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pogonyaev
3 years ago
6

Consider the unbalanced chemical equation HBr + B = BBr3 + H2. When

Chemistry
1 answer:
Vitek1552 [10]3 years ago
4 0

Answer:

B and BBr3

Explanation:

1) 3HBr + B = BBr3 + H2 (double all equation because H2)

2) 6HBr + <em>2B </em>= <em>2BBr3</em> + 3H2

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5 atoms Pb to mol Pb
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0,83 x 10-²³ mol

Explanation:

n=N/Na

n=5:(6,02 x 10²³)

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3 years ago
Q- Which two positions show the location of the moon in its gibbous phases as seen from Earth?
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Explanation:

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3 years ago
How many moles of chlorine are used up in a reaction that produces 0.35kg of BCl3
maw [93]

4.48 mol Cl2. A reaction that produces 0.35 kg of BCl3 will use 4.48 mol of Cl2.

(a) The <em>balanced chemical equation </em>is

2B + 3Cl2 → 2BCl3

(b) Convert kilograms of BCl3 to moles of BCl3

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Moles of BCl3 = 350 g BCl3 x (1 mol BCl3/117.16 g BCl3) = 2.987 mol BCl3

(c) Use the <em>molar ratio</em> of Cl2:BCl3 to calculate the moles of Cl2.

Moles of Cl2 = 2.987 mol BCl3 x (3 mol Cl2/2 mol BCl3) = 4.48 mol Cl2

4 0
3 years ago
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8 0
3 years ago
In a liquid, the energy required to increase the surface of the area by a unit amount is called :a.dipole-dipole force. b.viscos
Sedaia [141]

Answer:

D. Surface tension.

Explanation:

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