CHEMISTRY HIGH SCHOOL

Pierce conducts an experiment in which waves collide in a way that the energy increases, which means that has occurred

Answers

Answer 1

Answer:

It means the waves collides and constructive interference occurred.

Explanation:

If the two waves coming from the opposite direction collide with each other, there are two way of their interference.

Constructive interference: An interference which results in the increase in energy. And it is when crust of a wave comes on the crust of second wave.
Destructive interference: An interference which results in decrease in energy of the resulting wave and colliding waves cancel the result of each other.

Hence in experiment there will be constructive interference.

Answer 2

Answer:

Answer:

Explanation:

I took the test!

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How many hybrid orbitals are found in CCl4?

Answers

CCl4

For central atom C

The formula to calculate hybridization is:

n= 1/2 [group no. central atom +no. of monovalent atoms attached to central metal atom (except oxygen) + magnitude of negative charge - magnitude of positive charge]

n= 1/2 [4 +4 + 0-0]

n= 1/2 [8)

The hybridization is sp3 and the electron geometry is tetrahedral

the answer is FOUR 4
hope this helps ;)

What is free-fall acceleration near earth's surface

Answers

free fall is when the only force acting on an object is gravity

Near Earth's surface, the distance between the object that is falling and the center of Earth does not change very much. Thus, the force given by the law of universal gravitation depends only on the mass of the object that is falling.

How many moles of sulfate ions (SO42−) are present in 1.5 mol of Al2(SO4)3?

Answers

Answer:4.5 moles of sulfate ions are present in 1.5 moles of $Al_2(SO_4)_3$ .

Explanation:

$Al_2(SO_4)_3\rightarrow 2Al^(3+)+3SO_(4)^(2-)$

1 mol of $Al_2(SO_4)_3$ gives 3 moles of sulfate ions.

Moles of sulfate ion in 1.5 moles : $1.5* 3=4.5 moles$

4.5 moles of sulfate ions are present in 1.5 moles of $Al_2(SO_4)_3$ .

Moles are the fraction of the chemical unit of the atoms, molecules, etc. The moles of sulfate ion present in 1.5 moles of aluminum sulfate is 4.5 moles.

What are moles?

Moles are the ratio of the mass of the substance to that of the molar mass of the substance. Moles are given in mol.

The reaction can be shown as:

$\rm Al_(2)(SO_(4))_(3) \rightarrow 2Al^(3+) + 3SO_(4)^(2-)$

From the reaction, it can be concluded that 1 mole of aluminum sulfate will give 3 moles of sulfate ions.

The moles of sulfate ions in 1.5 moles of aluminum sulfate will be, $1.5 * 3 = 4.5 \;\rm moles.$

Therefore, 4.5 moles of sulfate ions are present in aluminum sulfate.

Learn more about moles here:

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Place the terms compounds; mixtures, and elements in the proper sequence according to increasing complexity

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The basic form of matter is the atom. Atoms can be distinguished from each other and they are known as elements. When elements combined, they form compounds. The can either contain two or more elements. When you combined compounds of different types or classes, they form mixtures.

Write a chemical equation for the following decomposition reaction.Nickel(II) hydroxide(s) decomposes to produce nickel(II) oxide(s) and water.

Answers

the chemical equation will be Ni(OH)2(s)------>heat---> NiO(s) + H2O(g)
we know that the heat supplied to decompose the compound.In the result the product H2O is assumed to be in the vapor state so that is gas.

hope it helps

Final answer:

The decomposition of Nickel(II) hydroxide produces Nickel(II) oxide and water. The chemical equation is: Ni(OH)2 (s) → NiO (s) + H2O (l).

Explanation:

The decomposition reaction of Nickel(II) hydroxide into Nickel(II) oxide and water can be written as follows: Ni(OH)2 (s) → NiO (s) + H2O (l) . In this reaction, solid Nickel(II) hydroxide decomposes into solid Nickel(II) oxide and liquid water. It’s important to remember that in these reactions, a single, complex reactant breaks down into multiple, simpler products.

Learn more about Decomposition Reaction here:

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Plz help me i need to know how to do this!!!

Answers

Equivalent conversions:

1 atm = 760 mm Hg = 101.325 kPa

Dalton’s law is presented inthis formula, P = p1 + p2 + … +pn where p1, p2 to pn are the pressures of theindividual gases and the P is the total pressure.

Let p1 = CO2, p2 = O2 and p3 =N2

p1 = 125mmHg (1 atm/760 mmHg) =0.1645 atm

p2 = 22 kPa (1 atm/101.325 mmHg)= 0.2171 atm

P = p1 + p2 + p3

1.5atm = 0.1645 atm + 0.2171 atm+ p3

p3 = N2 = 1.1184 atm

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