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In-s [12.5K]
4 years ago
8

Which of the following represents a synthesis reaction?

Chemistry
1 answer:
gayaneshka [121]4 years ago
6 0

Answer:

The answer to your question is the second one

Explanation:

                                         AC + B → AB + C

This is not the right answer, the reaction shown here is a single replacement reaction in which one element replaces another element that is part of a compound.

                                         A + B + C → ABC

This is the right answer because in synthesis reactions two or more reactants bound to form only one product.

                                          ABC → A + B + C

This answer is incorrect because this is an example of a decomposition reaction in which one reactant forms two or more products.

                                       AB + CD → AC + BD

This is an example of double replacement reaction in which the cations and anions of the reactants are interchanged.

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What is the empirical formula for a compound that is 94.1% oxygen and 5.90 % hydrogen?
RSB [31]

Answer:

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3 years ago
Mendeleev's periodic table of elements was created in 1901.<br> O A. True<br> O B. False
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B. False
It was created in 1869
3 0
4 years ago
PLEASE HELP I HAVE LIMITED TIME!!
n200080 [17]

Answer:

Explanation:

Si tomamos en cuenta el peso molecular del agua, que es equivalente a:

1 Átomo de H₂O

O = 16 gr/mol

H = 1 gr/mol

H₂O = 18 gr/mol

Teóricamente sabemos que en 1 mol de H2O habrá 18 gr.

 

Para obtener los moles presentes en 1 mg de H₂O, (como 1 gr = 1000 mg), decimos:

1 mol H2O …………………………..  18000 mg

       X          ……………………………   1 mg

X = 1 / 18000 = 5,56 X 10⁻⁵ moles de H20

 

Y para obtener la cantidad de moléculas presentes, de acuerdo a los moles, multiplicamos por el número de Avogadro (6,023 X 10²³ moléculas /mol)

Moléculas de H₂O = 5,56x 10⁻⁵ mol x 6,023 x 10²³

Moléculas de H₂O = 3,34488 x10¹⁹ moléculas de H₂O

En el copo de nieve habrá 3,34488 x 10¹⁹ moléculas de H₂O.

Espero que te sirva =)

3 0
3 years ago
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