how many moles of of Al are needes to form 2.43 mol of Al2Br6?
A. 7.29 mol
B. 1.22 mol
C. 2.43 mol
D. 1.62 mol
E. 4.86 mol​

Answers

Answer 1

Answer:

c

Explanation:

c .

answer

your

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Related Questions

Synthetic reactions in Citric Acid Cycle

Answers

« Synthetic reactions in Citric Acid Cycle »

The overall reaction for the citric acid cycle is as follows: acetyl-CoA + 3 NAD+ + FAD + GDP + P + 2H2O = CoA-SH + 3NADH + FADH2 + 3H+ + GTP + 2CO2.

Many molecules in the citric acid cycle serve as key precursors for other molecules needed by cells.

hope it is

lights of different frequencies make up

Answers

Answer:

Light waves come in a continuous variety of sizes, frequencies and energies, a continuum known as the electromagnetic spectrum. Once Maxwell introduced the concept of electromagnetic waves, everything clicked into place.

Explanation:

Hope this helps:)

~Kisame'sAbs


Which temperatures originally represented the fixed points
Celsius temperature scale?

Answers

Answer:Since 1743 the Celsius scale has been based on 0 °C for the freezing point of water and 100 °C for the boiling point of water at 1 atm pressure. Prior to 1743 the values were reversed (i.e. the boiling point was 0 degrees and the freezing point was 100 degrees).

Explanation: i no it

Look at the numbered locations. Our solar system can be found at_____

Location 1

Location 2

Location 3

Location 4

Answers

Answer:

location 3...........

How do you prepare a demi-glace?

Answers

Answer:

Explanation:

sory i dont know

Demi-glace is a classic element of French cuisine. This dark brown sauce is made by reducing broth until it's thick and packed with flavor. It can be made from beef stock, chicken stock, or even vegetable stock. The traditional French version is made with veal.

What is the molarity of 98.0 g of phosphoric acid, H3PO4 in 1.00 L of solution. Please show your work.

Answers

Answer:

1.0001 M

Explanation:

Molarity = Mass/(Volume x molar mass)

Molarity = 98.0 g/(1.00 L x 97.994 g/mol)

Molarity = 1.0001 M

the molarity of 98.0 g of phosphoric acid, H3PO4 in 1.00 L of solution is 1.0001 M

what is the difference between molarity and molality ?

Molarity can be defined as the number of moles of solute available in a definite concentration and amount of the solution, other wise called as moles per liters of a solution.

Molality of a solution can be defined as the number of moles per solute can be present in a kilogram of the solvent,  which is moles per kilogram of a solvent.

Though the terms Molarity and Molality are quite similar but the sharp difference between them as it creates a huge difference while using this two form of calculation  for various calculations.

Molarity = Mass/(Volume x molar mass)

Here, Molarity = 98.0 g/(1.00 L x 97.994 g/mol)

Molarity = 1.0001 M

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how many number of atoms are present in 0.55moles of calcium​

Answers

Explanation:

The warmer and less dense air near the ground rises during the day pulling more air through the valley floor. This gentle upslope wind known as a valley breeze. ... The cooler and denser air at higher elevations flows back down the slopes of the mountain and into the valley. This is called a mountain breeze.29-May-2017

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A mountain breeze and a valley breeze are two related, localized winds that occur one after the other on a daily cycle. They are not the same as anabatic and katabatic winds, which are larger and stronger. These winds are opposite from each other. Wikipedia

How many molecules of NaCl are there per mL of the solution?

Answers

Explanation:

Nacl is an ionic compound, so there are no molecules only formula units please mark me brainlist

Looking at the above diagram, which side would be considered an acid AND explain how do you know this?

Answers

Answer:

The side with lots of H+ and low pH

Explanation:

Because one of the feature of an acid is the ability to dissociate to H+.

And it has lower pH because the concentration of H+ is more than OH-

What are the substances you start with in a chemical reaction called?
A. The intermediates

B. The products

C. The mixture

D. The reactants

Answers

The answer is B the products those are the products your starting off with
I think it’s answer D. The reactants

Tin has the atomic number Sn (Z = 50).
(a). Give its electronic structure
(b). Is it one of the transition metals?
(c). Knowing that it loses its electrons in pairs and that the 4d subshell is not affected. What are the possible degrees of oxidation for this element?

Answers

Tin has electron configuration [Kr] 5s²4d¹⁰5p² and it is not a transition element because its outermost orbitals are 5s² 5p². It has oxidation states of +2 and +4.

The electron configuration of tin is [Kr] 5s²4d¹⁰5p². The electronic structure of an atom shows the arrangement of electrons in the atom of an element. The electrons are arranged in sub-shells.

Tin is not a transition metal because it has a completely filled d sub-shell and  its outermost shell consists of ns, np orbitals.

Tin looses its electrons in pairs. Remember that the outermost orbitals are  5s² 5p². This means that tin can have two stable oxidation states, +2 and +4.

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A volume of 10.0 mL of 25 mg/L Mn2+ solution was diluted to make a solution with the final volume of 50.0 mL. Calculate the concentration (in mg/L) of the final solution

Answers

Taking into account the definition of dilution, the concentration of the final solution is 5 mg/L.

First of all, you have to know that dilution is the reduction in concentration of a chemical in a solution.  The process consists of adding more solvent to the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volume

In this case, you know:

Ci= 25 mg/L  Vi= 10 mL Cf= ? Vf= 50 mL  

Replacing in the definition of dilution:

25 mg/L × 10 mL= Cf × 50 mL

Solving:

Cf= (25 mg/L × 10 mL)÷ 50 mL

Cf=  5 mg/L

In summary, the concentration of the final solution is 5 mg/L.

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Rank the given objects from having the biggest size to the smallest size Blood cells , virus, atom, electrons , paper

Answers

Answer:

paper, blood cell, virus, electron, atom

Explanation:

Paper, blood cells, virus, electrons, atom

helpppppppppppppppppppppp

Answers

Answer:

The process in which plants release water through their leaves back into the air

Explanation

Answer:

The process in which plants release water through their leaves back into the air.

Hope this helps!

List the steps in naming covalent compounds.

Answers

1.       Name the non-metal furthest to the left on the periodic table by its elemental name.

2.       Name the other non-metal by its elemental name and an -ide ending.

3.       Use the prefixes mono-, di-, tri-.... to indicate the number of that element in the molecule.

4.       If mono is the first prefix, it is understood and not written

Answer:

Rules for naming simple covalent compounds:

1.    Name the non-metal furthest to the left on the periodic table by its elemental name.

2.   Name the other non-metal by its elemental name and an -ide ending.

3.    Use the prefixes mono-, di-, tri-.... to indicate the number of that element in the molecule.

4.  If mono is the first prefix, it is understood and not written

Examples:

N2O4 is called dinitrogen monoxideCO2 is called carbon dioxideCO is called carbon monoxideN2O is called dinitrogen monoxide.  (It is also called nitrous oxide but that is another naming scheme.)CCl4 is called carbon tetrachloride

Here is a chart of those prefixes:

1 - mono

2 - di

3 - tri

4 - tetra

5 - penta

6 - hexa

7 - hepta

8 - octa

9 - nona

10 - deca

Alex mixed soy sauce and vinegar and created mixture that has a uniform appearance all throughout. he also noticed that the components are not recognizable and are evenly mixed.Which type of mixture was he able to create

a.heterogeneous
b.homogeneous
c.solid in liquid
d.solid in liquid​

Answers

Answer:

b.homogeneous

Can I have a Brainliest please?

Explanation:

Question 5 of 5
The rows in the periodic table are called periods. What is true about elements
in the same period?
O A. They have the same atomic mass.
B. Their atomic numbers increase by 1 from left to right.
C. Their magnetism increases in strength from left to right.
D. They have similar chemical properties.
SUBMIT

Answers

Answer:

B. Their atomic numbers increase by 1 from left to right

HELPPPPPP
Calculate the frequency of light with a wavelength 559nm​

Answers

Answer:

Refer to the attachment

What happens when the compound CaCl2 forms?

Answers

Explanation:

Calcium gives valence electrons to both chlorine atoms so that they have a full outer shell.

how many grams of hydrogen in 1.85moles

Answers

2H2(g) + O2(g) → 2H2O(1) 0 260 g 0.2068 0.180 g 2008 When 45.0 g of CH4 reacts with excess O2, the actual yield of CO2 is 118 g. What is the percent yield? CHA(g) + 2O2(g) - CO2(g) + 2H2O(g) 73.6% 67.9% 95.2% 86.4% For the reaction: 2503(g) + 790 kcal - 25(s) + 3O2(g), how many kcal are needed to form 1.5 moles O2(g)? 790 kcal 395 kcal 2370 kcal 411 kcal When 3 moles of Ny are mixed with 5 moles of H2 the limiting reactant is N2(g) + 3H2(g) - 2NH3(g) H2 NH3 ОООО H20 O N₂

Na is best known as a(n):

Answers

Answer:

sodium

Explanation:

sodium is an element with the atomic no. of 11 and atomic mass of approximately 23

What is the mass of a baseball that has kinetic energy of 105 and is traveling at 10 m/s

Answers

Answer:

K.E =1/2 Mass×(velocity)2

Explanation:

1/2mass=K.E/Velocity 2

1/2mass=105/(10m/s)2

1/2mass=105/100m/s

1/2mass=21/20m/s

mass=21/20m/s ×2

mass=21/10

mass=2.1 Kilogram (put the value)

In the following reaction, how many liters of oxygen will react with 270 liters of ethene (C2H4) at STP?
C2H4(g) + 3O2(g) 2CO2(g) + 2H2O(g)
The volume of one mole of gas at STP is 22.4 liters.

Answers

According to the equation you have 1 mole of C2H4 and 3 moles of O2.

1 • (22.4L / 270L) = 3 • (22.4L / x)

1/270L = 3/x

x = 3(270) / 1

x = 810 L

810 Liters of oxygen will react with 270 liters of ethene (C2H4) at STP

Select the statements that correctly describe an asteroid. Check all that apply

Largest of the space rocks found orbiting the Sun.

Smallest of the space rocks found orbiting the Sun.

most are found between Mars and Jupiter

most are found between Jupiter and Saturn

Answers

Answer:

Explanation:

Most of this ancient space rubble can be found orbiting the Sun between Mars and Jupiter within the main asteroid belt. Asteroids range in size from Vesta – the largest at about 329 miles (530 kilometers) in diameter – to bodies that are less than 33 feet (10 meters) across.

Rock salt is a mixture of salt (sodium chloride) and sand. Describe how you would separate rock salt to obtain salt crystals and pure dry sand. In this question you get marks for how well your answer is written. You will get marks for: spelling, grammar, organising your ideas and information clearly and using key scientific words.

Answers

Answer:

pour the rock salt mixture throught a filter made from paper and allow the liquid to filtrate .

Explanation:

Separating Sand and Salt

Probably the easiest method to separate the two substances is to dissolve salt in water, pour the liquid away from the sand, and then evaporate the water to recover the salt.

Pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.

What is filtration?

Filtration is defined as the technique of removing solid particles from a liquid or gaseous fluid by passing the fluid through a filter media while keeping the solid particles behind.

It can also be defined as a physical method that uses a filter media with a complicated structure that only allows fluid to pass through to separate solid matter and liquid from a combination.

There are six types of filtration.

Vacuum filtrationCentrifugal filtrationGravity filtrationCold filtrationHot filtrationMultilayer filtration

Mixture is defined as a substance that is composed of two more chemical compounds or substances that do not chemically mix.

There are two types of mixture.

Homogenous mixtureHeterogenous mixture

Thus, pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.

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classify each of these reactions pb(no3)2+nicl2=pbcl2+ni(no3)2

Answers

The reaction Pb(NO3)2(aq) + NiCl2(aq)---------> PbCl2(s) + Ni(NO3)2(aq) is a precipitation reaction.

A chemical reaction is said to occur when two or more substances are combined to produce new substances. Chemical reactions are classified based on the kind of change taking place in the reaction.

In the reaction;

Pb(NO3)2(aq) + NiCl2(aq)---------> PbCl2(s) + Ni(NO3)2(aq)

We can see that a solid is formed when lead II nitrate reacts with nickel II chloride. This is a precipitation reaction.

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50 Points (Brainliest too)! Please help!
1. In detail, explain what transmutation is.
2. In one to two sentences, explain what an alpha particle is.
3. Explain the difference between a chemical equation and a nuclear equation.
4. What is the relationship between the atomic number and the mass number of a 5. nucleus?
Please help me understand these!! I'm really confused!

Answers

Answer:

Transmutation is the conversion of an atom of one element into an atom of a different element through nuclear changes.

An alpha particle is a particle composed of 2 protons and 3 neutrons. It results from transmutation because of the change in protons in a large nucleus.

A chemical equation is balanced accord to the number of atoms of each element before and after the change. This is also shows the Law of Conservation of Matter.

A nuclear equation is balanced according to mass number and charge (atomic number). These equations can’t be balanced like chemical equations because the identities of the atoms can change.  On the left of equation, the top number is the atomic mass and the bottom number is the atomic number. Take note that if you add the atomic mass (top number), you’ll get the the atomic mass of of the atom pre-transmutation. Same applies with atomic number. This shows a balanced nuclear equation.

The atomic number is the number of protons in a nucleus. The mass number is the sum of the protons and neutrons in a nucleus. Electrons have very small masses, so they are not accounted in atomic mass.

does xef4 have resonance structure?​

Answers

Answer:

Yes

Explanation:The structure of XeF4 is square planar.

Which location in the diagram above is the Northern Hemisphere experiencing summer?

Location A

Location B

Location C

Location D

Answers

Answer:

c

Explanation:

Answer:

Location b is experiencing summer

In the Northern Hemisphere, Summer season is represented here location B.

What is the density of a gas with a volume of 5.6 FL oz. and a mass of 37 grams?

Answers

Answer:

6.60

Explanation:

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