The total mass of the reactants is ________ the total mass of the products in a chemical reaction.
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Answer 1) : The density of the hot air inside the balloon can be found out by using ideal gas equation;
PV = nRT;
As n is number of moles and in gases, number of moles along with mass per mole is equal to the density of the gas.
If the moles in the gas are more the density will be more.
here, density (ρ) = mass (m) / volume (V); substituting in the ideal gas equation we get,
ρ = mP / RT
Answer 2) ρ (hot air) = ρ (cold air) X
Here according to the formula because T(hot air) >T(cold air),
So, the density of hot air greater than the density of cold air.
The relationship between the ρ (h) = ρ(c) X
Answer : The number of automobiles needed are,
Explanation :
First we have to calculate the mass of blueberries.
As, 1.0 mole of blueberries contains blueberries
So, 0.75 grams of blueberries contains blueberries
Mass of blueberries =
Now we have to calculate the number of automobiles needed.
Number of automobiles needed =
Number of automobiles needed =
Number of automobiles needed =
Thus, the number of automobiles needed are,