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3 years ago

The total number of electrons in one mole of fluorine molecules (F2) is

2 answers:

6 0

<span>Fluorine's atomic number is 9, meaning it has 9 protons and 9 electrons in per atom. One mole is 6.0x10^23, so your answer is 4.</span>

galben [10]3 years ago

3 0

Has 9 protons and 9 electrons in per atom.........

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Margaret [11]

Answer:

Explanation:

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gas molecules move freely and collide with dust particles which is correct

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2 years ago

A welding torch produces a flame by burning acetylene fuel in the presence of oxygen the energy released from the acetylene fuel

Volgvan

Answer : Chemical energy to thermal energy

Explanation : When the welding torch uses the acetylene fuel for producing flame it is using the chemical acetylene to generate energy in form of light, after the flame is produced the fuel is used for melting a metal which is utilizing the thermal energy. So the ultimate final product is generated from chemical to thermal and so the energy transformation is from chemical energy to thermal energy.

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2 years ago

Read 2 more answers

Calculate the molarity of a solution made by dissolving 4.0 g of calcium bromide, CaBr2, in enough water to give 200 mL of solut

Troyanec [42]

Answer:

0.1 M

Explanation:

Molarity = number of moles / litres of solution.

4 g of calcium bromide = 0.02 mol

(found by dividing 4 g by the atomic mass of CaBr2, which is 199.886)

200 mL of solution = 0.2 litres

Molarity = 0.02 mol / 0.2 L = 0.1 M

8 0

2 years ago

Heat moves from what source by convection and radiation?

Alona [7]

Answer:

heat can move from any source but if we are being legitimate it moves from convection

Explanation:

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3 years ago

Consider 2H2 + O2 → 2H2O. To produce 1.2 g water, how many grams of H2 are required? Report to the correct number of significant

Elden [556K]

Answer:

0.133 mol (corrected to 3 sig.fig)

Explanation:

Take the atomic mass of H=1.0, and O=16.0,

no. of moles = mass / molar mass

so no. of moles of H2O produced = 1.2 / (1.0x2+16.0)

= 0.0666666 mol

From the equation, the mole ratio of H2:H2O = 2:2 = 1:1,

meaning every 1 mole of H2 reacted gives out 1 mole of water.

So, the no, of moles of H2 required should equal to the no, of moles of H2O produced, which is also 0.0666666 moles.

mass = no. of moles x molar mass

hence,

mass of H2 required = 0.066666666 x (1.0x2)

= 0.133 mol (corrected to 3 sig.fig)

3 0

3 years ago