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3 years ago

Las formulas de quimica

Chemistry

1 answer:

Veseljchak [2.6K]3 years ago

3 0

Answer:

The chemistry formulas are formed by the chemical reactions of chemical substances.

Explanation:

The chemical substances are introduced together to find the chemical reactions and then equations are formed. The equations them used to form the formulas for the chemical reactions that are performed. The quantity of the acid and base need to be carefully introduced when performing a titration process.

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Compare and contrast exothermic and endothermic

Vadim26 [7]

Exothermic is the release of heat. Exo as in exit to leave and thermos, the Greek word for heat. Endothermic is the absorption of heat. So if a chemical reaction is exothermic the reaction loses heat and it feels warm to you. If it is endothermic, it absorbs heat. If you are holding a beaker with an endothermic reaction, it will absorb the heat from you and therefore these re actions feel cool to touch!

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4 years ago

Once the following equation is balanced with the smallest set of whole number coefficients, what is the sum of the coefficients?

katrin [286]

Answer:

Explanation:

To balance the equation, we need to supply the number of missing coefficients.

There are 2 moles of aluminium on the right hand side, so automatically we need to multiply the number of moles of aluminium by 2 on the left hand side.

There are 3 sulphate ions on the right hand side so we need to multiply the number on the left by 3.

And lastly since we have 6 hydrogen molecules on the left hand side now, we need to multiply the hydrogen on the right hand side by 3 to give 6

The set of coefficients = 2 3 1 3

Adding all thus yields 9

7 0

3 years ago

Explain the reason according to bohr atomic model why atomic emission spectra

damaskus [11]

<span> contain only certain frequencies of light. Each s sublevel is related to a spherical s orbital. ... </span>Bohr model<span>: the electron is a particle; they hydrogen </span>atom<span>has only certain allowable energy states. hope this helps

</span>

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3 years ago

How many moles are in 3.45g of KCI ?

artcher [175]

<h3>Answer:</h3>

0.0463 mol KCl

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.45 g KCl

<u>Step 2: Identify Conversions</u>

Molar Mass of K - 39.10 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.45 \ g \ KCl(\frac{1 \ mol \ KCl}{74.55 \ g \ KCl})$
Multiply/Divide: $\displaystyle 0.046278 \ mol \ KCl$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.046278 mol KCl ≈ 0.0463 mol KCl

8 0

3 years ago

What is the product when 3,3-dimethyl-1-butanol undergoes oxidation

Step2247 [10]

The compound given (i.e. 3,3-dimethyl-1-butanol) is primary alcohol (1°) because the functional group (-OH) shows that it is alcohol is attached to a primary carbon (i.e terminal carbon).

The oxidation of all primary alcohols results in the formation of aliphatic aldehyde(also known as alkanal).

Suppose, it is secondary alcohol;

The oxidation of secondary alcohol results in the formation of ketone(also known as alkanone).

When 3,3-dimethyl-1-butanol undergoes oxidation, the suffix "ol" in the alcohol changes to "al"

Therefore, 3,3-dimethyl-1-butanol changes to 3,3-dimethyl-1-butanal after undergoing oxidation.

In conclusion, the product when 3,3-dimethyl-1-butanol undergoes oxidation is: 3,3-dimethylbutanal.

As such, option 2 is correct.

Learn more about oxidation reaction here:

brainly.com/question/14863344?referrer=searchResults

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3 years ago