Chemistry High School

Am I doing this right?

What is [OH-] of a solution
with a pH of 4.0?

Answer in M

Am I Doing This Right?What Is [OH-] Of A Solutionwith A PH Of 4.0?Answer In M

Answers

Answer 1
Am I doing this right?

What is [OH-] of a solution
with a pH of 4.0?

Answer in M
Ya

Related Questions

1
What is the mass of 0.328 mol of CO2?

Answers

A practical chemical unit for handling atoms and molecules. Since atoms and molecules are so small, it is impossible to handle and count atoms and molecules individually. Therefore, the Chemists devised a special unit to describe very large number of atoms, ions and molecules and it is called mole and is abbreviated as mol.

Answer:

use this conversation units to help you hope it helps

How many moles are in 3.0g of A1203?

Answers

Answer:

0.065 moles

Explanation:

At which position on the diagram would an apple have the greatest potential energy?

Answers

Answer:

Position 1 because it is the highest from the ground.

Hope this helps!

how would a map of a galaxy be different from a map of a city?

Answers

Answer:

A map of the galaxy would be a lot bigger and have a lot more names such as planets, stars, etc. While a city would be more basic than a whole galaxy.

What is the difference between a pure solvent and a solution? Do they have the same physical properties?

Answers

Answer:

The physical properties of a solution are different from those of the pure solvent. ... Colligative properties are those physical properties of solutions of nonvolatile solutes that depend only on the number of particles present in a given amount of solution, not on the nature of those particles.

Pure solvent v/s Solution:A solution is a homogeneous mixture consisting of a solute dissolved into a solvent while the solvent is the dissolving medium.The physical properties for both differs. Colligative properties are those physical properties of solutions of nonvolatile solutes that depend only on the number of particles present in a given amount of solution, not on the nature of those particles.Pure solvents have only one component like n-hexane, water while a solution is a mixture of solute and solvent for example: salt solution.The boiling point of the solvent in a solution is higher than that of the pure solvent.

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what is the molecular shape of N2O2?

Answers

Answer:

If you're just looking at the Lewis Structure from the perspective of the octet rule, it does appear that the structure is correct. Dinitrogen always has a lone pair of electrons which could conceivably be used for dative bonding as you suggest. So from that perspective there appears to be nothing wrong at all - other than that it doesn't exist in nature in this way.

Explanation:

The job of the ______ is to hold all of the parts of a cell together

Answers

Answer:

cell membrane

Explanation:

it holds everything together

what is gold on the periodic table of element

Answers

Answer:

Gold is element 79 and its symbol is Au.

The answer is Gold is Au

When the equation H2 + Fe3O4 = Fe + H2O is completely balanced using the smallest whole numbers, the coefficient oH2 would be A.) 1 B.)2 C.) 3 D.) 4

Answers

Answer:

H2 would have a coefficient of 2.

Explanation:

According to the balanced chemical equation, the coefficient of hydrogen is 4.

What is chemical equation?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Pls help fast, I will give brainliest!

Answers

Answer:

c

Explanation:

if the velocity of an object is doubled, its kinetic energy is multiplied by

Answers

If the velocity is doubled its kinetic energy is multiplied by four times. And there is no relationship between the velocity and potential energy. So, if the velocity is doubled, momentum also doubles.

whoever can help me will get the brainliest! Please

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Answer:

Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. ... In a predator chain, a plant-eating animal is eaten by a flesh-eating animal.

Explanation:

what is the formula of the compounds in B

pls help

Answers

Answer:

PCl3

Explanation:

The molecular formular of a compound shows the exact number of atoms of elements present in the compound. In this illustration, there is one atom of P and 3 atoms of Cl.

The formular is given as; PCl3

Answer:

PCl³

Explanation:

because there are 1 phosphorus atom and 2 chlorine atom.

UGRENT! Please help showing all work

Answers

Answer:

a. Oxygen

b. 20.39g of Al₂O₃

c. 87%

Explanation:

In order to produce 2moles of Al₂O₃, we need to make react 4 moles of Al, to 3 moles of O₂.

We determine the limiting reactant with the moles of each:

12.98g / 26.98g/mol = 0.481 moles of Al

9.6g / 32g/mol = 0.300 moles of oxygen

4 moles of Al react to 3 moles of O₂

Then, 0.481 mol may react to (0.481 . 3)/4 = 0.361 moles

We only have 0.300 moles of O₂ and we need 0.361. Oxygen is the limiting reactant.

So 3 moles of O₂ can produce 2 moles of Al₂O₃

Our 0.300 moles may produce (0.300 . 2) / 3 = 0.200 mol

Our theoretical yield is: 0.2 mol . 101.96g/ mol = 20.39 g

To determine the percent yield we calculate:

(Produced yield/ Thoeretical yield) . 100 → (17.74 /20.39) . 100 = 87%

Suppose a fox population exists in an ecosystem. Some of the foxes maintain a heavy coat year-round, while others shed their heavy coat in the summer. Summers in this ecosystem
are becoming steadily hotter because of global warming. Which members of the species will most likely be able to adapt to the changing temperatures?

subject science

Answers

Answer:

The fox who shed their heavy coat in the summer.

Explanation:

If a fox has the ability to shed its coat in the summer, it will have no difficulties adapting to new temperatures even during winter. However, the heavy-coated one will.

2) Liquid soap is dissolve in water to make a soap solution. Why is this
solution called a mixture?​

Answers

Explanation:

Soap solution is called a mixture because you're combining a ratio of liquid soap and water to make a mixture.

The sound of a trumpet ECHOES off a nearby mountain. This is which type of wave interaction?

Answers

Answer:

reflection

Explanation:

wave reflection is when a sound bounces off something it cannot go through, like echoing

Select odd one out.
I) O
II) Na
III) Cu
IV) Ag

Answers

Explanation:

0 is the odd one...............

and rest are metals and they lose electron and 0 gain electron and is non metal

I) O , is the odd one out because Na, Cu , Ag are all metals while O is a nonmetal ( look from periodic table )

Which of following is true of liquids?
Group of answer choices

The particles move at a high rate of speed

The particles have a medium amount of kinetic energy and slide past one another.

The particles vibrate in place.

The particles have a fixed volume and shape

Answers

Answer:

The particles have a medium amount of kinetic energy and slide past one another

Explanation:

If particles move at a high rate of speed its gas, and if they vibrate in place and they have a fixed volume and shape its probably a solid. So a medium amount of kinetic enery is correct.

what is nucular decay

Answers

nuclear decay is the decay of atoms on the atomic scale. “Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.”

Answer:

Nuclear decay is also called radioactive decay, and it occurs in a series of sequential reactions until a stable nucleus is reached. Nuclear reactions release much more energy—orders of magnitude more—than exothermic chemical reactions.

Explanation:

Please help ASAP!! I’m stuck!!

Which statement is true based on the formula?

6CO2 + 6H2O —> C6H12O6
+ 6O2

1. The mass of carbon dioxide plus water is equal to the mass of sugar plus oxygen

2. The mass of carbon dioxide plus water is less than the mass of sugar plus oxygen

3. The mass of carbon dioxide plus water is greater than the mass of sugar plus oxygen

Answers

Answer:

The answer of this question is 3

3 is the correct answer hope this help

Which sets of elements have similar chemical and physical properties?

1. Mg and Ra 2. Al and P 3. Be and Ba 4. Na and Cl


1 & 2 ,


2 & 3


1 & 3

2 & 4

Answers

Answer:

1 & 3

Explanation:

Elements have similar chemical and physical properties if and only if they belong to the same group of elements in the periodic table.

A group of elements in the periodic table is a family of elements, the elements in the in the same group have the same number of valence electrons in their outermost shell, share similar chemical reactivity (with slight variation within the group) and similar physical properties  (with slight variation within the group).

Magnesium, radium, beryllium and barium all belong to group 2 hence they have similar chemical and physical properties.

28g of aluminum reacts with 45g oxygen

1) complete balanced equation?
2) what is the limiting reactant?
3) how many grams of product could be formed?
4) how many grams of excess would you predict?
5) if you actually measured 50g of product, what is the percent yield?

Answers

Answer:

answer below:

Explanation:

1) 4 Al + 3 O2 --> 2Al2O3.

2) Al mol= 28/27 = 1.037mol

O mol= 45/16 = 2.812mol

Al : O

4 : 2

x : 2.812

cross multiply

4 x 2.812/2  = 5.624 mol of Al

Al is limiting reactant

3) 28/5.246 = 5.34product can be formed (not that much sure)

4) 45/ 0.5185 = 86.79

86.79 - 5.34 = 81.45g

5) 50 / 81.45 x 100 = 61.39% ( i guess)

i hope this hleps you

Explain why it is necessary to use a mixture, alumina and cryolite, rather than just
alumina

Answers

Explanation:

The mixture of cryolite and aluminium oxide has a lower melting point than pure aluminium oxide. This means a lower amount of energy is required to establish effective conditions for electrolysis and thus makes it more cost effective.

3. You believe that water boils at 212 degrees Fahrenheit (100 degrees Celsius). Write the numberon the scale from best to worst.

1. Your cousin said that he tested the temperature of water boiling and found that it was 100°C.
2. Most people you know believe that water boils at 100°C.
3. You used a thermometer to measure the temperature at which water boiled. You repeated the experiment 3 times. Each time the thermometer read 100°C.
4. You read an article in a science journal from 50 different labs around the world that have tested the temperature of water and found that it boils at 100°C in every location.

Answers

You come across an article in a scientific journal from 50 different laboratories around the globe that measured the boiling point of water and discovered that it is 100°C everywhere.

What transpires when water is heated to 100 C (This is 212 F)?

Water turns into gas around 212°F (100°C), which is the temperature at which it begins to boil (water vapor). Pressure affects the melting/freezing and boiling points. Water's boiling point changes when air pressure changes. The boiling point decreases with increasing altitude or decreasing pressure.

At 212 degrees Fahrenheit, does water boil, or at 100 degrees?

Water has a freezing point of 32 degrees Fahrenheit and a boiling point of 212 degrees Fahrenheit on the Fahrenheit scale.

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how does pentene become pentane?
How does propene become propane?​

Answers

Pentane is derived from the petroleum raw materials, natural gas and crude oil. It is generally marketed in a compressed liquefied form at 99% purity.

You have 54.32 grams of PbCl4. How many moles of PbCl4 do you have?
If you show the work that would be great!

Answers

Answer is 0.1565417867........

In a water molecule, what type of bond forms between the oxygen and hydrogen atoms

Answers

Covalent bond forms between the oxygen and hydrogen atoms.

(I attached a picture that could help)

-Hope that helps,
Good luck!

Which of the following is a product in the reaction described by the word equation below?
iron + copper(II) sulfate ----------> iron(II) sulfate +copper

Answers

Answer:

Please answer my question

An organism from the past that is related to all the organisms in the group is called?​

Answers

Answer:

phylogenic trees/phylogeny

Explanation:

the evolutionary history and relationship of an organism or group of organisms is called its phylogeny

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