The scatterplot shows the number of visitors at an art show in relation to admission price. What does point A on the scatterplot represent?


A. When the ticket price was $120, a total of 15 people visited the art show.


B. When the ticket price was $15, a total of 180 people visited the art show.


C. When the ticket price was $180, a total of 15 people visited the art show.


D.When the ticket price was $15, a total of 120 people visited the art show.

PLZ ANSWER AND ILL MARK YOU THE BRANLIEST

Answer:

Explanation:

If observed through the year, the constellations shift gradually to the west. This is caused by Earth's orbit around our Sun. In the summer, viewers are looking in a different direction in space at night than they are during the winter.

Acids are proton donors, whereas bases are proton recievers. The more positive the charge on an atom, the higher its acidity. More concentrated electrons = more stable base = weaker acid. But electronegativity = more concentrated electrons. And electronegativity = stronger acid.

Answer:

1- gram of oxygen, 2- 3.01x1023 atoms of oxygen, 3- 1 molecule of oxygen, 4- 1mole of oxygen, 5- 1atom of oxygen.

Answer:

Because the rock underwent lava and heat/pressure transformation. They are cooled and heated by magma, and then under go pressure. No fossils would be found in those.

Explanation:

Hope this helps! :)

Answer:

Because...

Explanation:

Igneous rock is cooked in extreme hot temperatures.

Metamorphoc is lava cooled downed.

Answer:

7.96g, 33.79%

Explanation:

I'll try my best to explain the entire process behind this question ;)

From the question, you can write the reaction

[tex]2H_2O(l)->2H_2(g)+O_2(g)[/tex]

Now, there are a few reasons it is like this. Oxygen is a diatomic element, meaning it doesn't and can't exist as just O. It exists as O₂. To balance, this, double the amount of water and hydrogen so there is an equal amount of  each element on both sides of the reaction (4 H's, 2 O's on the reactant side, and 4 H's, 2 O's on the product side).

From this we can get a mole-to-mole ratio.

Onto the stoichiometry. Our goal in this is to convert from grams of water to grams of hydrogen, and we do so with a mole to mole ratio.

[tex]71.0gH_2O*\frac{1molH_2O}{18.02g} *\frac{2molH_2}{2molH_2O}* \frac{2.02g}{1molH_2}\\\\ =7.96gH_2[/tex]

Basically, what I did was divide by water's molar mass to get moles of water, multiplied by the mole-to-mole ratio (2:2) to get moles of H2, and then multiplied by H2's molar mass to get what should be the amount of H2 produced by the reaction.

For percent yield, you can calculate it is such:

[tex]\frac{Actual}{Theoretical}*100[/tex]

Plug the numbers in:

[tex]\frac{2.69g}{7.96g}*100\\\\ =33.79%[/tex]

So, the percent yield is 33.79%

Answer:

1 and 4

Explanation:

Answer:

See below

Explanation:

The following reasons tell why atom combine to form compounds:

1) They want to follow octet or duplet rule and attain the noble gas configuration.

2) They combine to form compounds because of the electrostatic attraction between them.

3) They form compounds to lower their energy and to become stable.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

CH₂O

Explanation:

From the question given above, the following data were obtained:

Carbon (C) = 39.9%

Hydrogen (H) = 6.7%

Oxygen (O) = 53.4%

Empirical formula =?

The empirical formula of acetic acid can be obtained as follow:

C = 39.9%

H = 6.7%

O = 53.4%

Divide by their molar mass

C = 39.9 / 12 = 3.3

H = 6.7 / 1 = 6.7

O = 53.4 / 16 = 3.3

Divide by the smallest

C = 3.3 / 3.3 = 1

H = 6.7 / 3.3 = 2

O = 3.3 / 3.3 = 1

The empirical formula => CH₂O

Answer:

B. Melting

Explanation: Process of elimination

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Answer:

about 4.8kJ

Explanation:

There is some missing information in the question given.

For use to determine the amount of heat that must be reacted in the system to convert 100g of NaNO₃ into NaHSO₄(s);

Then, we need to consider the following reaction between sodium nitrate (NaNO₃)  and sulfuric acid (H₂SO₄):

[tex]\mathbf{NaNO_{3(s)}+ H_2SO_{4(l)}\to NaHSO_{4(s)}+HNO_{3(g)} \ \ \ \ \ \Delta H = 21.2 \ kJ}[/tex]

From the above reaction, 84.99 gm of NaNO₃ reacted with H₂SO₄ which is converted into NaHSO₄ thereby absorbing 21.2 kJ amount of heat.

This implies that; if 84.99 gm of NaNO₃ absorbs 21.2 kJ amount of heat.

1 gm of NaNO₃ will absorb = [tex]\mathsf{\dfrac{21.2}{84.99} \ kJ \ heat}[/tex]

= 0.2494 kJ amount of heat.

∴

100 g of NaNO₃ will absorb [tex]= \mathsf{\dfrac{21.2}{84.99} \times 100 \ kJ \ heat}[/tex]

= 24.94 kJ amount of heat.

Therefore, we can conclude that the amount of heat that must be absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s) is 24.94 kJ.

Learn more about the amount of heat absorbed in a chemical reaction here:

https://brainly.com/question/3521372?referrer=searchResults

Answer:

A- 3.0110 X 10^24

Explanation:

I took the quiz

The term mole concept is used here to determine the number of atoms of potassium. The number of atoms of potassium present in 195.49 grams is 3.011 × 10²⁴.

One mole of a substance is defined as that quantity of it which contains as many entities as there are atoms exactly in 12 g of carbon - 12. The formula used to calculate the number of moles is given as:

Number of moles of atoms (n) = Given mass / Gram atomic mass

The given mass of potassium =  195.49 g

The atomic mass of 'K' = 39.098 g

n = 195.49 / 39.098 = 5 mol

Number of atoms = Number of moles of atoms × 6.022 × 10²³

5 mol ×  6.022 × 10²³ = 3.011 × 10²⁴

Thus the number of atoms is 3.011 × 10²⁴ .

To know more about mole concept, visit;

https://brainly.com/question/19730733

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Answer:

Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.

Hope this helped.

Answer:

[tex]6.05211\times 10^{23}\ \text{atoms}[/tex]

Explanation:

Moles of carbon dioxide = 1.005 moles

[tex]N_A[/tex] = Avogadro's number = [tex]6.022\times 10^{23}\ \text{mol}^{-1}[/tex]

Number of atoms is given by

[tex]\text{Moles}\times N_A=1.005\times 6.022\times 10^{23}[/tex]

[tex]=6.05211\times 10^{23}\ \text{atoms}[/tex]

The number of atoms in the given amount of moles of carbon dioxide is [tex]6.05211\times 10^{23}\ \text{atoms}[/tex].

Answer:

22.41 Liters

Explanation:

Using the general law equation;

PV= nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question,

mass of water vapor = 18g

Molar mass of water (H2O) = 1(2) + 16 = 18g.

mole = mass/molar mass

- mole (n) = 18/18 = 1mol

V = ?

T = 273K

p = 1 atm

Using PV = nRT

V = nRT/P

V = 1 × 0.0821 × 273/1

V = 22.41 Liters

Answer:

Greater than or less than

Answer:

Hydrogen Bonds Make Water Sticky

Explanation:

This sticking together of like substances is called cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.

Answer:

B

Explanation:

A body moving with a constant speed and constantly changing direction and changing velocity is said to be in circular motion.

moles of He=4 L/22.4 L=0.1786 mol

moles of Ne=2 L/22.4 L=0.0893 mol

total moles of the gas mixture

=0.1786+0.0893

=0.2679 mol

mole fraction of He=0.1786 mol/0.2679 mol=0.6667

mole fraction of Ne=0.0893 mol/0.2679 mol=0.3333

Answer:

The correct answer is B)The intermolecular attractions are stronger with chlorine than iodine.

Explanation:

Have a nice Day

Answer:

cfvghjnmkljhgtfaASDFGVBHNJNGFDXZVBRNHT45RFD

Explanation:

Loggerhead turtles live and migrate around the Atlantic Ocean. Which of the following is an adaptation of Loggerhead turtles? *

Answer:

Dirt

mud

rocks

ect.

Explanation:

Answer:

B. They travel at the same speed through any one material.

Explanation:

Answer: about 1,705,536 hrs

24 hrs = 1 day

189 hrs = 1 week

756 = 1 month

9072 = 1 yr

1,705,536 = 188 yrs

Explanation:

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