The models show the phases of a substance at various temperatures. Which model BEST communicates the kinetic energy and particle arrangement of a liquid? A. Model D, because it has high kinetic energy so the particles in the model have ionized B. Model B, because it has some kinetic energy and the particles have a free flowing shape C. Model C, because it has high kinetic energy so the particles in the model have no definite shape D. Model A, because it has some kinetic energy and the particles move freely

Explanation:

C3H8 + 502 ----> 3CO2 + 4H20

4NH3+7O2------> 4NO2+6H2O

2Al(NO3)3 + 3Na2S -------> Al2S3+6NaNO3

Answer:

ethyl ethernal

Explanation:

no explanation

Answer:

3

Explanation:

3 different elements are found

Mg - magnesium

O -oxygen

H - hydrogen

'

mark brainliest

Answer: 3

Explanation:

Answer:

3rd statment

Explanation:

ray 1 and 2 are same vertical line

Answer: C:  Ray 1 and Ray 2 make the same angle with the vertical line.

Explanation:

Answer:

[tex]58.48^{\circ}\text{C}[/tex]

Explanation:

[tex]P_1[/tex] = Initial pressure = 2.77 atm

[tex]V_1[/tex] = Initial volume = 263 mL

[tex]T_1[/tex] = Initial temperature = [tex]47^{\circ}\text{C}=(47+273.15)\ \text{K}[/tex]

[tex]P_2[/tex] = Final pressure = 3.87 atm

[tex]V_2[/tex] = Final volume = 197 mL

[tex]T_2[/tex] = Final temperature

We have the relation

[tex]\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow T_2=\dfrac{P_2V_2}{P_1V_1}\times T_1\\\Rightarrow T_2=\dfrac{3.87\times 195}{2.77\times 263}\times (47+273.15)\\\Rightarrow T_2=331.63\ \text{K}=331.63-273.15\\\Rightarrow T_2=58.48^{\circ}\text{C}[/tex]

The final temperature will be [tex]58.48^{\circ}\text{C}[/tex].

Answer:

0.42 J/gºC

Explanation:

We'll begin by calculating the heat energy used to heat up the water. This can be obtained as follow:

Mass (M) of water = 560 g

Initial temperature (T₁) = 22.7 °C

Final temperature (T₂) = 80.3 °C.

Specific heat capacity (C) of water = 4.18 J/gºC

Heat (Q) absorbed =?

Q = MC(T₂ – T₁)

Q = 560 × 4.18 (80.3 – 22.7)

Q = 2340.8 × 57.6

Q = 134830.08 J

Finally, we shall determine the specific heat capacity of the burner. This can be obtained as follow:

Mass (M) of burner = 699 g

Initial temperature (T₁) = 482.0°C

Final temperature (T₂) = 22.7 °C

Heat (Q) evolved = – 134830.08 J

Specific heat capacity (C) of the burner =?

Q = MC(T₂ – T₁)

–134830.08 = 699 × C (22.7 – 482.0)

–134830.08 = 699 × C × –459.3

–134830.08 = –321050.7 × C

Divide both side by –321050.7

C = –134830.08 / –321050.7

C = 0.42 J/gºC

Therefore, the specific heat capacity of the burner is 0.42 J/gºC

Answer:

68,400

Explanation:

Answer:

84.3 g of nitrogen triiodide is the theoretical yield.

Explanation:

Hello there!

In this case, according to the chemical reaction:

[tex]N_2 + 3I_2 \rightarrow 2NI_3[/tex]

It is possible to compute the theoretical yield of nitrogen triiodide by each reactant via stoichiometry as shown below:

[tex]m_{NI_3}^{by\ N_2}=4.49gN_2*\frac{1molN_2}{28.01gN_2} *\frac{2molNI_3}{1molN_2}*\frac{394.72gNI_3}{1molNI_3} =126.55gNI_3\\\\m_{NI_3}^{by\ I_2}=81.3gI_2*\frac{1molI_2}{253.81gI_2} *\frac{2molNI_3}{3molI_2}*\frac{394.72gNI_3}{1molNI_3} =84.29gNI_3[/tex]

Therefore, we infer that the smallest amount is the correct theoretical yield as it comes from the limiting reactant, in this case, diatomic iodine as it yields 84.3 g (three significant figures) of nitrogen triiodide as the theoretical yield; incidentally, nitrogen acts as the excess reactant.

Best regards!

Answer:

a. n = 3

b. n = 4

Explanation:

n is just the number in front of the orbital, as n represents the energy level of the orbital.

Answer:

1. n=3

2.n=4

Explanation:n is the number infront of the orbital that representgsthe energy level

Answer:

velocity

Explanation:

because he is going 30 miles west

Explanation:

(formula)

Answer:

0.13475 mol

Explanation:

From this question sally knows that n= 2

MCln = MCl

[Mn+] using nernst equation = 8.279

The volume of the resulting mixture Mn+ = 8.138 ml

The number of moles mn+ =

8.279 x 8.138

= 67.375mmol

= 0.067375

Since n = 2

The mold of cl- that must be dissolved in the compartment

= 0.067375 x 2

= 0.13475 mols

Through satellites...

Answer:

A for growth and body repair

Explanation:

B, C, and D don't have anything to do with animals.

Explanation:

Sublimation describes a solid turning directly into a gas. Melting, on the other hand, occurs when a solid turns into a liquid. Water can, under the right circumstances, sublimate, though it usually melts at temperatures above 0 degrees Celsius or 32 degrees Fahrenheit. Carbon dioxide (CO2), however, is very different. The conditions that determine whether CO2 melts or sublimates are both temperature and atmospheric pressure.

Answer:

A disease caused by a plasmodium parasite, transmitted by the bite of infected mosquitoes.

The severity of malaria varies based on the species of plasmodium.

Symptoms are chills, fever, and sweating, usually occurring a few weeks after being bitten.

People traveling to areas where malaria is common typically take protective drugs before, during, and after their trip. Treatment includes antimalarial drugs.

Explanation:

Answer: moles = 0.0799305403604264

Explanation:

Answer:

Electrons are shared when ionic bonds are formed

The statement which describes an ionic bond formation is  " a metal donates one or more of its electron to a non-metal.

An ionic bond is formed between two atoms by electron donating by one atom and gaining by the second atom. The electron donating element is electropositive and the electron accepting one is electronegative.

Normally the electropositive elements are metals of 1st or 2nd group of periodic table. They can make bond with non-metals like halogens and other electronegative elements like nitrogen, oxygen etc.

Therefore, the force of attraction which binds two atoms together in an ionic bond is formed by electron donation by a metal to a non-metal.

To learn more about ionic bond, refer the link below:

https://brainly.com/question/11527546

#SPJ2

Answer: The suspected and crime scene fingerprint patterns are similar which means they belong to the same individual.

Explanation:

A:  Ending ridge between two lines forming a loop like structure common in both suspected and crimes scene patterns.

B: Bifurcation which includes the formation of fork like shape of the ridge.

C: Island is a dot or point like structure which is common in both patterns.

D: It includes delta which is seen in the case of loop and whorl patterns of the fingerprint in loop there is only one delta and in case of whorl there are two deltas. The delta have an island and a bifurcation in it which is common in both patterns of the fingerprints.

E: Intersection occurs when two ridges changes their directions. It is common in the two patterns.

Both animal X and animal Y begin life as a tadpole and change form as they develop

Answer:

it is c, for those who want an answer fast

Explanation:

Answer:

D. The Church

plz mark me as brainliest

Answer:

C) Carbon dioxide is the answer.

Answer:

C. Carbon Dioxide

Carbon is absorbed by plants and chemically converted to oxygen via photosynthsis.

Hope this helps!

Answer:

Al2O3

Explanation:

Empirical formula is found by converting percent composition into a mole ratio.

First, assume you have a 100g sample of the substance. This allows you to make your percent composition into grams.

100% = 100g

53% = 53g Al

47% = 47g O

Next, divide each substance's mass by their molar mass. This converts your number to moles.

[tex]53g Al / 27g Al = 1.96 mol\\\\47g O/16g O = 2.93mol[/tex]

Next, divide both mol answers by the smallest number of moles.

[tex]1.96mol/1.96mol = 1\\2.93mol/1.96mol = 1.5[/tex]

Usually, these answers would be your subscripts for your empirical formula. However, we cannot have a decimal subscript, so we will multiply our answers by a factor of 2 to get to a whole number. This gives us 2 moles of Al and 3 moles of oxygen, or a formula of Al2O3.

Considering the definition of empirical formula, the correct answer is the second option: the empirical formula is Al₂O₃.

The empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms, that is, the subscripts of chemical formulas are reduced to the most integers. small as possible.

Assuming a 100 grams sample, the percentages match the grams in the sample. So you have 53 grams of Al and 47 grams of O.

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

Al: [tex]\frac{53 grams}{27 \frac{grams}{mole} }[/tex]= 1.9629 moles

O: [tex]\frac{47 grams}{16 \frac{grams}{mole} }[/tex]= 2.9375 moles

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

Al: [tex]\frac{1.9629 moles}{1.9629 moles}[/tex]= 1

O: [tex]\frac{2.9375 moles}{1.9629 moles}[/tex]≅ 1.5

You cannot have a decimal subscript, so you will multiply our answers by a factor of 2 to get to a whole number:

Al: 1× 2= 2

O: 1.5× 2= 3

Therefore the Al:O mole ratio is 2: 3

Finally, the correct answer is the second option: the empirical formula is Al₂O₃.

Learn more about empirical formula:

brainly.com/question/5115389?referrer=searchResults

brainly.com/question/4594902?referrer=searchResults

brainly.com/question/13725914?referrer=searchResults

brainly.com/question/13112542?referrer=searchResults

Answer:

spring tides is the correct answer of your question

Answer:

The answer to your question is given below

Explanation:

We'll begin by converting 500 cm³ to L. This can be obtained as follow:

1000 cm³ = 1 L

Therefore,

500 cm³ = 500 cm³× 1 L / 1000 cm³

500 cm³ = 0.5 L

Next, we shall determine the number of mole of Na₂CO₃ in the solution. This can be obtained as follow:

Volume = 0.5 L

Molarity = 2 M

Mole of Na₂CO₃ =?

Molarity = mole /Volume

2 = Mole of Na₂CO₃ / 0.5

Cross multiply

Mole of Na₂CO₃ = 2 × 0.5

Mole of Na₂CO₃ = 1 mole

Finally, we shall determine the mass of 1 mole of Na₂CO₃. This can be obtained as follow:

Mole of Na₂CO₃ = 1 mole

Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3)

= 46 + 12 + 48

= 106 g/mol

Mass of Na₂CO₃ =?

Mass = mole × molar mass

Mass of Na₂CO₃ = 1 × 106

Mass of Na₂CO₃ = 106 g

Thus, to prepare the solution, weigh 106 g of Na₂CO₃ and dissolve in 500 cm³ (i.e 0.5 L) of water.

Answer:

"100" is the molarity of solution.

Explanation:

The given values are:

Moles of solute,

= 5 mol

Liters of solution,

= 0.05 L

Now,

The molarity of a solution will be:

=  [tex]\frac{Moles \ of \ solute}{Liters \ of \ solution}[/tex]

On substituting the values, we get

=  [tex]\frac{5}{0.05}[/tex]

=  [tex]100[/tex]