1 mole contains <span> 10^23 molecules.</span>
A student determines the mass of a 100 mL beaker filled with 50 mL of water to be 154.34 grams. After a tablet reacts with the water, the mass including the dissolved tablet is 157.26 grams. 438 grams tablet was left in the beaker after the reaction.
<h3>What is Stoichiometry ?</h3>
Stoichiometry helps us use the balanced chemical equation to measure quantitative relationships and it is to calculate the amounts of products and reactants that are given in a reaction.
<h3>What is Balanced Chemical Equation ?</h3>
The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.
Now we have to write the balanced chemical equation
NaHCO₃ + H₂O → NaOH + H₂CO₃
Mass = 157.26 - 154.32
= 2.92
Volume = 100 + 50 ml
= 150 ml
Mass of tablet = 2.92 × 150
= 438 grams
Thus from the above conclusion we can say that A student determines the mass of a 100 mL beaker filled with 50 mL of water to be 154.34 grams. After a tablet reacts with the water, the mass including the dissolved tablet is 157.26 grams. 438 grams tablet was left in the beaker after the reaction.
Learn more about the Stoichiometry here: brainly.com/question/16060223
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the amount of substance that dissolves in a given quantity of solvent at a constant temperature is called the substance's C. solubility.
Answer:
A.) Q < K because Q decreased
B. shift right
Explanation:
Reactant-------->Products
K = Product/Reactant
An endothermic reffers to any reaction which absorbs energy from its surroundings, usually in the form of heat.
ΔH. In endothermic reactions, K increases when Temperature increases.
The given reaction is an endothermic reaction, and in an endothermic reaction, when there is increase in temperature, the product side is more favored. The system will shifts to the right side of the reaction. Q < K then K is constant and Q is decreased.then Q < K because Q decreased
The system respond to a temperature increase by shifting to the right