pls help my teacher said i have 10 min only

Answer:

i couldnt draw it but here is a picture

Explanation:

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.

Answering so you can give the other person brainliest!

Answer:

ydrt

Explanation:

u

Answer:

B) 2.85 ∘C

Explanation:

A) Kelvin

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:

B

Explanation:

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

Answer:

The answer is C.

Explanation:

Hello there!

In this case, since the ionization of HCl to H+ and Cl- ions decrease the pH of a solution as it gets more acidic due to the H+ ions; it is possible to infer that the presence of Cl- ions in the solution does not modify the pH of the solution because it is not able to react with water to form HCl and then undergo the aforementioned reaction because HCl is a strong acid so the ions are not able to undergo the reverse ionization.

In such a way, the answer will be C.

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Answer:

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

Explanation:

please smash brainliest on my doorstep

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:

The same amount of two different liquids you used in the container will have different densities because they have different masses. The liquids that weigh more (a higher density) will sink below the liquids that weigh less (a lower density).

Material: Density (g/cm3)

Light Corn Syrup: 1.33

Vegetable Oil: 0.92

Explanation:

Science

Answer:

For example, N2O4 is referred to as dinitrogen tetroxide, not dinitrogen tetraoxide, and CO is called carbon monoxide, not carbon monooxide.

...

Binary molecular (covalent) compounds.

Prefixes used in chemical nomenclature

prefix number of atoms

tetra- 4

penta- 5

hexa- 6

Explanation:

In the number 48.93, the digit that is estimated is the digit "9."

In the number 48.93, the digit "9" is estimated because it falls after the decimal point. When a decimal number, the digits to the right of the decimal point represent fractional or decimal values.

These digits can be estimated or rounded to a certain degree of accuracy, depending on the context or the desired level of precision.

The digit "9" is the last digit after the decimal point, it is likely an estimated value. It means that the actual value could be slightly higher or lower than 9, depending on the level of precision required.

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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: 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:

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 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:

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.

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Answer:

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

Answer:

I have no idea but I think its 15 ;-;

Explanation:

Answer:

86.85°C

Explanation:

K = °C + 273.15

360K − 273.15 = 86.85°C ≈ 87°C

Answer:

They stay the same

Explanation:

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]

Answer:

The molecule has 3 carbon atoms.

Explanation:

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:

.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:

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.