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2 years ago

Cual de estas magnitudes corresponde a magnitudes fundamentales?

Chemistry

1 answer:

zaharov [31]2 years ago

7 0

Answer:

A las unidades fundamentales les corresponden las magnitudes fundamentales siguientes: Longitud, el Tiempo, la Masa, la Temperatura, la Intensidad de corriente eléctrica, la Intensidad luminosa y la Cantidad de sustancia.

Explanation:

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2 years ago

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3 years ago

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Albus Dumbledore provides his students with a sample of 19.3 g of sodium sulfate. How many oxygen atoms are in this sample

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3.27·10²³ atoms of O

Explanation:

To figure out the amount of oxygen atoms in this sample, we must first evaluate the sample.

The chemical formula for sodium sulfate is Na₂SO₄, and its molar mass is approximately 142.05 $\frac{g}{mol}$ .

We will use stoichiometry to convert from our mass of Na₂SO₄ to moles of Na₂SO₄, and then from moles of Na₂SO₄ to moles of O using the mole ratio; then finally, we will convert from moles of O to atoms of O using Avogadro's constant.

19.3g Na₂SO₄ · $\frac{1 mol Na^2SO^4}{142.05g Na^2SO^4}$ · $\frac{4 mol O}{1 mol Na^2SO^4}$ · $\frac{6.022x10^2^3}{1 mol O}$

After doing the math for this dimensional analysis, you should get a quantity of approximately 3.27·10²³ atoms of O.

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3 years ago

Cual de estas magnitudes corresponde a magnitudes fundamentales?​

Cual de estas magnitudes corresponde a magnitudes fundamentales?