What is the molarity of a 750 milliliters solution containing 54.0 grams of KBr (help me please)

Answers

Answer 1

Answer: The molarity of KBr solution is 0.605 M

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L.

The formula used to calculate molarity:

[tex]\text{Molarity of solution}=\frac{\text{Given mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (mL)}}[/tex]       .....(1)

Given values:

Given mass of KBr = 54.0 g

Molar mass of KBr = 119 g/mol

Volume of the solution = 750 mL

Putting values in equation 1, we get:

[tex]\text{Molarity of solution}=\frac{54.0\times 1000}{119\times 750}\\\\\text{Molarity of solution}=0.605M[/tex]

Hence, the molarity of KBr solution is 0.605 M


Related Questions

For an ideal gas, evaluate the volume occupied by 0.3 mole of gas.

Answers

Answer:

V=0.3×22.4=6.72 liters hope this helps

Solve: The following question in the picture

Answers

Answer:

D is the answer to your question in my opinion

Answer:

I think it is option A

Explanation:

XY 2 will be three molecules which is only a or b. As molecules are usually in a ddiagr like a, I would go with option a

Use the earthquake distribution map and what you know about boundaries to answer the question

Answers

I believe the answer is Nazca plate converging with the South American plate if you’re doing that test

Reaction of hypochlorous acid and ammonia is product-favored system at equilibrium. Answer A: Reaction of hypochlorous acid and ammonia is product-favored system at equilibrium. A Reaction of hypochlorous acid and ammonia is reactant-favored system at equilibrium. Answer B: Reaction of hypochlorous acid and ammonia is reactant-favored system at equilibrium. B Reaction of hypochlorous acid and ammonia yields pH 7.00. Answer C: Reaction of hypochlorous acid and ammonia yields pH 7.00. C No reaction occurs between hypochlorous acid and ammonia. Answer D: No reaction occurs between hypochlorous acid and ammonia. D Further data are needed to draw a conclusion about a prospective reaction.

Answers

Answer:

A. True

B. False

Explanation:

Reaction between hypochlorous acid and ammonia does not yields a Ph value of 7.00 , this value is defined to water and no other reaction can yield exactly this Ph value. The acid reaction will give a Ph value below 7 while a base reaction will give Ph value of above 7.

please explain what a ecosystem is.​

Answers

Explanation:

An ecosystem includes the environment, living and non-living things and how they interact with each other.

For example, in a Reef ecosystem there

are marine plants and animals that depend on each other and their surrounding to survive.

Does a reaction involving an acid and a base have to take place in a water environment? Justify your answer.

Answers

Answer:

Yes, because the water solvent is better

Explanation:

Hope this helps

what is large intestine​

Answers

Explanation:

The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes, creating stool. As stool enters the rectum, nerves there create the urge to defecate.

hope it helps.stay safe healthy and happy!!!

WHAT IS EXOTHERMIC EXPLAIN​

Answers

Explanation:

An exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." Exothermic reactions usually release heat and entail the replacement of weak bonds with stronger ones.

hope it helps

stay safe healthy and happy..

Answer:

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.

Explanation:

I hope this helps u have a nice day ☘

1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.




ELEMENT, ELECTRONEGATIVITY, TYPE OF ION, ELECTRICAL CONDUCTIVITY, BRIGHTNESS


X Low Electro cation ion high conduc brightness yes


Y High Electro anion ion none conduc brightness no






According to the data in the table, answer the following questions.




a. If you were to carry out an experiment with these 2 hypothetical elements, write a hypothesis to differentiate them and write another hypothesis about how they would react with oxygen and water.








HYPOTHESIS 1:






HYPOTHESIS 2:






In four steps, design an experiment (write step 1, step 2, step 3 and step 4) to check and verify what types of links would form these elements X and Y if after a series of reactions these elements join in some type chemical bonding.






STEP 1








STEP 2








STEP 3








STEP 4








b. A series of reactions of elements X and Y are given below, complete these reactions bearing in mind that X has an oxidation number +2 and Y has an oxidation number +6.




I. X + O2  XO






II. Y + O2  YO3.






III. XO + H2O  X(OH)2






IV. YO3 + H20  H2YO4.






V. X(OH)2 + H2YO4  A + H2O.






d. Considering the result (A) in reaction number 5, answer:




I. What type of chemical bond do you think A has?




II. What are its physical and chemical properties?




III. Design a four-step experiment so that you can identify the type of chemical bond that substance A obtained in reaction 5 has. The design must contain at least 2 variables to be measured and 2 hypotheses with these variables.

Answers

Answer:

gas and element and compound

Explanation:

because it's different and more power so the elements

Write the net ionic equation. Don't worry about identifying the state of matter. 2 NH4Cl (aq) + 1 Mg(OH)=2NH3 (g) + 2H2O (l) + 1 MgCl2 (aq)

Answers

Answer:

2NH4^+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l)

Explanation:

Molecular balanced reaction equation;

2NH4Cl (aq) + Mg(OH)2---->2NH3 (g) + 2H2O (l) + MgCl2 (aq)

Complete ionic reaction equation;

2NH4^+(aq) + 2Cl^-(aq) + Mg^2+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l) + Mg^2+(aq) + 2Cl^-(aq)

Net Ionic reaction equation;

2NH4^+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l)

1) 2C2H6 + 7O2 --> 4CO2 + 6H2O
a) How many moles of O2 are required to react with 24 moles of C2H6?
b) How many grams of C2H6 are required to react with 12 moles of O2?
c) How many grams of O2 are required to react with 200g of C2H6?

Show how you got the answer

Answers

Answer:

a).

[tex]2 \: moles \: of \: ethane \: react \: with \: 7 \: moles \: of \: oxygen \\ 24 \: moles \: react \: with \: ( \frac{24 \times 7}{2} ) \: moles \\ = 84 \: moles[/tex]

b).

[tex]2 \: moles \: react \: with \: 7 \: moles \\ ( \frac{12 \times 2}{7} ) \: moles \: react \: with \: 12 \: moles \\ = 3 .43 \: moles \\ 1 \: mole \: weighs \: 30 \: g \\ 3.43 \: moles \: weigh \: (3.43 \times 30) \\ = 102.9 \: g[/tex]

c).

746.7 g

The metal aluminum coils in an air conditioner conduct thermal energy from inside the house and release it outside the house. What can be said about the coils when they are accepting the heat inside the house?

Answers

Answer:

c

Explanation:

Answer:
B: They must be cooler than the air inside the house.

Explanation:

I got it right on edge!

por que el petroleo es un no recurso renovable

Answers

Answer:

Por ejemplo, el petróleo o el carbón son ejemplos de recursos no renovables porque, aunque se forman mediante un proceso natural, este necesita demasiado tiempo. ... Esos combustibles fósiles provienen de materia orgánica, pero tardan cientos de miles de años en producirse.

In which situation would hydrogen bonding be present?​

Answers

Answer:

Water ?

Need more info.

Water is [tex]H_{2}[/tex]O

Explanation:

Answer:

Hydrogen bonding occurs when a protonic H is bonded to F, O or N and there must be a lone pair of electron in the F, O or N atom.

what type of volcanic eruption produce ash fall?​

Answers

Composite volcanoes are the types of volcanoes that produce ash fall.

Explanation:

I would say explosive eruptions caused by decompression of the dissolved gases in the magma. The Mt Pinatubo eruption is an example of a massive ash fall that eventually closed down an American base in the Philippines. And just recently the island of St. Vincent suffered major damage from ash fall due to a volcanic eruption.

N is another unit for mass True or False

Answers

N is newtons so it would be false

Mass x height x gravity is the formula to calculate:

Answers

Answer:

Potential energy

Explanation:

[tex]p.e = mgh[/tex]

In a chemical reaction, the number of moles of the reactants
A.
should always be equal to the number of moles of the products.
B.
depends on the amount of product that is formed.
C.
should never be equal to the number of moles of the products.
D.
may or may not be equal to the number of moles of the products.

Answers

Answer:

may or may not be equal to the number of moles of the products.

Explanation:

A chemical reaction involves the interaction between reactants to yield products. The number of moles of reactants and products in the system depends on the stoichiometry of the reaction.

The balanced reaction equation shows us the number of moles of reactants and products involved in the reaction.

Hence, in the balanced chemical reaction equation; the number of moles of reactants may or may not be equal to the number of moles of the products.

De acuerdo con la primera ley de kihrechhoff determina las intensidades desconocidos así como su sentido. Ayudaaaa:(

Answers

oh sorry I'm American I can't understand that

Explanation:

but...thanks for points hehe

How do hydrogels retain water?

Answers

The combination of the polymer opening up and the water molecules sticking to it make a solution of the hydrogel get thicker and more viscous (sticky). Disposable nappies make use of the ability of hydrogels to take up and retain water, even under pressure.

HOPE IT HELPS YOU ☺️☺️☺️☺️✌️.

PLEASE MARK ME AS BRAINLIEST.

Answer:

The combination of the polymer opening up and the water molecules sticking to it make a solution of the hydrogel get thicker and more viscous (sticky). Disposable nappies make use of the ability of hydrogels to take up and retain water, even under pressure.

Explanation:

Question 8 of 10
Which functional group is within the compound shown below?
R-OH
A. Carbonyl
B. Amino
C. Ester
D. Hydroxy

Answers

Answer:

Hydroxyl (alcohol compound)

Explanation:

*view photo*

D. Hydroxy

A hydroxy or hydroxyl group is a functional group with the chemical formula -OH and composed of one oxygen atom covalently bonded to one hydrogen atom.Hydroxyl groups are polar, and the oxygen side is always negative, while the hydrogen side is always positive.The functional group of the alcohols is the hydroxyl group, –OH.For example: Methanol is an alcohol containing hydroxyl functional group.

Therefore, the correct option is option D.

Learn more:

brainly.com/question/696051

when monomers are joined together, what do they form?

Answers

The monomers combine with each other via covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.

Band f d didn’t em just. D s x. D

Write the formula for Magnesium sulphate​

Answers

MgSO4 is the formula for magnesium

How many Carbon Atoms are there on the PRODUCT SIDE

Answers

Answer: There are 6 carbon atoms on the product side.

Explanation:

The given reaction equation is as follows.

[tex]6CO_{2} + 6H_{2}O \rightarrow C_{6}H_{12}O_{6} + 6O_{2}[/tex]

Species present on the left side of an arrow in a chemical equation depicts the reactants.

Species present on the right side of an arrow in a chemical equation depicts the products.

Hence, products in the given reaction equation are [tex]C_{6}H_{12}O_{6}[/tex] and [tex]6O_{2}[/tex].

Therefore, there are 6 carbon atoms present on the product side.

Thus, we can conclude that there are 6 carbon atoms on the product side.

3. What are the planets called that are mostly made of gas?

Answers

Explanation:

The gas planets are Jupiter, Saturn, Uranus and Neptune.

Answer:

A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core. The gas giants of our solar system are Jupiter, Saturn, Uranus and Neptune. These four large planets, also called jovian planets after Jupiter, reside in the outer part of the solar system past the orbits of Mars and the asteroid belt. Jupiter and Saturn are substantially larger than Uranus and Neptune, and each pair of planets has a somewhat different composition.Although there are only four large planets in our solar system, astronomers have discovered thousands outside of it, particularly using NASA's Kepler Space Telescope. These exoplanets (as they are called) are being examined to learnmore about how our solar system came to be.

Explanation:

hopeit helps...

How many grams of ammonia (NH3) can be produced by the synthesis of excess hydrogen gas (H2) and 253.8 grams of nitrogen gas (N2) in a synthesis reaction?

Answers

Answer:

308.2 g of NH₃.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

3H₂ + N₂ —> 2NH₃

Next, we shall determine the mass of N₂ that reacted and the mass of NH₃ produced from the balanced equation. This can be obtained as follow:

Molar mass of N₂ = 2 × 14 = 28 g/mol

Mass of N₂ from the balanced equation = 1 × 28 = 28 g

Molar mass of NH₃ = 14 + (3×1)

= 14 + 3 = 17 g/mol

Mass of NH₃ from the balanced equation = 2 × 17 = 34 g

Summary:

From the balanced equation above,

28 g of N₂ reacted to produce 34 g of NH₃.

Finally, we shall determine the mass of NH₃ produced by the reaction of 253.8 g of N₂. This can be obtained as illustrated below:

From the balanced equation above,

28 g of N₂ reacted to produce 34 g of NH₃.

Therefore, 253.8 g of N₂ will react to produce = (253.8 × 34)/28 = 308.2 g of NH₃.

Thus, 308.2 g of NH₃ were obtained from the reaction.


What is most likely to happen when two fluorine (F) atoms bond?

A: Electrons will be equally attracted to. both atoms.

B: One atom will attract electrons more strongly
than the other.
help asap please

Answers

its A- Electrons will be equally attracted to both atoms :)
The answer is A (The electrons will be equally attracted to both atoms).

What is the percent composition of phosphorus in the compound P3CI8

Answers

Answer:

24.68%

Explanation:

Molar mass of phosphorous / molar mass of P3Cl8

= 3 x 30.97 / (3 x 30.97) + (8 x 35.45)

= 92.91/376.51 x 100

= 24.676%

=24.68% (2dp)

What volume will 106.476 g N, gas at STP occupy?
O 85.1808L
O 170.362L
O 7.60543L
0 3.80271L

Answers

Answer:

170.362 L

General Formulas and Concepts:

Atomic Structure

Reading a Periodic TableMoles

Gas Laws

STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

Identify variables

[Given] 106.476 g N

[Solve] L N

Step 2: Identify Conversions

[STP] 1 mol = 22.4 L

[PT] Molar Mass of N: 14.01 g/mol

Step 3: Convert

[DA] Set up:                                                                                                       [tex]\displaystyle 106.476 \ g \ N(\frac{1 \ mol \ N}{14.01 \ g \ N})(\frac{22.4 \ L \ N}{1 \ mol \ N})[/tex][DA] Divide/Multiply [Cancel out units]:                                                           [tex]\displaystyle 170.24 \ L \ N[/tex]

Si se hace reaccionar CH3CH3 (etano) con cloro, en presencia de luz ultravioleta, los productos obtenidos en este paso son

Answers

Answer:

La reacción de etano, CH₃CH₃ y cloro, Cl₂ en presencia de luz solar se conoce como reacción de halogenación.

Los radicales de cloro se forman cuando el cloro se expone a la luz solar a continuación;

Cl₂ → 2Cl *

Se forma un radical etano cuando el etano, C₂H₆ reacciona con un radical libre de cloro, Cl *, como sigue;

C₂H₆ + Cl → C₂H₅ * + HCl

Se forma un producto halogenado cuando un radical libre de etano reacciona con una molécula de cloro como sigue;

C₂H₅ * + Cl₂ → C₂H₅Cl + Cl *

Un producto halogenado puede reaccionar además con un radical libre para producir como sigue;

C₂H₅Cl + Cl * → C₂H₅Cl₂

Explanation:

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