What ions are formed when naoh is dissolved in water?.

Answer:

this is the result

Explanation:

36.0

BE=4

36.0÷4

= 9

Answer:

5.075moles

Explanation:

First get the molecular mass of beryllium which is 4g/mol.

Then input your given mass...

Formular for mole =mass/molecular mass

Mole=20.3g/4g/mol

=5.075moles

The theoretical yield of iron metal is 42.3 g

The equation for the reaction is:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Since, all of the carbon monoxide was consumed during the reaction, then carbon monoxide is the limiting reactant

Thus, iron (III) oxide is the excess reactant

From the question, we are to determine the theoretical yield of iron metal

First, we will write the balanced chemical equation for the reaction

The balanced chemical equation for the reaction is

Fe₂O₃ + 3CO → 2Fe + 3CO₂

This means

1 mole of iron(III) oxide reacts with 3 moles of carbon monoxide to produce 2 moles of iron metal and 3 moles of carbon dioxide gas.

Now, to determine the theoretical yield of iron metal

First, we will determine the number of moles of each reactant present

Mass = 75.0 grams

Molar mass = 159.69 g/mol

Using the formula,

[tex]Number \ of \ moles = \frac{Mass}{Molar\ mass}[/tex]

Then,

Number of mole of Fe₂O₃ present = [tex]\frac{75.0}{159.69}[/tex]

Number of mole of Fe₂O₃ present = 0.46966 mole

Mass = 50.0 g

Molar mass = 44.01 g

Then,

Number of moles of CO₂ present = [tex]\frac{50.0}{44.01}[/tex]

Number of moles of CO₂ present = 1.136105 moles

Now,

If 1 mole of iron(III) oxide reacts with 3 moles of carbon monoxide to produce 2 moles of iron metal

Then,

0.378702 mole of iron(III) oxide will react with 1.136105 moles of carbon monoxide to produce 0.757403 moles of iron metal

Therefore, the number of moles of iron metal that would be produced is 0.757403 moles

Now, for the mass of the iron metal

Using the formula

Mass = Number of moles × Molar mass

Atomic mass of iron metal = 55.845 g/mol

Then,

Mass of iron metal that would be produced = 0.757403 × 55.845

Mass of iron metal that would be produced = 42.29717 g

Mass of iron metal that would be produced ≅ 42.3 g

Hence, the theoretical yield of iron metal is 42.3 g

The equation for the reaction is:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Since, all of the carbon monoxide was consumed during the reaction, then carbon monoxide is the limiting reactant

Thus, iron (III) oxide is the excess reactant

Learn more on Stoichiometry here: https://brainly.com/question/6061451

Answer:

239

Explanation:

i think this is the answer

Answer:

56

Explanation:

[tex]\\ \rm\Rrightarrow K_c=\dfrac{[Products]}{[Reactants]}[/tex]

Now

[tex]\\ \rm\Rrightarrow k_c=\dfrac{[C]^2}{[A]^1[B]^1}[/tex]

Put values

[tex]\\ \rm\Rrightarrow 4=\dfrac{x^2}{2^2}[/tex]

[tex]\\ \rm\Rrightarrow x^2=4(4)[/tex]

[tex]\\ \rm\Rrightarrow x^2=4^2[/tex]

[tex]\\ \rm\Rrightarrow x=4.0M[/tex]

Answer:

B- to study the surface of the moon

#1

#2

Yes here we can see the dots and crosses clearly.

#3

It's Methane or CH_4

#4

There is no double bond

Answer:

#1

See H and C have shared their electrons so its Covalent bonding

#2

Yes, here we can see the dots and crosses clearly.

Dot and crosses diagram

#3

It's Methane or CH_4

4 single bonds

#4

There is no double bond

Explanation:

mark the person that did it before me brainliest

Answer: the answer is  D

Explanation: u have to divide

Answer:

A. It is used for the phase change.

Answer:

My Answer:

Explanation:

Exothermic because heat energy exits as the lava cools then forms a solid.

Answer:

So, the right answer is. No. of moles of FeS₂ = 0.25 mole. Explanation: From the balanced. 4 FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2.

Explanation:

Answer:

How did John D Rockefeller make his fortune? Rockefeller founded the Standard Oil Company in 1870. He ran it until 1897, and remained its largest shareholder.

Answer:

oil

Explanation:

Age GroupKI DosageNumber of 65-mg tabletsAdults over 18 years130 mg2Over 12 - 18 years and over 150 pounds130 mg2Over 12 - 18 years and less than 150 pounds65 mg1Over 3 -12 years65 mg1

Explanation:

Answer:

2.00 mol/L   or   2.00 M

Explanation:

500 mL ( 1 L / 1,000 mL) = 0.500 L

M =  1 mole NaNO3 /  0.500 L =   2.00 mol/L   or   2.00 M

Hope this Helps!!!!

Answer:

The Celsius scale sets the freezing point and boiling point of water at 0°C and 100°C respectively. The Kelvin scale is based on molecular motion, with the temperature of 0 K, also known as absolute zero, being the point where all molecular motion ceases.

Explanation:

Answer:

The protons and electrons of an atom are attracted to each other. They both carry an electrical charge. Protons have a positive charge (+) and electrons have a negative charge (-). The positive charge of the protons is equal to the negative charge of the electrons.

Explanation:

Answer:

b : they move to the positive electrode

Explanation:

they lose electrons to form chlorine atoms. The atoms join up in pairs to form Cl² molecules , so chlorine gas is formed at the positive electrode

Answer:

have just recently learnt the theory of fractional and normal distillations and the basics of maximum and minimum boiling azeotropes.

The chemical formula of a compound with a formula mass of 17 will be NH3

The formula mass of a compound or molecule is derived by summing the average molar weight of the individual atoms that make up the compound or molecule.

In this case, the formula mass is 17.

For ammonia with chemical formula NH3;

Molar weight of H = 1

Molar weight of N = 14

Formula mass = (14) + (1 x 3)

                          = 17 AMU

More on formula mass can be found here: https://brainly.com/question/867780

Answer: NH3

Explanation:

It forms magnesium oxide by reacting with oxygen

The balanced equation is provided by

[tex]\\ \rm\hookrightarrow 2Mg+O_2=2MgO[/tex]

On both sides

Hence balanced

Answer:

Food, safe water, housing, education, and health care are examples of basic needs. Wants are desires that can be satisfied by goods and services.Secondary needs are the desires and wants that become important when primary needs are satisfied. Definition (2): Secondary needs are connected with the desire for satisfaction and pleasure of the human being: designer articles or furniture, the high-tech and the newest cell phone, jewelry, a luxury car, etc.

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Answer:

2.835 moles of carbon

Explanation:

By definition, there are 6.022x10^23 atoms (or compounds) in one mole.

Write and use this as a conversion factor:

(6.022x10^23 atoms)/mole

(1.707 x 10^24 atoms of carbon)/((6.022x10^23 atoms)/mole) = 2.835 moles carbon

Answer:

As the egg ages, air enters the egg and the air cell becomes larger and this acts as a buoyancy aid. Generally, fresh eggs will lie on the bottom of the bowl of water.

Eggs that tilt so that the large end is up are older, and eggs that float are rotten.

Explanation:

hope it helps

pH = - log [H⁺]

pH = 7.5

[tex]\tt [H^+]=10^{-7.5}=3.16\times 10^{-8}[/tex]

pH + pOH = 14

7.5 + pOH = 14

pOH = 6.5

[tex]\tt [OH^-]=10^{-6.5}=3.16\times 10^{-7}[/tex]

Answer:

hydrogen

Explanation:

hydrogen has 1 proton, 0 neutrons and one electron

Answer:

There is only one stable atom that does not have neutrons.

Explanation:

Answer:

B)The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.

Explanation:

Electrolytes dissociate ions. They are also conductors. Since the first 2 bulbs light up strongly, we can assume that the ions completely dissociated. Since the 3rd did not light up, it is a nonelectrolyte.

Answer:

The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.

Explanation:

Answer:

Fe2O3 + 3CO → 2Fe + 3CO2

Explanation:

the numbers in front are the numbers you need

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

Here's the balanced chemical equation for given reaction ~

[tex] \sf Fe_2O_3 (s) +3 \: CO (g) =2 \: Fe(l) + 3\: CO_2 (g)[/tex]

As we can see, the Coefficient of Fe (l) is 2