Answer:

Explanation:
¡Hola!
En este caso, al considerar la unidad de concentración de porcentaje masa/masa, podemos escribir su fórmula como:

Podemos identificar la masa de soluto (azúcar) como la incógnita, y resolverla como se muestra a continuación:

¡Saludos!
Answer: Yes we agree with the student's claim.
Explanation:
When the molecules are present in smaller size, more reactants can react as decreasing the size increases the surface area of the reactants which will enhance the contact of molecules.Hence, more products will form leading to increased rate of reaction.
On increasing the temperature will make more reactant molecules will have sufficient energies to cross the energy barrier and thus the number of effective collisions increases, thus leading to more products and increased rate of reaction.
When the solution is stirred , the molecule's kinetic energy and thus the rate of reaction increases.
Thus smaller size, stirring and increase of temperature will make the solution quickly.
The characteristic of the Bohr model that would best support his observation is this assumption: "The energy of the electron in an orbit is proportional to its distance from the nucleus. The further the electron is from the nucleus, the more energy it has." The discrete, bright, colored lines might represent the electrons and its distance from the nucleus. The lights are caused by the energy it has.
What you have to do is balance the chemical equations to make sure everything is even on both sides. If you want me to help you answer the questions comment back