63.1 g of NaN3 is formed when 50.0 g of sodium is reacted with 40.5 g of nitrogen according to the balanced chemical reaction
The balanced reaction equation is;
2 Na + 3 N2--> 2 NaN3
Number of moles of Na = 50.0 g/23 g/mol = 2.17 moles of Na
Number of moles of Nitrogen = 40.5 g/28 g/mol = 1.45 moles of N2
We have to obtain the limiting reactant, this is the reactant that yields the least number of moles of product.
For Na
2 moles of Na yields 2 moles of NaN3
2.17 moles of Na yields 2.17 moles of NaN3 (reaction is 1:1).
For N2
3 moles of N2 yields 2 moles of NaN3
1.45 moles of N2 yields 1.45 * 2/3 = 0.97 moles of NaN3
So, N2 is the limiting reactant. Mass of product formed depends on the limiting reactant.
Mass of NaN3 = 0.97 moles of NaN3 * 65 g/mol = 63.1 g of NaN3
Therefore, 63.1 g of NaN3 is formed when 50.0 g of sodium is reacted with 40.5 g of nitrogen according to the balanced chemical reaction
Learn more: brainly.com/question/9743981
Thank you
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
A closed system is completely closed to the outside environment. Every interaction is transmitted inside that closed system.
Answer:
See explanation
Explanation:
A reaction may be exothermic or endothermic. In an exothermic reaction, energy is given out from the reaction system. This means that energy is transferred to the surroundings and the reactants have more energy than the products.
A reaction in which energy is absorbed from the surroundings is called an endothermic reaction. In this case, the products have more energy than the reactants.
So the statement "If a reaction transfers energy to the surroundings the product molecules must have more energy than the reactants” is erroneous. The error in the statement is the part that says "...the product molecules must have more energy than the reactants”. It ought to have read, "the reactants have more energy than the products" in accordance with the explanation above.