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garri49 [273]
2 years ago
9

What does the (lll) in iron ion mean

Chemistry
1 answer:
aivan3 [116]2 years ago
6 0
<span>Iron(III) oxide, hope this helps</span>
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how many moles of a nonvolatile, nonelectrolyte solute are required to lower the freezing point of 1000 grams of water by 5.58
Ivan

Answer:

Explanation:

Using freezing point depression formula,

ΔTemp.f = Kf * b * i

Where,

ΔTemp.f = temp.f(pure solvent) - temp.f(solution)

b = molality

i = van't Hoff factor

Kf = cryoscopic constant

= 1.86°C/m for water

= (0 - (-5.58))/1.86

= 3.00 mol/kg

Assume 1 kg of water(solvent)

= (3.00 x 1)

= 3.00 mol.

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3 years ago
What element is in group 17 and period 3 of the periodic table?
Anastasy [175]

Answer:

Chlorine is the element located in period 3, group 17 of the periodic table.

Explanation:

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3 years ago
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Answer:

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3 years ago
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mestny [16]

Answer:

45 neutrons

Explanation:

Bromine has 35 protons and a mass number of 80. a) How many neutrons does the atom of bromine have? The mass number = protons + neutrons. Bromine has a mass number of 80 and 35 protons so 80-35 = 45 neutrons.

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How do scientists predict the polarity of molecules, the distribution of non-polar and polar molecules?
EastWind [94]

Answer:

Explanation:

Polar molecules interact with other molecules of similar polarity to form solutions. Non-polar molecules do not interact the same way.

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