Chemistry High School

Which element has the highest electronegativity?

Answers

Answer 1

Answer:

fluorine

Explanation:

Answer 2

Answer:

The element with the highest electronegativity is fluorine with a score of 4.0 (which is the highest possible)

Explanation:

I personally haven't gotten this question yet so I hope this helps you!

Related Questions

What effect does an increase in carbon dioxide (CO 2 ) have on the concentration of hydrogen ions (H^ + ) in the blood?

Answers

Answer:

As the level of carbon dioxide in the blood increases, more H+ is produced and the pH decreases. This increase in carbon dioxide and subsequent decrease in pH reduce the affinity of hemoglobin for oxygen. The oxygen dissociates from the Hb molecule, shifting the oxygen dissociation curve to the right.

How much so you can be dissolved and 50 mL of water at 30 Celsius see chart:)

Answers

Answer:

The correct answer is - 100 grams.

Explanation:

The solubility graph is a very useful tool because it tells you the amount of solute that can be dissolved per 100 mL of water in order to have a saturated solution of potassium nitrate at a given temperature.

In order to find the solubility of the salt at 30 ∘ C , start from the 30 ∘ C

mark on the graph and move up until you intersect the curve. At the point of intersection, move left until you intersect the y axis and read off the value that you land on which is 200. However, it is for 100 ml so half the value you read:

200/2 = 100 gram .

So, solubility ≈ 100 g / 50 mL water

So, a saturated solution of solute will hold about 100 g of dissolved solute, that is of dissociated solute, per 50 mL of water at 30 ∘ C .

If you put a link, you will be reported.

Answers

Answer:

5ppm

Explanation:

there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth). So, 4. 1 part per million (ppm) for a 1g sample is 1 µg or .

I know you said no links, but this is a converter that explained it much better than I know how to

http://www.endmemo.com/sconvert/ppmug_g.php#:~:text=%C2%BB%20Microgram%2Fgram%20Conversions%3A&text=ug%2Fg%E2%86%94ppm%201%20ug%2Fg%20%3D%201%20ppm

heres a screenshot of the site (since i understand links are awful)

Which time shows the lowest composition of all green house gases?

Answers

Answer:

1750

Explanation:

Greenhouse gases are those gases that are believed to contribute to the rise in the temperature of the earth by trapping infrared rays close to the surface of the earth.

Prominent among the greenhouse gases are; N2O, methane and CO2.

From the chart, we can see that the lowest sum of concentration of greenhouse gases measured in ppm was obtained in 1750. Thus this period shows the lowest composition of greenhouse gases.

what is the name of the chemical used for bleach in sugar industries?

Answers

Answer:

Sulfur Dioxide

Explanation:

Sulfur dioxide is the chemical that, when released by factories using fossil fuels, combines with the atmosphere and can produce acid raid.

This attached picture !!

Answers

Your best way of actually getting the answer is to scale and match each one to the correct tab on the table

The higher the effective nuclear charge, the greater the -------- exerted by the nucleus of the added electron?

Answers

Answer:

Pull

Explanation:

The higher the effective nuclear charge, the more the nucleus will be gaining protons. This process makes the electrons to be drawn closer to the positive charge of the nucleus.

Thus, it leads to a greater pull exerted by the nucleus on the added electrons.

please help!!
i’m trying to go to sleep

Answers

Answer:

4) C

6) true

I am not sure about 5th one

4) evaporation rate

5) acetone

6) true

6
Use the image of an element square to answer the following
questions:
C
Carbon
12.01
What does the 6 in the upper left
represent?
What does the 12.01 represent?

Answers

Answer:

the 6 stands for the atomic number

the 12.01 stands for the atomic mass

HELP!!! WILL MARK BRAINLIEST!!!
picture attached below

Answers

Answer:

0.2 cm

Explanation:

looking at the ruler, you can see that the diameter is 0.4 cm. to get the radius, just divide by two, which gets 0.2 cm as the radius

Why can more water vapor (water molecules that are in the gas state of matter) be present in warm air than in cold air?

Answers

Answer:

Because warm air is less dense

Explanation:

identify the reaction of S8+F2-->SF8

Answers

The given reaction is a combination / synthesis reaction, since two reactants combine to form a single product

Identify the type of reactions based on the reactants. Then, predict the products for the following reactions. Make sure to balance the reactions.

a. C3H8 + O2 →

b. HBr + KOH →

c. KCl + AlBr3 →

Answers

Answer:

a) C3H8 + 502 ----> 3CO2 + 4H20.

combustion reaction

b) HBr + KOH ----> KBr + H2O

Neutralization reaction

c)AlBr3 + 3 KCl----> 3 KBr + AlCl3

Redox reaction

Forensic biologist Manning is looking at a cell sample under the microscope. The cell she sees is oval, with a long tail or flagellum. Immediately, she knows that this is a ________ cell.

red blood
skin
sperm
plant

Answers

Answer:

Sperm Cell

Explanation:

State of matter

A gas made up of homonuclear diatomic molecules escapes through a pinhole 3.98 times as fast as oxygen gas. Write the Chemical formula of the gas.

Answers

Answer:

H₂

Explanation:

To solve this question we must find, as first, find the molar mass of the homonuclear diatomic gas using Graham's law. With the molar mass we can identify this gas

Graham's law:

[tex]\frac{V_a}{V_b} =\sqrt{\frac{m_B}{m_A} }[/tex]

Where V is the speed of the gases and m the molar mass of those:

As Va is 3.98 times Vb (And mB is molar mass of oxygen gas = 32g/mol)

[tex]3.98 =\sqrt{\frac{32g/mol}{m_A} }[/tex]

15.84 = 32g/mol / mA

mA = 2.02g/mol

As is a homonuclear diatomic gas, the molar mass of the atom is 1.01g/mol. Thus, the gas is:

H₂

Which contains more carbon 4.71 g of C6H12O6 or 5.85 g C2H6O?

Answers

Answer:

5.85 g C2H6O has more carbon

Explanation:

Weight of carbon in 4.71 g of C6H12O6

[tex]4.71 * 12.01\\56.5671\\[/tex] grams

Weight of carbon in 5.85 g of C2H6O

[tex]5.85 * 12.01\\70.259\\[/tex] grams

Hence, 5.85 g C2H6O has more carbon

Which of the following best describes where cellular respiration occurs?
O A. In muscle cells
B. In the lungs
C. In every body cell
D. In the intestines

Answers

I think the answer is C

Answer:

The answer is 'C. In every body cell'

Explanation:

I hope this was helpful, have a blessed day.

A 1.0 liter flask contains 90.1 moles of water vapor at 27.0 oC. What is the pressure of the gas?

Answers

Answer:

The pressure of the gas is 224839.8 atm

Explanation:

As we know

PV = nRT

Substituting the given values, we get -

P * 1 L = 90.1 moles * 8.314 4621(75). J K−1 mol−1 * 300

P = 224839.8 atm

The pressure of the gas is 224839.8 atm

how do you make a potion of slow falling

Answers

Answer:

So you can make it longer by putting in some redstone. And this will give you a potion that will last for 4 minutes. Alright we're done it's got 4 minute slow falling potions.

Explanation:

Answer:

Ok, to make a slow falling potion, you need 1 water bottle, 1 nether wart, and 1 fantom membrane.

Explanation:

hope I could help, lmk if I did!

2. If you have 100 graham crackers, unlimited chocolate, and only five marshmallows, how many S’mores can you make? Show calculations.

Answers

Answer:

I'm pretty sure it's only 5, because once you've used up all 5 marshmallows, you can't make any more s'mores. Unless just graham crackers and chocolate counts as a s'more...

Four 22.4 samples of nitrogen are bottled at STP and placed into environments with varying temperature. Which environment yield a sample the the greatest kinetic energy?
A)100k
B) 303k
C)273 k
D)200k

Answers

mayeb a is the correct answer .....

If I dilute 250 mL of 0.50 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?

Answers

Answer:

The right answer is "0.17 M".

Explanation:

The given values are:

Volume,

V₁ = 250 mL

V₂ = 750 mL

Molarity,

M₁ = 0.50 M

M₂ = ?

As we know,

⇒ [tex]M_1 V_1=M_2 V_2[/tex]

or,

⇒ [tex]M_2=\frac{M_1 V_1}{V_2}[/tex]

On substituting the values, we get

⇒ [tex]=\frac{0.50\times 250}{750}[/tex]

⇒ [tex]=\frac{125}{750}[/tex]

⇒ [tex]=0.17 \ M[/tex]

which of the following is true about these diagrams

Answers

Answer:

N/A NO DIAGRAM

Explanation:

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

N/A NO DIAGRAM N/A NO DIAGRAM

N/A NO DIAGRAM

Which fraction contains the largest molecules?
A) diesel
B)gasoline
C)kerosene?

Answers

Answer:

Hydrocarbons

Hydrocarbons are chemical compounds that contain the elements carbon and hydrogen only. They are compounds that are obtained from the fossil fuel crude oil by a process called fractional distillation.

Fractional distillation

Fractional distillation separates the crude oil mixture into a number of smaller, different parts called fractions. The fractionating column is hot at the bottom and cool at the top. Substances with high boiling points condense at the bottom and substances with lower boiling points condense on the way to the top.

The crude oil is evaporated and its vapours condense at different temperatures in the fractionating column. Each fraction contains hydrocarbon molecules with a similar number of carbon atoms, smaller molecules nearer the top and longer molecules nearer the base of the column.

Oil fractions

The diagram below summarises the main fractions from crude oil and their uses and the trends in properties. Note that the gases leave at the top of the column, the liquids condense in the middle and the solids stay at the bottom.

Explanation:

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The substances which are generally used to generate heat and light energy on burning are called fuels. The diesel fuel contains the largest molecules. Thus option A is correct.

What is Diesel?

The diesel fuel which is also called the diesel oil is found to be a combustible liquid and it is produced from the fractions of crude oil. The diesel fuel is found to be less volatile than the gasoline.

The chemical composition of a diesel fuel is usually denoted as C₁₂H₂₄. Apart from the carbon and hydrogen atoms small amounts of 'S', 'N' and 'O' are also present in the diesel.

Here gasoline is a derivative product obtained by the fractional distillation of crude oil and it is generally used in passenger vehicles whereas kerosene is a highly flammable liquid obtained from the distillation of petrol and is less volatile than gasoline.

The gasoline contains only 4 to 12 'C' atoms per molecule and it is a lightweight hydrocarbon mixture. The number of 'C' atoms in kerosene ranges from 10 to 16 per molecule and the diesel fuel is known as the heavyweight hydrocarbon mixture with 8 to 21 'C' atoms per molecule.

Thus diesel fuel consists of larger hydrocarbon molecules than gasoline and kerosene.

Thus the correct option is A - Diesel.

To know more about Fuels, visit;

https://brainly.com/question/29526169

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Cuál es la importancia de una fórmula química y explique las clases de fórmulas con sus ejemplos respectivos.

Answers

Answer and Explanation:

Las fórmulas químicas sirven para conocer qué elementos químicos y en qué cantidad están presentes en un compuesto químico. Por ejemplo: la fórmula química del dióxido de carbono es CO₂. Esta fórmula nos indica que la molécula de dióxido de carbono está formada por 1 átomo del elemento químico carbono y 2 átomos del elemento oxígeno.

Los diferentes tipos de fórmulas químicas son: fórmula empírica, fórmula molecular, fórmula semi-desarrollada y fórmula desarrollada. Tomando como ejemplo al compuesto butano:

- Fórmula empírica: C₂H₅ (indica que hay 2 átomos de C por cada 5 átomos de H; es una fórmula mínima)

- Fórmula molecular: C₄H₁₀ (indica que en realidad cada molécula de butano tiene 4 átomos de C y 10 átomos de H).

- Fórmula semi-desarrollada: CH₃CH₂CH₂CH₃ (indica el órden en que se unen los átomos en la molécula).

-Fórmula desarrollada: ver dibujo adjunto (indica cómo están unidos los átomos dentro de la molécula. Ahora vemos los enlaces entre los átomos y que los 2 átomos de C de los extremos están unidos a 3 átomos de H y a otro C, y los dos átomos de C del medio están unidos cada uno a 2 C y 2 H).

What is the purpose of a buffer?

Answers

The main purpose of a buffer solution is just to resist the change in pH so that the pH of the solution won't be much affected when we add an acid or base into it. The added acid or base is neutralized.

Answer: A buffer solution is a solution made to prevent the pH level of something from changing when you add a base or an acid to it. For example, if you put a buffer solution in a pool, and then you put chlorine in it, the chlorine's effect on the PH level will be suppressed.

answer asap pls i give brainliest

Answers

Answer:

B. Revolution is a planet's movement around the sun causing four seasons the occur. Rotation is the spinning of the planet on its axis causing day and night.

Anyone do this worksheet? Answers?

Answers

Answer:

1. Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = 2000 g of oxygen

3. Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = 1760 g of CO₂

5. Moles of H₂O that will be produced = 45 moles of H₂O

Explanation:

Balanced equation of the reaction : 2 C₈H₁₈ + 25 O₂ ---> 16 CO₂ + 18 H₂O

1. Mole ratio of Oxygen and C₈H₁₈ = 25 : 2

Moles of oxygen required to react with 5 moles of C₈H₁₈ = 5 × 25/2 moles

Moles of oxygen required to react with 5 moles of C₈H₁₈ = = 62.5 moles of oxygen

2. Mass of oxygen required = number of moles of oxygen × molar mass of oxygen

Molar mass of oxygen = 32.0 g/mol

Mass of oxygen required = 62.5 moles × 32.0 g/mol

Mass of oxygen required = 2000 g of oxygen

3. Mole ratio of CO₂ and C₈H₁₈ = 16 : 2

Moles of CO₂ that will be produced = 5 × 16/2 moles

Moles of CO₂ that will be produced = 40 moles of CO₂

4. Mass of CO₂ that will be produced = number of moles of CO₂ × molar mass of CO₂

Molar mass of CO₂ = 44.0 g/mol

Mass of CO₂ that will be produced = 40 moles × 44 g/mol

Mass of CO₂ that will be produced = 1760 g of CO₂

5. Mole ratio of H₂O and C₈H₁₈ = 18 : 2

Moles of H₂O that will be produced = 5 × 18/2 moles of H₂O

Moles of H₂O that will be produced = 45 moles of H₂O

Make up a short story to explain jays speed and acceleration change throughout his walk. Make sure to address parts A-D

Answers

Answer:

Speed of jays increases first, again increases, decreases and then increases.

Explanation:

The speed of jays increases while moving from rest to point A and no acceleration due to constant speed. From point A to point B, the speed is continues to increase and no acceleration. From point B to point C, the speed of jays decreases and acceleration is produced in the journey due to change of speed and from point C to point D, the speed of jays again increases and acceleration is produced due to increasing the speed.

Answer:

The speed of jay's walk increases first, again increases, then it decreases and then increases due to his acceleration walk during parts A-D.

Explanation:

IS ANYONE GOOD AT CHEMISTRY?! i need help please lol

Answers

Answer:

I'm ok at it.

Explanation:

I can try to help if you need anything:)

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