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Natasha2012 [34]
3 years ago
15

Balance this equation: CH4 +2O2--------> ___ CO2 + ___ H2O

Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
5 0

Answer:

b-1 CO2+ 2H2O

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Sodium metal reacts with chlorine gas in a combination reaction. Write a balanced equation to describe this reaction. Click in t
umka2103 [35]

Answer:

Na + Cl ⇒ NaCl

Explanation:

Skeleton equation: Na + Cl ⇒ NaCl

This is already balanced so that is the answer.

6 0
3 years ago
A chemist designs a galvanic cell that uses these two half-reactions:
Virty [35]

Answer:

MnO4⁻ (aq) + 8H⁺ (aq) + 5Fe³⁺ (aq) →Mn(aq)²⁺ + 4H2O (l) + 5Fe²⁺(aq)

Explanation:

a)

MnO4⁻ (aq) + 8H⁺ (aq) + 5e⁻ → Mn(aq)²⁺ + 4H2O (l)

b)

5Fe³⁺ (aq) +5e⁻ → 5Fe²⁺(aq)

c)

MnO4⁻ (aq) + 8H⁺ (aq) + 5Fe³⁺ (aq) →Mn(aq)²⁺ + 4H2O (l) + 5Fe²⁺(aq)

8 0
3 years ago
How many valence electrons do the alkaline earth metals have?
fenix001 [56]

Answer:

\boxed{2}

Explanation:

Alkaline earth metals are in group 2. The number of valence electrons of elements in group 2 is 2.

5 0
3 years ago
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If three potatoes have a mass of 667 g, what will be the mass of 100 potatoes? A. 200 kg B. 22.2 kg C. 2223 g D. 20.0 kg
adell [148]

Answer: B- 22.2 kg

Explanation: If three potatoes have mass of 667 g that means that each potato weighs 667/3= 222.33 g (approx) so 100 potatoes must be 100*222.33= 22233 g which equals 22.2 kg because 1 g=1000 kg

8 0
3 years ago
Explain how water is able to control fire.<br><br><br>Answer ASAP<br><br>Plzz​
klemol [59]

Answer: Fire requires oxygen to burn. Water "smothers" fire and prevents it from acquiring more oxygen. Fire also requires heat, which cool water may prevent/remove.

7 0
3 years ago
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