Chemistry, 10.12.2019 09:31 pmdare2551

Which of the following equations are balanced?
a: 2h2 + o2 → 2h2o

b: 2s + 3o2 → 2so3

c: li + cl2 → licl

d: 2k + 2h2o → h2 + 2koh

e: 2fe + cu(no3)2 → 2cu + fe(no3)2

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A: 2H₂ + O₂ → 2H₂O

H: 4 H:4
O: 2 O: 2

The equation is balanced.

B. 2S + 3O₂ → 2SO₃

S: 2 S: 2
O: 6 O: 6

The equation is balanced.

C. Li + Cl₂ → LiCl

Li: 1 Li: 1
Cl: 2 Cl: 1

The equation is not balanced.

2Li + Cl₂ → 2LiCl

Li: 2 Li: 2
Cl: 2 Cl: 2

D: 2K + 2H₂O → H₂ + 2KOH

K: 2 K: 2
H: 4 H: 4
O: 2   O: 2

The equation is balanced.

E: 2Fe + Cu(NO₃)₂ → 2Cu + Fe(NO₃)₂

Fe: 2 Fe: 1
Cu: 1 Cu: 2
  N: 2 N: 2
O: 6 O: 6

The equation is not balanced.

2Fe + 2Cu(NO₃)₂ → 2Cu + 2Fe(NO₃)₂

Fe: 2 Fe: 2
Cu: 2 Cu: 2
N: 4 N: 4
O: 12   O: 12

The following equations that are balanced are A, B, and D.

Answer from: Quest

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

Answer from: Quest

The correct answer is c

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Which of the following equations are balanced?
a: 2h2 + o2 → 2h2o

b: 2s + 3o2 →...

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