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lubasha [3.4K]
3 years ago
9

How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0

Chemistry
2 answers:
Gnesinka [82]3 years ago
5 0
K is Potassium
Cl is Chlorine 
There are 2 elements.
Margaret [11]3 years ago
3 0

Answer: Option (B) is the correct answer.

Explanation:

An element is defined as a substance that contains same type of atoms.

For example, element K contains only atoms of potassium.

Whereas a substance in which two or more different elements chemically combine together in a fixed ratio by mass is known as a compound.

For example, KCl contains atoms of K and Cl in 1 : 1 ratio. Hence, it is a compound.

Therefore, in the chemical reaction, K + Cl \rightarrow KCl there are only two elements which are K and Cl.

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In each pair, choose the larger of the indicated quantities or state that the samples are equal:
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3.3 g of SO₂  is a larger quantity in moles.

<h3>What is moles?</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.

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7 0
2 years ago
What is the wavelength of radiation with a frequency of 3.68 X 10^12 /s?
konstantin123 [22]

Answer:

The wavelength of radiation = 8.2 x 10⁻⁵

Explanation:

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6 0
3 years ago
If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g・°C) that can be heated from 22.5°C to
inysia [295]

Answer:

The correct answer will be "18.25 g".

Explanation:

The given values are:

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