How many grams of sodium hydroxide are present in 250.0 mL of a 0.300 M NaOH solution?

Answers

Answer 1
4g of NaOH
………………………………….

Related Questions

what is the hybridization at each carbon atom in the molecule?

Answers

The carbon atoms are sp3 hybridized.

Hope this helps!


3. A baseball bat striking a baseball and sending it toward left field is an example
of energy transformation. True or false. Please help it’s due tomorrow!!!

Answers

Answer:

TRUE

Explanation:

What do the electron configurations of the elements Mo and Pt have in common?

Answers

Answer:

All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.

Explanation:

What is the value of c?
56.70

Answers

Due to the lack of information provided, the best I can give you is this:

In Chemistry, the letter c most commonly refers to specific heat, which is present in the ratio J/g°C.

Hope it helps :)

1. A substance which takes the shape and volume of its container is a?
Solid
Liquid
Gas
Crystal

Answers

Answer:

Liquid

Explanation:

Liquid

Answer:

Gas

Explanation:

Gas takes the shape and volume of its container because it doesn't have a definite shape or volume.

Liquid is wrong because it takes the shape of its container, but has a definite volume.

Gas is wrong because it has a definite shape and volume.

Crystal is definitely wrong.

what are colloids ? ​

Answers

A solution in which the size of solute particles is intermediate between those in true solution and suspension is called as Colloids.

Answer: A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance.

Hope it helps , have a nice day :>

is a single cell the smallest structure that carries out our activities nesscesary for life

Answers

yep, the cell is the smallest unit in a living organism that is capable of carrying out all of the activities of life.

Write the balanced chemical equation for the following reaction. Also, classify the
reaction as sythesis, decomposition, single replacement, double replacement, or combustion.
aluminum sulfate + barium chloride —> aluminum chloride + barium sulfate

Answers

Answer:

Reaction: Al2(SO4)3 + 3BaCl2 --> 2AlCl3 + 3BaSO4

Type: Double Replacement

Explanation:

1.) First you need to understand what the different reactions are

a.) Synthesis: is a reaction where two or more substances will combine with each other to make one product.

          Ex:  A + B → AB

b.) Decomposition: when one compound breaks down into two or more substances. (Opposite of synthesis)

          Ex:  AB → A + B

c.) Single Replacement: when one element replaces another one in a reaction

          Ex:  A + BC → AC + B

d.) Double Replacement: when the positively charged cations and negatively charged anions of the reactants trade places. Normally this will be the two outer elements combining and the two inner ones combining.

          Ex: AB + CD →  AD + CB

e.) Combustion: when a substance reacts with oxygen gas and releases energy as light and heat.

         Ex: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)

2.) From there you can write out the formula of the different reactants and products and balance the equation.

The reaction is at dynamic equilibrium.

N2 + 3H2 ⇌ 2NH3

Which statement is correct?

(1 point)

The solution has the same concentrations of nitrogen gas and ammonia.
The solution has the same concentrations of nitrogen gas and ammonia.

Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
Nitrogen and hydrogen combine at the same rate that ammonia breaks down.

The solution has the same concentrations of nitrogen and hydrogen gases.
The solution has the same concentrations of nitrogen and hydrogen gases.

Both directions of the reaction have stopped.
Both directions of the reaction have stopped.

Answers

Considering the definition of dynamic equilibrium, the correct answer is second option: Nitrogen and hydrogen combine at the same rate that ammonia breaks down.

Chemical equilibrium is a state of a reaction in which no changes are observed as time passes, even though the reaction continues. That is, the chemical equilibrium is established when there are two opposite reactions that take place simultaneously at the same speed.

So, dynamic equilibrium is a chemical equilibrium, which occurs when two reversible processes happen at the same speed in both directions. In this way, the concentrations of the reactants and products remain constant over time.

In summary, the correct answer is second option: Nitrogen and hydrogen combine at the same rate that ammonia breaks down.

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difference between condensed milk and evaporated milk

Answers

The major difference that sets these two canned milk products apart is sugar content; sweetened condensed milk, as the name implies, is always sweetened, while evaporated milk is unsweetened

Write the balanced equation!!
Acid-Base Reactions: HA + BOH → BA + H2O
Sulfuric Acid, H2SO4 (aq) + potassium hydroxide (aq) potassium sulfate (aq) + water (l)

Answers

Answer:

H2SO4 + 2KOH + K2SO4 + 2H2O

Explanation:

there are 2 potassium atoms on the left side so gotta balance that and 2 for the H in the KOH so we have to add a 2 for the hydrogen in H2O..I hope this is useful..


An atom, X, contains 16 protons.
Which statement about Z is correct?Explain why.
A) It cannot form an ion.
B) It contains 6 electrons in the outer shell.
C) It contains 6 neutrons.
D) It had relative atomic mass of 16.

Answers

Answer:

B

Explanation:   as protons no. = electrons no.= atomic number(Z)

what do you do if you add a bit too much solvent when filling the volumetric flask to the mark

Answers

If excess solvent is added, discard the entire solution and begin the process of preparing the solution afresh.

It is common to prepare solutions using a standard volumetric flask. In this method, the required amount of solid or liquid is added to the volumetric flask and made up to mark with solvent.

Sometimes, it is possible to mistakenly exceed the mark as the solvent is added. In such cases, you must discard the entire solution and begin the process of preparing the solution afresh.

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AgNO3(aq) + NaCl (aq) —> AgCl (s) + NaNO3 (aq)

The equation represents a __ reaction.

A. synthesis
B. decomposition
C. neutralization
D. double replacement

Answers

Answer:

D

Explanation:

double replacement

the reactants decompose to form new substances by exchange of radicals

A chemical reaction is when substance are changed into other substances.

True or False

Answers

Answer:

True

Explanation:

coz it is when one or more substances are mixed to produce one substance

Answer:

true

Explanation:

when its asking for a chemical reaction its asking for if it changed or had any effects like changing color or having weird effects on things it is mixed with or touches so its true

Can someone help me with this chemistry question?

Answers

Answer:

B no. is the answer because

Explanation:

acids increase the hydrogen ion concentration, which provides more ionsan acid comes in contact with a metal, the acid steals free electrons away. That loosens the bonds holding metal atoms in place, so the metal dissolves. That's a chemical change, so the ability of acids to dissolve metals is a chemical propertyWhen a strong acid is neutralized by a strong base there are no excess hydrogen ions left in the solution. The solution is said to be neutral as it is neither acidic nor alkaline. The pH of such a solution is close to a value of 7; the exact pH value is dependent on the temperature of the solution.

So this can probably be the the answer

Hope my answer helps

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Calculate the molar mass of carbon tetrachloride, CCl4.

Answers

the answer is 153.82 g/mol

An electron moved from a lower energy level to a higher energy level. What most likely happened during the transition? (4 points)

Group of answer choices

A random amount of light was released.

A fixed amount of energy was absorbed.

A fixed amount of energy was released.

A random amount of light was absorbed.

Answers

Answer:

A. A random amount of light was released

Explanation:

A random amount of light was released. Hence, option A is correct.

What are electrons?

An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom) or bound to the nucleus of an atom. Electrons in atoms exist in spherical shells of various radii, representing energy levels. The charge on a single electron is considered the unit electrical charge.

Electrons are sub-atomic particles that occupy energy levels in an atom of any chemical element. These electrons may move from one energy level to another.

Electrons may move from a lower energy level or ground state to an excited state or high energy level, or else move from a higher energy level to a lower energy level.

When an electron moves from a lower energy level to a higher energy level energy is absorbed by the atom, and when the movement is from a higher energy level to lower energy is released mainly as light.

Hence, option A is correct.

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if 15 grams of carbon is present at the beginning of a reaction,how many grams of carbon will be present in the products?

Answers

The law of conservation states that the mass of the element remains the same during the course of the reaction.

The law of reaction conformed by the following:-

Mass of reactantMass of product

According to the question, the amount of carbon is 15g in the reactant and the amount will remain same at the end of reaction, which is product that is 15g.

Hence, the amount remain same in the reaction that is 15g.

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Which of the following best describes the relationship between a
mutation and a resulting change in the coat color of a mouse?

Answers

Answer:

A I think

Explanation:

what is distillation used to seperate

Answers

Distillation is used to separate liquids from nonvolatile solids as in separation of alcoholic Liquors from fermented materials or in the separation of two or more liquids having different boiling points as in the separation of gasoline Carrison and lubricating oil from crude oil

Answer: It is used to separate a solvent from a solute.

Explanation:

What is mechanical energy?

The energy that is associated with the motion or position of an object
The energy that travels in waves from the moon
Any energy that travels through a medium like water
The stored energy in a substance like oil or gasoline

Answers

Answer:

The energy that is associated with the motion or position of an object

or simply kinetic or potential Energy

oncepts
4 List What are some of the physical properties
of stars?

Answers

Answer:

Brightness. Two characteristics define brightness: luminosity and magnitude. ...

Color. A star's color depends on its surface temperature. ...

Surface Temperature. ...

Size. ...

Mass.

Explanation:

there

liquid bromine easily evaporates. explain what happens to the particles when a liquid evaporates​

Answers

Answer:

they gain enough energy to break away from the bonds that keeps them a liquid

also the particles diffuse away

Explanation:

When liquid bromine evaporate,

Then space or distance between its particle increases.The bromine particles start moving freely when it evoporates .The inter-molecular force of attraction between particles is increases when liquid bromine evaporates.

Why liquid bromine easily evaporates?

The liquid bromine easily evaporates because of following reasons:

The liquid bromine is more denser then water.Its melting and boiling point is -7°C and 58.9°C.The liquid bromine present in the form liquid at room temperature that is why it is easy evaporates.

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When a glucose molecule loses a hydrogen atom in an oxidation-reduction reaction, the glucose molecule is ________

Answers

Answer:

Important

Explanation:

Can someone help me with this chemistry question please?

Answers

C. Energy use

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How does the microscopic arrangement of particles affect the microscopic behavior of the solution?

Answers

Answer:

In a solid, the particles pack together as tightly as possible in a neat and ordered arrangement. ... With an increase in temperature, the particles gain kinetic energy and vibrate faster and more strongly. The attractive force in solids need not be stronger than in liquids or gases

can someone plaexplain to me what is 'first ionisation energy' in simple words coz my small brain can't understand it​

Answers

[tex] \: \: \: \: \: \: [/tex]

the first ionization energy of an element is the energy needed to remove the outermost, or highest energy, electron from a neutral atom in the gas phase.

hope it helps

[tex] \: \: \: \: \: [/tex]

An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?

Answers

The density of an object is the amount of mass per unit volume. The idea of putting the stone into the water in a graduated cylinder is that this tells you the volume of the stone. Since the water raised increased from the 2 mL mark to the 7 mL mark after putting it in the cylinder, the volume of the stone must be equal to 5 mL of water. At room temperature, 1 mL of water has the same volume as 1 cubic centimeter (cm^3), so the stone also has a volume of 5 cm^3.

To get the density, divide the mass of the stone by its volume:

D = m/v = (25 g)/(5 cm^3) = 5 g/cm^3

The density of the stone is 5 grams per cubic centimeter.

Hope this helps!

Which of the following moves away from the central nervous system?
Afferent Neuron
Efferent Neuron
Proxima Neuron
Distal Neuron

Answers

Answer:

distal

Explanation:

you c a n remember that by the word distance

Distal Neuron would be correct
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