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PolarNik [594]
2 years ago
14

Fill in the Blank Question

Chemistry
2 answers:
timofeeve [1]2 years ago
8 0
The number of protons is unique to each element, and is what gives the element its atomic number.

When the element has an equal number of protons and electrons, then the element is electrically neutral (since the positive and negative charges cancel each other out).

So the answer for this question would be protons, and then electrons.
creativ13 [48]2 years ago
7 0

Answer:

Protons

Explanation:

It's the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Hope this helped, can I also get brainliest plz?

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Which of the following characteristics must be present for a substance to be called a mineral?
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3 years ago
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Suppose that 0.410 mol of methane, CH4(g), is reacted with 0.560 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole produc
Ber [7]

Answer:

The balanced equation for this reaction will be

                            CH4 + 4F2    →  CF4 + 4HF

We can see that 1 mole of methane requires 4 moles of fluorine but we have 0.41 moles of CH4 and 0.56mole of F2

So using the unitary method we will get that

  • 1 mole of CH4 → 4 mole of 4 mole of fluorine
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but we have only 0.56 mole of fluorine that means fluorine is the limiting reagent and the product will only be formed by only this amount of fluorine.

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now to find the heat released we have the formula as

DELTA H = n * Delta H of product - n *delta H of reactant

where n is the moles of the reactant and product.

note: since no information is given about the enthalpies of the species we leave it on general equation also you need to add the product side enthalpy of the species present and similarly on the product side.

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ValentinkaMS [17]

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Most carbon atoms have 6 neutrons in the nucleus.
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