SEP construct explanations what is the difference between a molecule and a compound

Answers

Answer 1

The difference between a molecule and a compound is a molecule is made up of pure substance and the same type of atoms, but a compound is made up of different kinds of atoms.

What are molecules and compounds?

Molecules are substances that are made up of the same type of atoms. Examples are N³, O³- ozone, etc.

Compounds are made up of different kinds of atoms. Examples of compounds are water, made up of hydrogen and oxygen. H₂O.

Thus, a compound is made up of various types of atoms, as opposed to a molecule, which is composed of a pure substance and the same type of atoms.

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Related Questions

Which statement best describes why a chemical change is different from a physical change?

A chemical change is used to identify characteristics of a substance, and a physical change identifies the behavior of a substance when in a reaction.

A chemical change results in a new substance being formed, whereas a physical change will result in a different state of matter.

A chemical change results in a different state of matter, and a physical change results in a new substance being formed.

A chemical change is used by scientists to create new substances, and a physical change happens naturally.

Answers

Answer:

A chemical change results in a new substance being formed whereas a physical change will result in a different state of matter

It’s the second one lol

Q
Unit
If the rules for significant figures
are observed in the addition
example shown, how should the
total for this addition be rewritten?
A. 5,610.00
B. 5,610.340
C. 5,610.34
D. 5,610.3
35.7
432.33
+ 5,142.312
5,610.342

Answers

The correct answer to the addition of the given number will be D. 5,610.3 based on the rules for addition with significant figures.

We have to find the addition of:

35.7 + 432.33 + 5,142.312 = 5,610.342

However, according to the rule for significant figures, if the addend with the fewest decimal places is 1, the final consequent will also have one decimal place. If the lowest addend is 2, the final consequent will have two decimal places, and so on.

Because significant numbers are established in the form of digits, they are also known as significant digits. The number of significant digits can be determined by counting all of the values beginning with the first non-zero digit on the left. These numbers are dependable and required to represent the quantity of a length, volume, mass, measurement, and so on.

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do numbers 9) and 12) asap!! thanks you!!

Answers

Explanation:

for 9 i don't know the answer but it's 0.00000901 and for 12 it's 0.0027651

3 of 103 of 10 Items
25:14










Question
Choose the words or phrases that apply to this scenario.

Several experiments in the 1800s demonstrated that the tips of plants are responsible for detecting light, which causes the stem of the plant to elongate and bend towards the light.
Which of these phrases are accurate about the experimental design and its validity? (Choose 3)
A The light levels should increase during the experiment as the plant grows.The light levels should increase during the experiment as the plant grows.
B All species of plants behave the same way.All species of plants behave the same way.
C The experiment should be repeatable by the same researcher.The experiment should be repeatable by the same researcher.
D A control plant with no light or top light would likely show no bending.A control plant with no light or top light would likely show no bending.
E The experiment should be replicated by different researchers.

Answers

The accurate phrases abut the study design and validity are:

All species of plants behave the same way A control plant with no light or top light would likely show no bending.The experiment should be replicated by different researchers.

What is the role of light in the growth of plants?

The role of light in the growth of plants is important as light is necessary for photosynthesis.

The growth regions of a plant are the shoots and the roots.

The shoots of plants show positive phototaxis by growing towards a unidirectional light source.

A unidirectional light source is light that comes from one direction.

The growth region of the shoot, that is the tips produces hormones which enable the tip of the plant to grow towards the light source.

Considering the given experiment , the accurate phrases abut the study design and validity are:

All species of plants behave the same way A control plant with no light or top light would likely show no bending.The experiment should be replicated by different researchers.

In conclusion, the experiment to demonstrate the bending of plants shoots towards a light source should include a control and must be repeated by other researchers,

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What does it mean when there is a number before a chemical letter but a small number underneath it in science

Answers

Explanation:

The little number you see to the right of the symbol for an element is called a subscript. That number indicates the number of atoms of that element present in the compound.

a chemist measured the amount of rubidium chloride produced during an experiment. she finds that of rubidium chloride is produced. calculate the number of moles of rubidium chloride produced.

Answers

The mass of rubidium chloride that participates is 731.57 g

Complete Question

The chemical formula for rubidium chloride is RbCI. A chemist determined by measurements that moles of rubidium chloride participate in a chemical reaction are 6.05 mol. Calculate the mass of rubidium chloride that participates. Be sure your answer has the correct number of significant digits.

The mass of rubidium chloride that participates is 731.57 g

It is known that number of moles is equal to mass divided by molar mass of the substance.

No. of moles = given mass/molar mass

It is known that molar mass of RbCl is 120.921 g/mol.

Hence, calculate the mass of RbCl for 6.05 mol as follows.

No. of moles = given mass / molar mass

6.05 mol = mass/120.921g/mol

mass = 731.57 g

Therefore, we can conclude that mass of rubidium chloride that participates is 731.57 g.

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what is the cost to drive in san fransisco to la (405 miles) if the cost of gasoline is $3.85/gal and the car gets 24 mil/gal?

Answers

The cost of travelling from San Francisco to Los Angeles is $65

What is the cost of driving?

Now we know that it could be expensive to use an automobile because of the cost of gasoline. The cost of the use of gasoline depends on the distance that is travelled.

If 1 gallon is required for 24 miles

x gallons is required for 405 miles

x =  405 miles * 1 gallon/24 miles

x = 16.9 gallons

Now;

If 1 gallon costs $3.85

16.9 gallons costs  16.9 gallons * $3.85/1 gallon

= $65

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calculate the average atomic mass of lead based on the given data and the atomic masses. isotope atomic mass (amu) percent abundance pb-206 205.97 14.5 pb-207 206.98 17.0 pb-208 207.98 68.5

Answers

The average atomic mass of lead given its three isotopes is 207.52.

What is average atomic mass?

Average atomic mass is the weighted average of the atomic masses of the naturally occurring isotopes of an element.

According to this question, the following isotopes with their percent abundance and atomic masses of lead are given:

Pb-206 - 205.97 14.5%Pb-207 - 206.98 17.0%Pb-208 - 207.98 68.5%

Pb-206 = 14.5/100 × 205.97Pb-207 = 17/100 × 206.98Pb-208 = 68.5/100 × 207.98

Pb-206 = 29.865Pb-207 = 35.186Pb-208 = 142.466

The average atomic mass is as follows: 29.865 + 35.186 + 142.466 = 207.52

Therefore, the average atomic mass of lead given its three isotopes is 207.52.

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