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Which equation is correctly balanced:
$A.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$
$B.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$
$C.$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$
$D.$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$
Alumina is $Al_2O_3$, which is the product of aluminum oxidation. None of your equations shows the correct formulae. We can rewrite the correct equation as: $2Al(s)+ 3/2O_2(g) rarr Al_2O_3(s)$ This...
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Which type of chemical reaction is represented by the equation $4Al(s)+3O_2 (g) -> 2Al_2O_3 (s)$?
Aluminum is oxidized; oxygen is reduced. What are the elemental oxidation states in $Al_2O_3$?
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What type of reaction is $4Al + 3O_2 ->Al_2O$?
$4Al(s) + 3O_2(g) rarr 2Al_2O_3(g)$ This is a redox reaction, and represents the oxidation of aluminum metal by dioxygen gas to give alumina.
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A chemistry has 14.5 g of Al and 7.5 g of $O_2$. What would the excess be for the following reaction: $4Al + 3O_2 -> 2Al_2O_3$?
To check excess and limiting reactants, the number of moles has to be found, and then divided by the coefficient. For the sake of shortening the equations, let us say...
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How many grams of Al are required to completely react with 81.2 g of MnO2. What is the mole ratio between MnO2 and Al in the balanced equation? 3MnO2 +4Al--> 3Mn+2Al2O3?
You'd need $"33.6 g"$ of aluminium to react with that much manganese dioxide. So, you've got your balanced chemical equation for this reaction $3MnO_(2(s)) + 4Al_((s)) -> 3Mn_((s))...
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How do you determine the gram-formula mass of the propane gas? State the mole ratio represented in the equation of oxygen to carbon dioxide. Calculate the number of liters of water vapor produced when 25.0 liters of oxygen gas are consumed?
For propane we have 3 carbons and 8 hydrogen atoms, so the gram-molecular weight is (312 + 81) = 44g/mol. The mole ratio of oxygen to carbon dioxide is 5:3,...
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Given the balanced equation representing the reaction between methane and oxygen: $CH_4 + 2O_2 -> CO_2 + 2H_2O$. According to this equation, what is the mole ratio of oxygen to methane?
$CH_4(g) + 2O_2(g) rarr CO_2(g) + 2H_2O(l)$ The equation explicitly tells us that one equivalent of methane gas reacts with two equiv of dioxygen to give one equiv of carbon...
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Using the reaction, $4Al + 3O_2 -> 2Al_2O_3$, how do you identify the limiting reactant in each of the following: 0.25 mol Al and .40mol $O_2$ and 58.5g Al and 98.0g $O_2$?
The limiting reactant is the reactant that is present in less amount. 4 mol of Al need to react completely of 3 mol of Oxygen (according with the reaction you...
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For the reaction,$2x$+$3y$+$4z$$ rarr$$ 5w$
Initially if 1 mole of $x$,3 mole of $y$ and 4 mole of $z$ is taken and 1.25 mole of $w$ is obtained then what is the % yield of this reaction?
This is a limiting reactant problem. We know that we will need a balanced equation and moles of each reactant. 1. Gather all the information in one place with...
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Which sample has the most number of atoms?
$A.$ $"1 mole of oxygen atoms;"$
$B.$ $"1 mole of oxygen molecules;"$
$C.$ $"1 mole of ozone molecules;"$
$D.$ $"Each sample contains the same number of atoms."$
Mass is a measure of the number of particles. Here you have $O$ atoms, and dioxygen, $O_2$, and ozone molecules, $O_3$ but each have the same mass by specification. There...
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