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Answer:

When the candle is lit and burning, it has kinetic energy.

Explanation:

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Answer:

86.85°C

Explanation:

K = °C + 273.15

360K − 273.15 = 86.85°C ≈ 87°C

Answer:

A or C

Explanation:

Answer:

are made up of one or  more cells

Explanation:

A cell is the building block of life of any organism. Therefore, an organism simply cannot exist if it has no cells

Answer:

ydrt

Explanation:

u

Answer:

120 moles of NO

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4NH₃ + 6NO —> 5N₂ + 6H₂O

From the balanced equation above,

6 moles of NO reacted to produce 5 moles of N₂.

Finally, we shall determine the number of mole NO needed to produce 100 moles of N₂. This can be obtained as follow:

From the balanced equation above,

6 moles of NO reacted to produce 5 moles of N₂.

Therefore, Xmol of NO will react to produce 100 moles of N₂ i.e

Xmol of NO = (6 × 100)/5

Xmol of NO = 120 moles

Therefore, 120 moles of NO is needed for the reaction.

Answer:

i couldnt draw it but here is a picture

Explanation:

Answer:

The equilibrium law

Explanation:

According to the equilibrium law , when [tex]$\text{concentration}$[/tex] of any of the  reactants or the products in the reaction at an equilibrium state,  is changed, then it changes the composition of equilibrium mixture in order to minimize the effect of

Acetic acid (in excess) + [tex]$\text{alcohol}$[/tex] ⇄  [tex]$\text{ester}$[/tex] + water

[tex]$\text{Fischer esterification}$[/tex] is a reaction which involves the equilibrium. So to force the reaction towards the side of [tex]$\text{ester}$[/tex], one of the reactant is taken in excess. All this can be explained easily by applying the equilibrium law.

Answer:

They stay the same

Explanation:

Answer:

B) 2.85 ∘C

Explanation:

A) Kelvin

Answer:

Explanation:

If it is said that an electric bulb contains 60 watts, that implies that the electric bulb will have to consume a required amount of energy of about 60 joules in a second.

Mathematically:

Power rating = Energy consumed ÷ time

The electronic configuration typically implies the arrangement of electrons in atomic orbitals. The electronic configuration of Calcium (Ca) in it subshell method is:

[tex]\mathbf{Ca (20) = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 }[/tex]

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Explanation:

Water filtration is the process of removing or reducing the concentration of particulate matter, including suspended particles, parasites, bacteria, algae, viruses, and fungi, as well as other undesirable chemical and biological contaminants from contaminated water to produce safe and clean water for a specific purpose ...

Answer:

The first one

Explanation:

Both the products and reactants in the first equation have the same number of moles and will not be affected by a change in volume.

Answer:

The structural formula

Explanation:

Dear student, the image of the question is missing. SO, we will just explain from the given options; i.e. the perfect and correct option that usually explains the shape of a molecule.

TO start with drawing or model.

A drawing or model is usually a sketch of a diagram.

The empirical formula simply means the relative numerical ratios of various atoms in a compound which can be determined by an empirical formula. The ratios are also valid at the molar level too. It gives information about the element that is found in a compound.

The molecular formula showcases the types, numbers, and kinds of atoms of respective elements present in the molecular compound.

The structural formula showcases the structure which gives the shape of the molecular structure of the compound. It shows the linkage and the connection between one element present in the structure to another.

Answer:

4.17 g/mL

Explanation:

In order to determine the density of the solid, we need to know both its mass and its volume.

The mass is already given to us by the problem, 45.0 g.

As for the volume, we can determine it by using Archimedes' principle. It states that the volume of water displaced by an object when submerged is equal to the object's volume.

Finally we calculate the density of the solid:

Answer: 2 moles

Hydrogen has an atomic mass of 1.008 g/mol and oxygen has an atomic mass of 15.9993 g/mol. According to the formula there are 2 moles of hydrogen and 2 moles of oxygen in each hydrogen peroxide molecule.

Answer:

The molecule has 3 carbon atoms.

Explanation:

Answer:

The most acidic solution had a pH of 3.27.

Explanation:

In order to solve this problem we need to keep in mind that the lower the pH of a solution is, the more acidic the solution is.

If among the pH readings across the measured breakfast drinks, the lowest one was 3.27 (as the problem tells us with the range), then that drink was the most acidic one.

Conversely, the least acidic one had a pH of 3.88.

Answer:

B

Explanation:

Kinetic and electrical energy are generated when a light bulb is turned on

Answer:

This can be represented by the chemical equation: NaOH H2O→ OH- + Na.

Answer:

∆H = -763kJ

Explanation:

Using Hess's law we can determine the ΔH of a reaction from the sum of similar reactions. Using the reactions:

(1) 2PCl3(l) → 2P(s) + 3Cl2(g) ∆H = -640 kJ

(2) 2P(s) + 5Cl2(g) → 2PCl5(s) ∆H = -886 kJ

The sum of (1)/2 + (2)/2 gives:

(1) / 2 = PCl3(l) → P(s) + 3/2Cl2(g) ∆H = -640 kJ/2 = -320kJ

(2) / 2 = P(s) + 5/2Cl2(g) → PCl5(s) ∆H = -886 kJ/2 = -443kJ

PCl3(l) + Cl2(g) → PCl5(s) ∆H = -320kJ - 443kJ =

Answer:

.08 L or 80 ml

Explanation:

Use the equation V/t = V/t.

.04L / 150K = V / 300K

.04 / 150 * 300 = V

.08 L or 80 ml

Answer:

Cl₂ the limiting reactant.

6.67g of AlCl₃ can be produced.

83.5% is percent yield

Explanation:

Based on the reaction:

2 Al + 3Cl₂ → 2AlCl₃

2 moles of aluminium react with 3 moles of chlorine.

To solve this question we must find the moles of each reactant in order to find limiting reactant. With limiting reactant we can find theoretical yield. Percent yield is:

Actual yield (5.57g) / Theoretical yield * 100

That means if we find theoretical yield we can find percent yield:

Moles Aluminium: 26.98g/mol

3.11g * (1mol / 26.98g) = 0.115 moles Al

Moles Chlorine: 70.90g/mol

5.32g * (1mol / 70.90g) = 0.075 moles Cl₂

For a complete reaction of 0.075 moles of Cl₂ are required:

0.075 moles Cl₂ * (2mol Al / 3mol Cl₂) = 0.050 moles of Al

As there are 0.115 moles of Al, Aluminium is the excess reactant and Cl₂ the limiting reactant.

Moles AlCl₃ and mass: 133.34g/mol

0.075 moles Cl₂ * (2mol AlCl₃ / 3mol Cl₂) = 0.050 moles of AlCl₃

0.050 moles of AlCl₃ * (133.34g / mol) =

Percent yield:

5.57g / 6.67g * 100 =

Answer:

A

Explanation:

The sun is larger than the planets in our solar system and has far more mass and gravity than the planets.

Answer:

3) 1.25

Explanation:

I had the same question and somehow got it right :)

The new volume will be determined by molarity and which will be  1.25 ml.

The volume of an object is just a measurement of how much space it takes up.

The molality refers to the moles of a solute in relation to the mass of the solvent, whereas the molarity refers to the moles of a solute in based on the volume of the solution. It can be denoted by M.

The formula of Molarity is

[tex]M_{1} V_{1} =M_{2}V_{2}[/tex]

where, M is molarity and V is volume.

Calculation of volume.

It is given that,[tex]M_{1} = 0.1 M, M_{2} =0.0025 M.[/tex]

Now, puts the value of given data in molarity equation.

[tex]M_{1} V_{1} = M_{2} V_{2}[/tex]

[tex]V_{1} = M_{2} V_{2} /M_{1}[/tex]

[tex]V_{1}[/tex] = 0.005×25/0.1 = 1.25 ml

Therefore, the correct answer will be option 3.

To know more about molarity and volume click here.

https://brainly.com/question/20366625.

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Answer:

beryllium

Explanation:

The element is  Beryllium

Since the element tries to loose 2 electrons, the outer most shell must contain 2 electrons so that loosing  it can satisfy its octet configuration.

We can then infer that the element has 4 electrons  in its neutral state.,

Remember that,

No of electrons = Number of protons ( in a neutral atom.)

So the number of protons of this element is 4,

Recall also that

Proton number  =  Atomic number = 4

We can conclude that The element with atomic number of 4 is  Beryllium with Electron Configuration, 1s2 2s2 and condensed form as [He]2s2.

Beryllium is also known for its  exclusive +2 oxidation state in all  its compounds.

See related answer here: https://brainly.com/question/3162198