Answer:
banging rocks together to see which make make a spark and create fire painting pictures is an example of art and sleeping in caves is survival
Answer:
D
Explanation:
On the left hand side there are a total of 4 hydrogen and 2 oxygen but on the right hand side there Is only 2 hydrogen and 1 oxygen
Molar mass N2 = 14 x 2 => 28.0 g/mol
1 mole N2 ------------- 28.0 g
? moles N2 ----------- 550 g
550 x 1 / 28.0 => 19.64 moles of N2
Correct Answer: Option B i.e. <span>It is not balanced for charge or for number of atoms
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Reason:
In the present reaction of interest is
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There are reactant side has 2 oxygen atoms, whereas product side has only one oxygen atom. Hence, mass is not balanced.
Also, overall charge on reactant side is zero, but on product side is -2. Hence, charge of reaction is not balanced.