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rusak2 [61]
4 years ago
12

1)

Chemistry
1 answer:
Arte-miy333 [17]4 years ago
3 0

Answer: D

Explanation:

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2. Find the empirical formula for a compound which contains 32.8% chromium and 67.2%<br> chlorine.
Blababa [14]

The empirical formula is CrCl₃.

Explanation:

To find the empirical formula we use the following algorithm.

We divide each percentage by the atomic weight of each element:

for Cr   32.8 / 52 = 0.63

for Cl   67.2 / 35.5 = 1.89

The result will be divined by the smallest number:

for Cr    0.63 / 0.63 = 1

for Cl     1.89 / 0.63 = 3

The empirical formula is CrCl₃.

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empirical formula

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6 0
4 years ago
¿Qué establece la ley de la conservación de la materia? Explicar.
masya89 [10]

La materia no se crea ni se destruye solo se transforma

Explanation:

«En toda reacción química la masa se conserva, es decir, la masa total de los reactivos es igual a la masa total de los productos».

Los átomos ni de crean ni se destruyen,durante una reacción química.Por lo tanto una ecuación química ha de tener el mismo numero de atomos de cada elemento a ambos lados de la flecha. Se dice entonces que la ecuación esta balanceada

Espero y te sirva!!

5 0
3 years ago
Determine the number of valence electrons in pcl₃ and then draw the corresponding lewis structure.
Nikolay [14]

The number of valence electrons in PCl_{5} will be 26.

The atom's outermost inhabited shell is where valence electrons are found. They are significant because they have a major impact on how an atom's chemical characteristics are determined.

The number of valence electron in P in 5 and number of valence electron in Cl is 7. There are one molecule of P and three molecule of Cl in  PCl_{5}  molecule. By adding all valence electrons , the total number of valance electrons will be 26.

The Lewis structure of  PCl_{5}  is shown as:

Therefore, the number of valence electrons in PCl_{5} will be 26.

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7 0
2 years ago
Ethanol (density = 0.789 g/ml) combusts and produces 34.8 g h2o. what was the original volume of the ethanol?
tino4ka555 [31]
I'm not completely sure but I think it is 27.4572. Hope I helped a little.
8 0
4 years ago
Read 2 more answers
What is the gravitational force cause<br>​
Norma-Jean [14]

Answer: Gravity

Explanation: The answer is gravity: an invisible force that pulls objects toward each other. ... So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.

5 0
3 years ago
Read 2 more answers
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