Chemistry College

calculate the number of moles in 2.5 particle NaOH
​

Answers

Answer 1

Answer:

1.5055×10²⁴

Explanation:

................................

Calculate The Number Of Moles In 2.5 Particle NaOH

Related Questions

Are ALL acids and based
harmful to humans?

Answers

No they aren’t all harmful there are acids like citric acid that are ok to consume

Which of the following represents the electronic structure of three elements in the periodic table

A. 2.8.1 2.8.3 2.8.4 B. 2.8 2.8.1 2.8.2
C. 2.7 2.8 2.8.1 D. 2.1 2.8.1 2.8.8.1

Answers

Answer:

a

Explanation:

idieiiwwjjwjwjwissisisieiwiwiजिदिेिौिेजदजेजेनसनजसझधिै

Where does water pollution come from

Answers

The water pollution comes from trash

Answer:Water pollution can come from a variety of sources. Pollution can enter water directly, through both legal and illegal discharges from factories, for example, or imperfect water treatment plants. Spills and leaks from oil pipelines or hydraulic fracturing (fracking) operations can degrade water supplies.

Explanation:

Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.59 kg .

Answers

Note:
k = 10^3
1 cm^3 = 10^-2 dL

Solutions

Density = (mass)/(volume)
Volume = (mass)/(density)
Volume = (4.59 × 10^3g)/(7.68g/cm³)
Volume = 583.97 cm³
Volume = (583.97 cm³)(10^-2 dL/1 cm³)

So volume = 5.84 dL approximately

What is 47.35 dL= mL?

Answers

Answer:

4.735 litres

Explanation:

10 dL = 1 litre

47.35 dL = 47.35/10 = 4.735 litres

What kinds of questions cannot be answered by chemistry

Answers

Why matter exists

I think?

the internacional system of units is based on ?

Answers

Answer:

The international system of units is basic on 7 units.

Hope it helps you.

compared to those
5. Electrons farther away from the nucleus in an atom have
closer to the nucleus.
O A. lower energy
OB. higher energy
O C. the same energy
O D. higher or lower energy, depending on the element

Answers

Explanation:

higher or lower energy, depending on the element

Answer:

B

Explanation:

a mixture , the different parts of which vary in composition and properties​

Answers

Answer:

heterogeneous mixture

Explanation:

(a) A mixture with the same composition and properties throughout is called a homogeneous mixture. (b) A mixture, the different parts of which vary in composition and properties, is called a heterogeneous mixture.

The density of aluminum is 2.70 g/mL. What is the mass of a 15.9 cm X 11.6 cm X 7.3 cm block of aluminum?

Answers

Hi, the answer is 3510g

Step-by-step explanation:-

We know that density of a substance tells us the mass of exactly one unit of volume of given substance. In this question,

Aluminium density = 2.70g/mL

So,

V = L x W x H = 1300 cm³ = 1300 mL

m = D x V = (2.70 / 1300) = 3510g

The temperature of 150 mL of water is 25°C. What must happen for the temperature of the
water to increase to 35°C?
A. Thermal energy must be transferred to the water to increase the average kinetic
energy of the water molecules.
B. Thermal energy must be transferred from the water to decrease the average
kinetic energy of the water molecules.
C. Water must be removed to decrease the thermal energy.
D. More water must be added to increase the thermal energy.

Answers

Answer:D

Explanation:

Which of the following statements is incorrect for the reaction of 1,3- butadiene with a substituted alkene CH2=CHX when X is a nitro group?

Answers

Answer:

hugsvsbsbbsnjsjsnsbsbbzbd

The mass of an atom of element x is equivalent to the total mass of 7 hydrogen atoms

Answers

hydrogen mass is 1, the atom with mass number 7 is Lithium

Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change?

Answers

Answer:

» Water changes from colorless to a pale colored solution.

» The solubility of water reduces because a saturated solution is formed.

» The freezing point of water decreases. [colligative property]

» The boiling point of water elevates [colligative property]

» The vapour pressure of water lowers [colligative property]

Explanation:

[tex].[/tex]

a 2.00 mL sample of a substance A has a density of 18.4g/mL and a 5.00 mL sample of substance B has a density of 35.5g/mL. do you have an equal mass of substances A and b?

this question made my brain hurt. please explain :(

Answers

Answer:

no

Explanation:

make use of this formula to find the mass of each sample.

m=density*volume

what is the chemical formula of (Sodium hydroxide ) ??​

Answers

[tex]\huge{ \color{black}{ \boxed{ \color{hotpink}{Answer}}}}[/tex]

what is the chemical formula of (Sodium hydroxide ) ??

⚘ NaOHSodium hydroxide, Sodium oxidanide

[tex] \: [/tex]

[tex]\large\tt\:⚘ \: MishiChaeYoon \: ⚘[/tex]

Answer:

The formula of Sodinm hydroxide is NaOH

Hope it helps

Describe the differences between models and scientific laws and theories. (

Answers

Answer:

Scientific laws and theories have different jobs to do. A scientific law predicts the results of certain initial conditions. ... In simplest terms, a law predicts what happens while a theory proposes why. A theory will never grow up into a law, though the development of one often triggers progress on

Explanation:

Which is an example of a three
dimensional measurement of
volume?
A. 120 cubic meters
B. 120 grams
C. 120 miles per hour
D. 120 units

Answers

Answer:

It's A. 120 cubic meters

It’s a.120 cubic meters

Filtration is the most appropriate method for separating a solution of water and which substance?

A. alcohol

B. salt

C. sand

D. sugar

Answers

Answer:

Sand

Explanation:

If you get salt or sugar in your water, you have to legit desalinate it to get the water and item out. You need to evaporate the water by increasing temperature and then lower temperature to separate the substances.

If you have alcohol, you need to distill it by trapping it and stuff.

With sand, the molecules are much larger which lets you separate the substances easily.

For example, on a beach, you can slap a handful of sand in your pail, but the sand sinks to the bottom right? You can just pour out the water.

Is it me or is this year moving very fast?
Does anyone even remember Easter?

Answers

Answer:

I think you are moving fast my friend,but i don't remember Easter.

Answer:

yo fr i dont even remember last year christmas

Explanation:

Is thallium, TI, a solid, liquid, or gas?

Answers

Answer:

Thallium is a Solid

Hope it helps

Mark me as Brainliest plz!

:DD

what is joules? plz help​

Answers

That’s the SI unit of energy or work

Is this right:) please tell me

Answers

Answer:

I think that:

The tendency of an object to resist changes in motion: inertia

Attractive force:gravity

And everything else is right

Explanation:

I am not a physicist

But I passed physics with an A

Assuming equimolar quantities of reactants, which compound will react to the greatest extent with boron trifluoride (BF3) in a Lewis acid-base reaction

Answers

BF3 is considered as lewis acid because it’s the acceptor of electron

NH3 is an example of a Lewis Base that will react extensively with BF3 to form the compound BF3NH3

To solve such this we must know the concept of acid-base reaction. Therefore, NH[tex]_3[/tex] is the compound that will react to the greatest extent with boron trifluoride (BF[tex]_3[/tex]) in a Lewis acid-base reaction.

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

NH[tex]_3[/tex] is an example of a Lewis Base that will react extensively with BF[tex]_3[/tex] to form the compound NH[tex]_3[/tex] + BF[tex]_3[/tex] → [B (NH[tex]_3[/tex])F[tex]_3[/tex]].

Therefore, NH[tex]_3[/tex] is the compound that will react to the greatest extent with boron trifluoride (BF[tex]_3[/tex]) in a Lewis acid-base reaction.

Learn more about the chemical reactions, here:

brainly.com/question/3461108

#SPJ2

Which of the following words means "the degree to which a measurement is precise and reliable"?

a. variable
b. accuracy
c. parameter
d. constant

Answers

B, because that’s the simplified definition of accuracy

What is the correct clases for this drugs
Promethazine

heelp me please

Answers

Answer:

MedlinePlus Drugs Information

Explanation:

Promethazine is in a class of medication called phenothiazines

Rain soaks into the soil or runs off into oceans, rivers, and lakes. ___________ which process is this

Answers

Answer:

The water falls to the earth as precipitation, such as rain, hail, sleet, and snow. When precipitation reaches the earth's surface, some of it will flow along the surface of the land and enter surface water like lakes, streams, and rivers, as runoff. The rest of it soaks or percolates into the soil, called

1.List three (3) importance of photosynthesis to our ecosystem. a) b) c)​

Answers

Answer:

It is the number one source of oxygen in the atmosphere. It contributes to the carbon cycle between the earth, the oceans, plants and animals. It contributes to the symbiotic relationship between plants, humans and animals. It directly or indirectly affects most life on Earth

Answer:

three importance are

it helps in fixing and balancing the amount of carbon dioxide and oxygen in the atmosphere

it provides the nutrition to the plant

it helps the. plant in its growth

List of choices for questions 20-24: A. (1) CH3MgBr, (2) H3O , (3) CH3MgBr, (4) H3O B. (1) LDA, (2) CH3I, (3) H3O C. (1) CH3MgBr, (2) H3O , (3) NaBH4, (4) H3O D. (1) DIBAH, (2) H3O E. (1) NaOH, heat, (2) SOCl2, (3) CH

Answers

Answer:

h30

Explanation:

If I have a bottle of compound X at a pressure of 45 atm and temperature of 100 °C, what will happen if I raise the temperature to 400 °C?*

Answers

Answer:

55/350

Explanation:

because the answer is in the middle of 50and 400

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