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3 years ago

Pb(NO3)2+K2CrO4 --> PbCrO4+KNO3 How do you balance this?

Chemistry

1 answer:

belka [17]3 years ago

5 0

Answer:

Pb(NO₃)₂ + K₂CrO₄ ⟶ PbCrO₄ + 2KNO₃

Step-by-step explanation:

The unbalanced equation is

Pb(NO₃)₂ + K₂CrO₄ ⟶ PbCrO₄ + KNO₃

Notice that the complex groups like NO₃ and CrO₄ stay the same on each side of the equation.

One way to simplify the balancing is to replace them with a single letter.

(a) For example, let X = NO₃ and Y =CrO₄. Then, the equation becomes

PbX₂ + K₂Y ⟶ PbY + KX

(b) You need 2X on the right, so put a 2 in front of KX.

PbX₂ + K₂Y ⟶ PbY + 2KX

Pb(NO₃)₂ + K₂CrO₄ ⟶ PbCrO₄ + 2KNO₃

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Nonamiya [84]

What you have to do is find a periodic table and add the mass of each atom that the compound is made of.

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3 years ago

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ki77a [65]

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B) Cesium: 1s² 2s²2p⁶ 3s²3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s¹

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A) Sn -Tin - Four valence electrons

B) La - Lanthanum - Three valence electrons

C) Mn - Manganese - Seven valence electrons

D) Zn- Zinc - Two valence electrons

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Learn more about Quantum numbers here brainly.com/question/2292596

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2 years ago

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nasty-shy [4]

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3 years ago

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vampirchik [111]

Answer:

The answer to your question is below

Explanation:

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