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2 years ago

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Below is the Lewis structure of the hydrogen peroxide (H202) molecule. H: O:O:H Count the number of bonding pairs and the number

of lone pairs around the right oxygen atom. bonding pairs:

1 answer:

Zigmanuir [339]2 years ago

8 0

Idek what would be the point

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How many moles of SnCl2 will be produced if 85.3 g of FeCl3 is reacted with an excess of Sn for the following reaction:2 FeCl3(s

Ronch [10]

Answer:

The answer to your question is 0.79 moles of SnCl₂

Explanation:

Data

moles of SnCl₂ = ?

mass of FeCl₃ = 85.3 g

excess Sn

Balanced chemical reaction

2 FeCl₃ + 3 Sn ⇒ 3 SnCl₂ + 2 Fe

Process

1.- Convert the mass of FeCl₃ to moles

Molar mass of FeCl₃ = 56 + (35.5 x 3)

= 56 + 106.5

= 162.5 g

Use proportions to find the moles of FeCl₃

162.5 g -------------------- 1 mol

85.3 g ------------------- x

x = (85.3 x 1) / 162.5

x = 0.525 moles

2.- Find the number of moles SnCl₂

2 moles of FeCl₃ ----------------- 3 moles of SnCl₂

0.525 moles ----------------- x

x = (0.525 x 3) / 2

x = 0.79 moles of SnCl₂

4 0

3 years ago

Uestion 3 (1 point)

elena-s [515]

Answer:

density=mass/volume.

density=14/18

=0.777777777 ~ 0.8g/ml.

It will float because the it lesser than the density of water.

6 0

2 years ago

Read 2 more answers

The Ksp of calcium carbonate in water at 25 °C is 2.25 x 10-8. CaCO3(s) <----> Ca2+ (aq) + CO3 2- (aq) What is favored at

seraphim [82]

Answer:

the solubility of CaCO3 is 0.015g/l 25 °C

is favored at equilibrium

Explanation:

The Ksp of calcium carbonate in water at 25 °C is 2.25 x 10-8. CaCO3(s) <----> Ca2+ (aq) + CO3 2- (aq) What is favored at equilibrium?

solubility is the property of a solute to dissolve in a solvent(liquid, gas ) to form a solution(soution can be saturated ,unsaturated, or supersaturated)

CaCO3(s) <----> Ca2+ (aq) + CO3 2- (aq)

in partial dissociation , we can say

2.25x 10^-8= $Ca^{2+} +CO^{2-}_{3} }$

let Ca^2+=CO3^-2=S

2.25x10^-8=S*S

S^2=2.25x10^-8

S=0.00015mol/L

Converting that to g/l

the relative molecular mass of CaCO3=100g/mol

0.00015*100g/mol

0.015g/l

the solubility of CaCO3 is 0.015g/l @room temperature

is favored at equilibrium

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3 years ago

How many moles are 3.21×10^28 molecules of N2?

kow [346]

Answer:5 to the 7th power

Explanation:

Divided 7 and y then add 4

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2 years ago

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astraxan [27]

Answer:

<h2>belajar jangan malas malas</h2>

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2 years ago