm^{3}$

And we are given the mass and volume of the new penny, with which we can calculate its density:

$\rho_{penny}=\frac{m_{penny}}{V_{penny}}=\frac{2.49 g}{0.349 cm^{3}}$

$\rho_{penny}=7.13 g/cm^{3}$ As we can see the density of this penny is not equal to the density of pure copper, hence the new penny is not pure copper.

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4 years ago

Classify each of the following as elements (E), compounds (C) or Mixtures (M). Write the letter X if it is none of these. ______

Lana71 [14]

Answer:

Diamond - E

Sugar- C

Milk - M

Iron- E

Air- M

Sulfuric Acid- C

Gasoline - M

Electricity- X

Krypton- E

Bismuth - E

Uranium - E

Kool-Aid -M

Water - C

Alcohol - C

Pail of Garbage - M

Ammonia - C

Salt - C

Energy - X

Gold - E

Wood - M

Bronze - M

Ink - M

Pizza - M

Dry Ice - C

Baking Soda - C

Explanation:

An element is the smallest part of a substance that is capable of independent existence. An element cannot be broken down into any other substance. Krypton, Bismuth etc are all elements.

A compound is a combination of two or more elements which are chemically combined together e.g NH3, CO2 etc.

A mixture is any combination of substances that are not chemically combined together. E.g Pizza, milk etc

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3 years ago