Described uranium (a type of nuclear fuel)

Chemistry

1 answer:

Sveta_85 [38]4 years ago

8 0

Answer:

Uranium are being used as nuclear fuel as it easily split away the atoms.

Explanation:

Uranium are generally used as fuel for nuclear fission reaction in the nuclear power plants. They use U-235 as fuel, as it can split away the atoms easily. Other than silver, uranium is more common but its availability is very low.i.e. only 0.7%. when U-235 absorbs neutron, it undergoes nuclear fission. The heavy nucleus gets splitted over two or even more lighter nuclei, along with release of kinetic energy, gamma rays and also some free electrons.

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Answer:

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Explanation:

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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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Answer:

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