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2 years ago

What property of metals is reactivity

2 answers:

7 0

The reactivity of a metal is determined by these things.
Firstly, the number of electrons in the outer shell; the fewer the number of electrons in the outer shell, the more reactive the metal.
The number of electron shells also affects reactivity, the more electron shells there are, the more reactive the metal.

Effectus [21]2 years ago

5 0

The reactivity of metals are determined by the number of electrons on the outermost shell

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Which element is in the same family as Chlorine (Cl) and Fluorine (F)?

ValentinkaMS [17]

Answer/Explanation:

Chlorine and Fluorine are in the Halogen family. The elements in the Halogen family are:

Fluorine (F)

Chlorine (Cl)

Bromine (Br)

Iodine (I)

Astatine (At)

Tennessine (Ts)

Hydrogen (H) is a nonmetal

Oxygen (O) is a nonmetal

Lithium (Li) is an alkaline metal.

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Answer:

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2 years ago

What is the mass, in grams, of one mole of any substance known as?

Mashutka [201]

The answer is B. the molar mass.

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2 years ago

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QveST [7]

Johnny should have thrown away the unused chemicals because they still could have mixed with the other chemicals and it could cause a reaction.

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2 years ago

How many atoms are in 0.75 moles of CH4?

Anastasy [175]

Answer:

Explanation:

Thus, if we have 6.022 × 10 23 O atoms, we say we have 1 mol of O atoms. If we have 2 mol of Na atoms, we have 2 × (6.022 × 10 23) Na atoms, or 1.2044 × 10 24 Na atoms. Similarly, if we have 0.5 mol of benzene (C 6H 6) molecules, we have 0.5 × (6.022 × 10 23) C 6H 6 molecules, or 3.011 × 10 23 C 6H 6 molecules.

For example the atomic mass of methane (CH4)is 12 amu for the carbon plus 4 x 1 amu for the four hydrogens, for a total of 16 amu. Therefore the molar mass of methane is 16g. We say that one mole of methane has a mass of 16 g, and that there are 6.022 x 1023 atoms in that mass of methane.

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2 years ago