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3 years ago

Which element has 32 protons in its nucleus? phosphorus cobalt germanium sulfur

Chemistry

2 answers:

eduard3 years ago

8 0

<span>Germanium is the element that has 32 protons in its nucleus.</span>

Misha Larkins [42]3 years ago

4 0

The element that has 32 protons in its nucleus is GERMANIUM.

The elements in the periodic table are arranged in the order of increasing atomic number. The atomic number of an element is actually the number of protons in that element. For the question given above, the atomic number of germanium is 32, this implies that it has 32 protons in its nucleus. For a neutral atom, the number of proton and electron in the atom is the same. Thus, germanium also has 32 electrons.

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3 years ago

Calculate the molarity of a solution prepared by dissolving 0.2 mol sucrose in enough water to make a 100 ml solution.

Lelechka [254]

Taking into account the definition of molarity, the molarity of a solution prepared by dissolving 0.2 mol sucrose in enough water to make a 100 mL solution is 2 $\frac{moles}{liter}$ .

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

<h3>Molarity in this case</h3>

In this case, you have:

number of moles= 0.2 moles
volume= 100 mL= 0.1 L

Replacing in the definition of molarity:

$molarity=\frac{0.2 mole}{0.1 L}$

Solving:

<u><em>molarity= 2 </em></u> $\frac{moles}{liter}$

Finally, the molarity of a solution prepared by dissolving 0.2 mol sucrose in enough water to make a 100 mL solution is 2 $\frac{moles}{liter}$ .

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2 years ago

The burning of a solid waste is called

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