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Nadya [2.5K]
2 years ago
8

Science: Number 3 plsss

Chemistry
2 answers:
Fynjy0 [20]2 years ago
7 0

Answer:

d

Explanation:

Tema [17]2 years ago
3 0

Answer:

the plants it will be bigger if you take care it so much the plant it will help in our world

Explanation:

I HOPE ITS HELP<em>.</em><em>.</em><em>.</em><em>P</em><em>L</em><em>E</em><em>A</em><em>S</em><em>E</em><em> </em><em>C</em><em>O</em><em>R</em><em>R</em><em>E</em><em>C</em><em>T</em><em> </em><em>M</em><em>E</em><em> </em><em>I</em><em>F</em><em> </em><em>I</em><em>M</em><em> </em><em>W</em><em>R</em><em>O</em><em>N</em><em>G</em>

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If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, what does that indicate
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3 years ago
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Is each of the following statements true or false? Correct any that are false.
adell [148]

<u>True,</u> A mole of one substance has the same number of atoms as a mole of any other substance.

<h3>What is a mole?</h3>

Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.

The mole designates an extremely large number of units, 6.02214076 × 10^{23}. The General Conference on Weights and Measures defined the mole as this number for the International System of Units (SI) effective from May 20, 2019. The mole was previously defined as the number of atoms determined experimentally to be found in 12 grams of carbon-12.

The number of units in a mole also bears the name Avogadro’s number, or Avogadro’s constant, in honour of the Italian physicist Amedeo Avogadro (1776–1856). Avogadro proposed that equal volumes of gases under the same conditions contain the same number of molecules, a hypothesis that proved useful in determining atomic and molecular weights and which led to the concept of the mole.

Learn more about mole

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5 0
1 year ago
What volume of water is required to prepare 0.1 M H3PO4 from 100 ml of 0.5 M solution?
ExtremeBDS [4]

Answer: A volume of 500 mL water is required to prepare 0.1 M H_{3}PO_{4} from 100 ml of 0.5 M solution.

Explanation:

Given: M_{1} = 0.1 M,    V_{1} = ?

M_{2} = 0.5 M,       V_{2} = 100 mL

Formula used to calculate the volume of water is as follows.

M_{1}V_{1} = M_{2}V_{2}

Substitute the values into above formula as follows.

M_{1}V_{1} = M_{2}V_{2}\\0.1 M \times V_{1} = 0.5 M \times 100 mL\\V_{1} = 500 mL

Thus, we can conclude that a volume of 500 mL water is required to prepare 0.1 M H_{3}PO_{4} from 100 ml of 0.5 M solution.

7 0
3 years ago
A mixture of gaseous sulfur dioxide and oxygen are added to a reaction vessel and heated to 1000 K where they react to form SO3
nasty-shy [4]

Answer:

Kp = 0.0410

Explanation:

The reaction of gaseous sulfur dioxide and oxygen to form SO3 (g) is:

2SO₂(g) + O₂(g) ⇄ 2SO₃(g)

Kp is defined as the ratio of pressure of products and pressure of reactants:

Kp = \frac{P_{SO_3}^2}{P_{SO_2}^2P_{O_2}}

Kp = \frac{0.0851atm^2}{0.669atm^2*0.395atm}

Kp = 0.0410

I hope it helps!

5 0
3 years ago
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