Chemistry High School

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Answers

Answer 1

Answer:

1) The mole ratio of KClO₃ to 3O₂ is 2:3

The reciprocal of the mole ratio of KClO₃ to 3O₂ is 3:2

2) The mole ratio of K to NaNO₃ is 1:1

The reciprocal of the mole ratio of K to NaNO₃ is 1:1

Explanation:

The mole ratio (also known as mole-mole ratio) of two compounds involved in a chemical reaction, is the ratio of the number of moles of the compounds in the reaction which can be obtained from the coefficients of the compounds in the balanced chemical reaction

The mole ratio of compound A to compound B = A:B = A/B

1)The given chemical reaction can be expressed as follows;

2KClO₃ → 2KCl + 3O₂

Therefore;

[tex]The \ mole \ ratio \ of \ KClO_3 \ to \ O_2 = \dfrac{2 \ moles \ of \ KClO_3}{3 \ moles \ of \ O_2} = \dfrac{2}{3} = 2:3[/tex]

[tex]The \ reciprocal \ of \ the \ mole \ ratio \ of \ KClO_3 \ to \ O_2 = \dfrac{3 \ moles \ of \ O_2}{2 \ moles \ of \ KClO_3} = \dfrac{3}{2} = 3:2[/tex]

2) In the reaction NaNO₃ + K → Na + KNO₃

The mole ratio of K to NaNO₃ = 1:1

Therefore;

The reciprocal of the mole ratio of K to NaNO₃ = 1:1

Related Questions

Based on what you have read about wind turbines and dams, how does a generator work? A loop of Answer spins in a Answer field, producing Answer current. Item

Answers

Based on what you have read about wind turbines and dams, how does a generator work? A loop of ______ spins in a ______ field, producing ______ current.

Answer:

Wire

Magnetic

Electric

Explanation:

The generator works on the principle of converting mechanical energy into electrical energy.

For example in a wind turbine generator, the mechanical energy is the wind that pushes the blades of the turbine directly that leads to conversion of this it's linear motion to the rotary motion required to make rotor of the generator to spin. Finally, the harder the wind pushes, the more the mechanical energy applied and consequently, the more electrical energy can be generated.

Now, all generators work because of the effect of the magnetic field moving past an electrical coil.

Thus, the movement of a magnet across a single loop of wire produces a voltage that is induced within the wire loop as a result of the magnetic field produced by the magnet.

As a voltage is induced across the wire loop, electrons begin to flow around the loop thereby generating electric current.

which of the following statements is true?

A. Displacement and distance traveled are always the same
B. Displacement and distance traveled are never the same.
C. Distance traveled is the direction of the displacement vector.
D. Displacement and distance traveled are the same if the direction does not change.

Answers

Answer:

D. Displacement and distance traveled are the same if the direction does not change.

Answer:

Explanation:

if a person in a single direction, then that person may travel certain distance and if the direction is not changed then its displecemengt remains same sa that person travelled distance.

Ammonia (NH3) is widely used as a fertilizer and in many household cleaners. How much ammonia is produced when 5.81 mol of hydrogen gas react with an excess of nitrogen gas?

Answers

Answer:

65.841 g

Explanation:

The balanced equation for this reaction is;

N2 + 3H2 → 2NH3

From the question, we are interested in ammonia and the hydrogen gas.

From the equation

3 mol of H2 produces 2 mol of NH3

5.81 mol would produce x

Solving of x;

x = 5.81 * 2 / 3

x = 3.873 mol

Converting to mass;

Mass = Number of moles * molar mass

Mass = 3.873 * 17 = 65.841 g

You start with a container that is 8L big and the temperature in the room is 326K.
If the you take the container out in the heat at 352K, how big will it get?

Answers

Answer:

The new volume is 8.64 L.

Explanation:

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure. For a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases.

In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Being an initial state 1 that modifies its conditions until a final state 2, it is fulfilled:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case:

V1= 8 LT1= 326 KV2= ?T2= 352 K

Replacing:

[tex]\frac{8L}{326 K} =\frac{V2}{352 K}[/tex]

Solving:

[tex]V2=352 K*\frac{8L}{326 K}[/tex]

V2= 8.64 L

The new volume is 8.64 L.

Earths seasons in Northern Hemisphere: Choose ALL that apply.

Question 4 options:

More concentrated sunlight makes for cooler temperatures

The summer solstice occurs when the earth is in a position so that the North Pole is tilted most directly toward the sun.

The atmosphere absorbs some of the sun's rays

The tilt and revolution of the earth as it moves around the sun cause the different seasons of the year.

Answers

The summer solstice occurs when the earth is in a position so that the North Pole is tilted most directly toward the sun.

What is the summer solstice?

The summer solstice happens when a pole on either the northern hemisphere or southern hemisphere, is found most inclined toward the sun.

The summer solstice then represents two different moments during the year according to the hemisphere.

The summer solstice happens on June 21, and this period represents the longest day of the year.

In conclusion, the summer solstice occurs when the earth is in a position so that the North Pole is tilted most directly toward the sun.

Learn more in:

https://brainly.com/question/4172420

Answer: B and D also hi

Explanation:

Need help asap
Please help

Answers

Answer:

do u see my pfp its pico from newgrounds.com

Explanation:

If an atom the atomic number 10 and the mass number 12, how many VALENCE electrons does it have?

Answers

The answer for this is 22

The question and options are below {the attachment}
I don't have much time, so please help me!
TIME REMAINING
36:00

Answer:

In ionic bonding, atoms transfer electrons to each other. Ionic bonds require at least one electron donor and one electron acceptor. In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.

Answer:

In ionic bonding,

atoms transfer

electrons to each

other. Ionic bonds

require at least one electron

donor and one electron

acceptor. In contrast, atoms

with the same electronegativity

share electrons in covalent

bonds, because neither atom

preferentially attracts or repels

the shared electrons.

100 cm3 of the copper sulfate solution contains 1.8 g of copper sulfate.
Calculate the mass of copper sulfate in 25 cm of this copper sulfate solution.

Answers

Answer:

The mass of copper sulfate in 25 cm³ of the copper sulfate solution is 0.45 g

Explanation:

The given parameters are;

The volume of the copper sulfate solution = 100 cm³

The mass of the copper sulfate in the solution = 1.8 g

Therefore, the mass of copper sulfate in 25 cm³ of the solution is given as follows;

The mass of copper sulfate in 100 cm³ of the solution = 1.8 g

The mass of copper sulfate in 1 cm³ of the solution = 1.8 g/100 = 0.018 g

Therefore;

The mass of copper sulfate in 25 × 1 = 25 cm³ of the solution, m = 25×0.018 g = 0.45 g

This is ur answer....

P₄O₁₀

Hope it helps!

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Gold can be pounded out to make a foil only a few atoms thick because of
A. Metallic Bonds
B. Ionic Bonds
C. Valence Bonds
D. Covalent Bonds

Answers

Answer:

A. Metallic Bonds

Explanation:

Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.

Gasoline contains chemical potential energy. When you place gasoline in a car, you use up the gasoline and have to refill your gas
tank. How can a teacher state that energy can neither be created nor destroyed in light of this observation?
A)
The teacher is only talking about chemical reactions.
B)
The teacher is stating a theory and not an actual law.
0)
This is an exception to the law of conservation of energy.
D
The energy must be converted into different forms like motion and heat

Answers

i thinks the answer is B

To make 4.25 L of 3.0 M NaOH solution how much of a 9.0 M NaOH solution would be needed?

Answers

Answer:

1.41 L

Explanation:

Initially the concentration of NaOH was 9.0M (say M1) finally the concentration becomes 3.0M (say M2)

intial volume (say V1) is to be calculated when the final volume (say V2) is 4.25L

we have,

M1V1=M2V2

Explanation:

The little number you see to the right of the symbol for an element is called a subscript. That number indicates the number of atoms of that element present in the compound. When balancing an equation, you can change the coefficients but not the subscripts.

hope this helps! if not, it's got to be coefficient or equation

How do neutral metal atoms form ions?

Answers

Answer:

Neutral atoms can be turned into positively charged ions by removing one or more electrons. ... Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons. By adding one more electron we get a negatively charged Cl- ion with a net charge of -1.

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