How many grams of glucose, C6H12O6, do you need to make a 50 mL solution that has a concentration of 2.0 M?

18g

Explanation:

Molarity = n/V

Where;

n = number of moles (mol)

V = volume (L)

Based on the given information,

M = 2.0 M

V = 50 mL = 50/1000 = 0.05L

Using; Molarity = n/V

n = molarity × volume

n = 2.0 × 0.05

n = 0.1mol

Using mole = mass/molar mass

Molar mass of C6H12O6 = 12(6) + 1(12) + 16(6)

= 72 + 12 + 96

= 180g/mol

Mass = mole × molar mass

Mass = 0.1 × 180

Mass = 18g

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.