Question and answer
Which chemical equation is balanced? A. H2 + O2 - > H2O B. H2 + O2 - > 2H2O C. 2H2 + O2 - > 2H2O D. 2H2 + 2O2 - > 2H2O
Question
Asked 4/7/2014 6:41:37 PM
Updated 4/9/2014 11:48:32 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [4/9/2014 11:47:24 PM]
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Original conversation
User: Which chemical equation is balanced? A. H2 + O2 - > H2O B. H2 + O2 - > 2H2O C. 2H2 + O2 - > 2H2O D. 2H2 + 2O2 - > 2H2O

Weegy: 2H2 + O2 - > 2H2O is the balanced equation.
emdjay23|Points 3298|

User: Which chemical equation is balanced? A. 2Mg + O2 - > MgO B. Mg + O2 - > 2MgO C. 2Mg + O2 - > 2MgO D. 2Mg + 2O2 - > 2MgO

Weegy: A chemical equation is balanced c. 2Mg + O2 -> 2MgO
lixie007|Points 56|

User: How does the law of conservation of matter apply to chemical equations? A. The sum of the coefficients on each side of the equation must be the same. B. The sum of the atomic masses on both sides of the equation must be the same. C. The sum of the atomic numbers on both sides of the equation must be the same. D. The total number of atoms of each element on both sides of the equation must be the same.

Weegy: The law of conservation of matter apply to chemical equations when: The sum of the atomic masses on both sides of the equation must be the same.
emdjay23|Points 3298|

User: What is a coefficient in a chemical equation? A. the subscript after an atomic symbol B. a subscript before an atomic symbol C. a number following an elemental or molecular symbol D. a number preceding an elemental or molecular symbol

Weegy: coefficient is D. a number preceding an elemental or molecular symbol
jicoleoncio|Points 25|

User: In a chemical equation, what name does the left side have? A. sum B. yield C. products D. reactants

Weegy: D.reactants
asero1010|Points 4484|

User: Which coefficients balance this equation? _H2 + _N2 -> _NH3 A. 1, 2, 3 B. 2, 3, 2 C. 3, 1, 2 D. 4, 1, 3

Weegy: Coefficients 3, 1, 2 balance the equation _H2 + _N2 -> _NH3. ***3H2 + 1N2 -> 2NH3.
emdjay23|Points 3298|

User: Which chemical equation is balanced? A. K2O + H2O -> KOH B. K2O + H2O -> 2KOH C. K2O + 2H2O -> 2KOH D. 2K2O + 2H2O -> 2KOH

Weegy: B. K2O + H2O -> 2KOH
csnyder83|Points 1610|

User: Which coefficients balance this equation? _CH4 + _O2 -> _CO2 + _H2O A. 1, 1, 1, 1 B. 1, 1, 2, 1 C. 1, 2, 1, 2 D. 2, 1, 2, 1

Weegy: B. 1, 2, 1, 2 Answer found on:
hellphoenix|Points 92|

User: Which chemical equation is balanced? A. CO2 + 4H2 -> CH4 + 2H2O B. 4CO2 + H2 -> CH4 + 2H2O C. CO2 + 4H2 -> 2CH4 + 2H2O D. 2CO2 + 2H2 -> 2CH4 + 2H2O

Weegy: A. CO2 + 4H2 -> CH4 + 2H2O
emem0910|Points 235|

User: Which coefficients balance this equation? _Al + _O2 -> _Al2O3 A. 2, 3, 1 B. 3, 2, 2 C. 4, 2, 2 D. 4, 3, 2

Weegy: A. 2, 3, 1
csnyder83|Points 1610|

Question
Asked 4/7/2014 6:41:37 PM
Updated 4/9/2014 11:48:32 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [4/9/2014 11:47:24 PM]
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Rating
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The coefficients that balance this equation 4Al + 3O2 -> 2Al2O3 is: D. 4, 3, 2
Added 4/9/2014 11:48:32 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/9/2014 11:56:42 PM]
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The word "nitrogen" could stand for a(n) A. atom. B. element. C. molecule. D. All of these could describe nitrogen.
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Updated 1/14/2017 4:50:08 AM
1 Answer/Comment
The word "nitrogen" could stand for all of the above (atom, element, and molecule).
Added 1/14/2017 4:50:08 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [1/14/2017 6:43:05 AM]
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The columns in the periodic table are also called: FAMILIES.
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A diamond has a density of 3.5 g/cm³. What is the mass of a diamond with a volume of 0.3 cm³? A. 11 g B. 1.2 g C. 1.05 g D. 0.086 g
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Updated 8/3/2014 6:15:33 AM
1 Answer/Comment
Mass is defined as the amount of matter contained in an object.
Added 8/3/2014 6:15:33 AM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [8/3/2014 2:38:28 PM], Rated good by sujaysen
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