What are the number of atoms in each Chemical Formula

Answer:

Reaction:

[tex]2Mg + Br_{2} >> 2MgBr[/tex]

Explanation:

Hello there, I think this is a limiting agent question.

When 3 moles of Mg is reacted with 2 moles of Br2, because of ratio, we just need 1.5 moles of Br2, so Mg is a limiting agent.

So 3 moles of Mg will make 3 moles of MgBr

Taking into account the stoichiometry of the reaction, 2 moles of magnesium bromide are formed when 3.0 moles of magnesium reacts with 2.0 moles of bromine.

The balanced reaction is:

Mg + Br₂ ⇒ MgBr₂

Then, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

On the other side, the limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to a simple rule of three as follows: if by stoichiometry 1 mole of bromine reacts with 1 moles of magnesium, how much moles of bromine will be needed if 3moles of magnesium react?

[tex]moles of bromine=\frac{1 moles of bromineX3 mole of magnesium}{1 mole of magnesium}[/tex]

moles of bromine=3 moles

But 3 moles of bromine are not available, 2 moles are available. Since you have less moles than you need to react with 3 moles of magnesium, bromine will be the limiting reagent.

Finally, the following rule of three can be applied: if by reaction stoichiometry, 1 mole of bromine forms 1 mole of magnesium bromide, 2 moles of bromine forms how many moles of magnesium bromide?

[tex]moles of magnesium bromide=\frac{2 moles of bromine*1 moles of magnesium bromide}{1 mole of bromine}[/tex]

moles of magnesium bromide= 2 moles

In summary, 2 moles of magnesium bromide are formed when 3.0 moles of magnesium reacts with 2.0 moles of bromine.

Learn more about stoichiometry of the reaction:

Answer:

Permeability.

Explanation:

The ability of a rock or soil to allow water to flow through it is call permeability. Materials such as gravel that allow the flow of water are permeable. Materials such as clay or granite that do not allow the flow of water are impermeable.

Answer:

This is a mixture.

Explanation:

While you can no longer see the salt when it's dissolved, it's still there! It's just in tiny, tiny, invisible to the eye molecules. It's now a mixture of H20 molecules and NaCl molecules in a solution :)

The water doesn't bond to the salt, so it's not a compound.

It's not just one element, it's a mixture of many!

It's not a pure substance since it's NaCl AND H2O.

Answer:

pH = 3.69

Explanation:

HCl is a strong acid. It will disscociates completely into dissoluted ions such that,

[tex][H^+]=2\times 10^{-4}\ M[/tex]

The formula for pH is given by :

[tex]pH=-log[H^+]\\\\pH=-log(2\times 10^{-4})\\\\pH=3.69[/tex]

So, the pH of the solution is 3.69.

The answer to your question is 4.

Answer:

The answer to your question is: 71 g of Chlorine

Explanation:

Na = 46 g

Cl = ?

NaCl = 117 g

Equation

                     2 Na     +     Cl₂   ⇒   2 NaCl          

                     46g              X              117g

If we consider the law of conservation of matter, we know that the mass of the reactants equals the mass of the products, then

                   mass Na + mass Cl₂  = mass NaCl

                    46 g + X = 117

                    X = 117 - 46

                   x = 71 g of Chlorine        

Answer:

9.03×10²³ molecules of H₂O

Explanation:

To solve this, we need to propose the reaction

NH₄ClO₄  →  ammonium perchlorate

Al → Aluminum

Those are the reactants; the reaction is:

6NH₄ClO₄  +  10Al →  5Al₂O₃ + 3N₂ + 6HCl + 9H₂O

Then, water is one of the products. If we see the reaction, is a redox type.

Ratio is 6:9. In conclussion:

6 moles of ammonium perchlorate can produce 9 moles of H₂O

Then 1 mol of salt, may produce (1 . 9)/6 = 1.5 moles of water

Let's count the molecules:

1.5 mol . 6.02×10²³ molecules /mol = 9.03×10²³ molecules of H₂O

Answer:

Explanation:

close to freezing cause once i go to bed my pillow will always stay cold and i can finally have all my blankets on and not over heat and not to mention when i play sports free air conditioning

Answer:

The piece of wood was less dense than the water.

Explanation:

When an object has a lower density than water, it will float on the water.

Answer: Ok I think The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Carbon, or 12.0107 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles Carbon and gram. 12 grams

This means that the atomic mass or atomic weight (12 grams) of carbon is equal to exactly 1 mole of carbon.

hope this helps have a awesome night/day❤️✨

Explanation:

There are 36 grams in 3.00 moles of carbon.

HOW TO CALCULATE MASS:

Learn more at: https://brainly.com/question/15743584?referrer=searchResults

Answer:

They both have atmospheres. Also, both planets have more than one moon.

Answer:

wood

Explanation:

I think

I hope it helps

Answer:

The answer is a trench

Answer:

[tex]\boxed {\boxed {\sf AlN}}[/tex]

Explanation:

The goal when forming compounds is to achieve a net charge of 0.

We are given aluminum with a charge of 3+  and nitrogen with a charge of 3-.

These charges are equal and opposite, so one of each will equal 0.

Therefore, we do not need any subscripts. List the metal's symbol (aluminum) then the nonmetal.

Th formula for the compound, which is aluminum nitride, is AlN.

hmm, i not sure i come back later with the answer.

Answer:

it is the moisture in the air

Explanation:

if we buy a dehumidephire we see that it collets water from the air

Answer:

Humidity describes the amount of water vapor or water molecules in the air. Weather scientists use the term “relative humidity,” which Joe Sobel, a meteorologist and senior vice president at Accuweather described as “a comparison of the amount of moisture in the air versus the amount of moisture the air could hold.”

Explanation:

The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Given that,

Based on the above information, the calculation is as follows:

Here the volume should be 80ml

Therefore we can conclude that The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Learn more: brainly.com/question/16911495

Answer:

Explanation:

Under good conditions the seedling can thrive in soil that does not have any clay as long as it gets the proper nutrients and right amount of sunlight/water that it needs. Clay in soil can provide the nutrients necessary for seedlings to thrive but can also cause many negatives. One such con of using clay is that it does not absorbe water very well, this ultimately causes the soil to become waterlogged and drowns the plants as no oxygen can pass through. This would ultimately kill the plants.

Answer:

A lightning

Explanation:

Answer:

0.17907

Explanation:

Answer:

d

Explanation:

Answer:

https://newshamchem.weebly.com/uploads/2/2/0/3/22035226/molarity_&_worksheet_answer.pdf

question 9.

Explanation:

Answer:

.0125 moles

Explanation:

Molarity = moles/volume

.05 M = moles/.250L

.0125 = moles

Answer:

c.) 22.4 L/1 mole

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

The standard values for a gas are as follows:

Standard pressure of a gas = 1 atm

Standard temperature of a gas = 273K

According to the information in the question, n = 12.3 moles

Using PV = nRT

V = nRT/P

V = 12.3 × 0.0821 × 273/1

V = 275.68 L

Based on this value of volume in liters for 12.3moles of Br gas, the volume per mole at standard temperature and pressure will be 275.68/12.3 = 22.4 Litres per mole. Hence, the answer is 22.4 L/1 mole.

Answer:

The liquid decreases in temperature and its particles lose kinetic energy.

Temperature is proportional to kinetic energy, so if temperature decreases, kinetic energy decreases. Energy has been removed from the liquid, because it is in the air

Using the concept of Avogadro's number, the number of atoms present is 4.4 * 10^24 atoms.

Professor Avogadro provided a nice way of calculating the number of atoms in a molecules by the use of the Avogardro's number. Now we know that 1 mole of a substance contains about 6.02 * 10^23 atoms, molecules ions etc.

Hence;

1 mole of sulfur dioxide contains 6.02 * 10^23 atoms

7.32 moles of sulfur dioxide contains 7.32 moles  * 6.02 * 10^23 atoms/1 mole

= 4.4 * 10^24 atoms.

Learn more about Avogadro's number: https://brainly.com/question/1445383?

Answer:

The cholesterol in your blood comes from two sources: the foods you eat and your liver. Your liver makes all the cholesterol your body needs.

Answer:

na2 co3

Explanation:

sodium carbonate formula

Answer:

your answer is C.

Explanation:

this is what it would be like

O

|

|

Na+ C Na+

/ \

/ \

O- O-