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Makovka662 [10]
3 years ago
12

Qué concluyó Proust en relación a la ley de las proporciones definidas?

Chemistry
1 answer:
goblinko [34]3 years ago
5 0

Answer:

Proust concluded that the elements in a chemical compound always present in the same ratio by mass.

Explanation:

In English, this finding became known as the Law of Definite Proportions.

For example, a 100 g sample of copper(II) sulfide always contains 66.46 g of copper and 33.54 g of sulfur.  

The mass ratio in CuS is

Cu/S = 66.46/33.54 = 1.982/1

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The molarity of a solution is the number of moles of a substance divided by the volume in liters prepared.

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In order to calculate the mass of solute we need to convert the volume and molarity to moles

1.421 L solution \times\frac{0.0730 moles}{1 Lsolution}= 1.037 mol NaCO_3

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3 years ago
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A covalent bond is formed between two non-metals that have similar electronegativities.

An <em>i</em><em>o</em><em>n</em><em>i</em><em>c</em><em> </em><em>b</em><em>o</em><em>n</em><em>d</em> is formed between a metal and a non-metal. Non-metals(-ve ion) are "stronger" than the metal(+ve ion) and can get electrons very easily from the metal. These two opposite ions attract each other and form the ionic bond.

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A turtle moves at a speed of 1.0km/h. How fast is the turtle moving in meter per second
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The speed of the turtle is 9.41 centimeters per second.

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2 years ago
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Answer:

Kr has one more electron than br and so, the nuclear charge increase, which means the nuclear attraction between the nucleus and outer most electron will increase and so will be harder to remove the electron from Kr than Br, so Kr has higher 1st ionisation.

Mark me brainliest!

God bless!

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3 years ago
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Pitch is sometimes defined as the fundamental frequency of a sound wave. For most practical purposes, this is fine, and pitch and frequency can be thought of as equivalent. On the other hand, for most practical purposes, amplitude can be thought of as volume.

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Hope that helps!

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