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3 years ago

HELP ASAP

Chemistry

1 answer:

Rzqust [24]3 years ago

6 0

Answer:

The loudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. The unit of intensity is the decibel (dB) Intensity of sound results from two factors: the amplitude of the sound waves and how far they have traveled from the source of the sound.

Explanation:

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Which is a potential benefit of genetic engineering in agriculture? higher levels of toxins disruption of other genes increased

MrMuchimi

Answer:

increase in the size of fruits and vegetables

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3 years ago

Given 6.23 mol Al find the atoms of Al

swat32

Answer:

The answer is

<h3>3.75 × 10²⁴ atoms of Al</h3>

Explanation:

To find the number of atoms of Al given it's number of moles we use the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 6.23 mol

We have

N = 6.23 × 6.02 × 10²³

We have the final answer as

<h3>3.75 × 10²⁴ atoms of Al</h3>

Hope this helps you

3 0

2 years ago

What question could you ask about the components of two atoms to find out if the atoms are of the same elements or of different

Temka [501]

The number of protons and the electron configuration of each

5 0

3 years ago

What can you conclude about the mass of iron (III) sulfide produced when 3.0 g of iron filings react completely with 2.5 g of ye

igor_vitrenko [27]

Answer : The mass of iron(III)sulfide is, 5.4288 g

Solution : Given,

Mass of iron, Fe = 3 g

Mass of sulfur, = 2.5 g

Molar mass of Fe = 56 g/mole

Molar mass of = 256 g/mole

Molar mass of iron(III)sulfide, = 208 g/mole

The balanced chemical reaction is,

First we have to calculate the moles of iron and sulfur.

From the balanced reaction, we conclude that

16 moles of Fe react with 3 moles of

0.054 moles of Fe react with moles of

Therefore, the excess reagent in this reaction is, Fe and limiting reagent is,

Now we have to calculate the moles of FeS.

As, 3 moles of gives 8 moles of

So, 0.0098 moles of gives moles of

The moles of = 0.0261 moles

Now we have to calculate the mass of .

Mass of = Moles of × Molar mass of

Mass of = 0.0261 g × 208 g/mole = 5.4288 g

Therefore, the mass of iron(III)sulfide is, 5.4288 g

Read more on Brainly.com - brainly.com/question/6073920#readmore

5 0

3 years ago

What the requirement for a reversible reaction to be at equilibrium ?

lana66690 [7]

A reversible reaction is a chemical change in which the products can be converted back to the original reactants under suitable conditions. In a reversible reaction, changing the reaction conditions e.g. concentration, pressure or temperature will change the net direction the reaction goes i.e. more to the right (forward) or more to left (backward).It also means a reversible reaction does not go to completion in either direction and all components, original reactants or ensuing products, ALL co-exist in the reaction mixture (see notes on chemical equilibrium).This means the reaction can go in either direction i.e. A + B ==> C + D or C + D ==> A + BA reversible reaction is shown by the sign , a half-arrow to the right (direction of forward reaction), and a half-arrow to the left (direction of backward reaction).It is really important you understand that the terms right & left AND forward & backward are used in the context of how the equation is presented.Most reactions are not reversible (irreversible) and have the usual complete arrow only pointing to the right.

4 0

3 years ago