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3 years ago

¿A que se refiere la amplitud de una onda sinusoidal?

1 answer:

7 0

Amplitude is the distance between the center line of the function and the top or bottom of the function, and the period is the distance between two peaks of the graph, or the distance it takes for the entire graph to repeat. Using this equation: Amplitude =APeriod =2πBHorizontal shift to the left =CVertical shift =D.

The amplitude of the sine and cosine functions is the vertical distance between the sinusoidal axis and the maximum or minimum value of the function. In relation to sound waves, amplitude is a measure of how loud something is.

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You mix 12(g) H2 and 7.0(g) of O2 to form H2O. What is the theoretical yield of the reaction

deff fn [24]

Answer:

15.75g of H2O

Explanation:

Equation for reaction

2H2 + O2 -> 2H2O

From the equation, 2 moles of H2 react with 1 mole of O2 to produce 2 moles of H2O

Mole ratio of reactants is 2:1

1 mole of H2 contains 2g

x moles of H2 contains 12g

x=(12×1)/2 = 6

Therefore, 6 moles of H2 contains 12 g

1 mole of O2 contains 16g

x moles of O2 contains 7g

x=(1×7)/16

x=7/16=0.4375

Therefore, 0.4375 moles of O2 contains 7g

In solving for theoretical yield,

Firstly, determine the limiting reactant between all reactants involved in the reaction.

Considering the reactants in the reaction above, H2 and O2.

Mole ratio is 2:1

2 moles of H2 is needed to react with 1 mole of O2.

Then, 6 moles of H2 will react with x moles of O2

x=(6×1)/2=3

Therefore, 6 moles of H2 will react with 3 moles of O2

1 mole of O2 reacts with 2 moles of H2.

Then, 0.4375 mole of O2 will react with (0.4375×2)=0.875 moles of H2

But we are given 7g~0.4375 moles of O2 and, 12g~6 moles of H2.

From the stoichiometry, 6 moles of H2 needs 3 moles of O2.

But only 0.4375 moles of O2 is made available in the reaction.

Hence, O2 is the limiting reactant

Now, with the limiting reactant being O2, we can find the theoretical yield of the product.

Stoichiometric ratio between the limiting reactant and the product is

1:2

This means, 1 moles of O2 reacts to produce 2 moles of H2O

0.4375 moles of O2 will produce x moles of H2O

x=(2×0.4375)/1=0.875 moles.

Therefore, the theoretical yield of the product is 0.875 moles of H2O

or 15.75g of H2O

8 0

4 years ago

How do humans contribute to flooding?

MaRussiya [10]

Answer:

We cut down the trees we need to soak up the water in the soil for the trees, instead of the water going over the surface of the land

Explanation:

8 0

3 years ago

Read 2 more answers

The solubility of potassium chloride in boiling water is 56.3 g/100 g water. if you add 250.0 g of potassium chloride to 50.0 g

11111nata11111 [884]

The solubility of KCl in boiling water is 56.3 g / 100 g water So each gram of water dissolve 56.3 / 100 = 0.563 g KCl in g water

We have here 50 g water so the total amount of KCl dissolved = 50 * 0.563 = 28.15 g KCl

We have 250 g KCl so it is not dissolved completely (only 28.15 g KCl will be dissolved)

7 0

3 years ago

Read 2 more answers

How do tell isotopes of a certain element apart?

pentagon [3]

You can tell an isotope of a certain element apart by looking at how many neutrons they have. Hope this helps x

6 0

3 years ago

How many atoms of 0.788 moles of sodium hydroxide

katovenus [111]

Hello.

<span>In a molecule, one mole of the molecule contains Avagadro's number of molecules.

So we can safely say that 0.788 moles of NaOH contain 0.788*Av. (Where Av is Avagadro's number)

And in a molecule of NaOH there are 3 atoms, so we multiply the number of molecules by 3 to obtain the number of atoms

3x0.788xAv

=3x0.788x6.02x10^23

=1.42x10^24 Atoms.

Have a nice day

</span>

6 0

4 years ago