To
determine the empirical formula of the compound given, we need to
determine the ratio of the elements present in the compound. To do that we use the given amount of sample
of the compound and the masses of each of the element included. Then, we calculate for the number
of moles of each element. We do as follows:<span>
mass moles
Potassium 5.81 0.1486
Chlorine 5.27 0.1487
Oxygen 18.21 - 5.81 - 5.27 = 7.13 0.4456
Dividing the number of moles of each element with
the smallest value of number of moles, we will have the ratio of the elements:</span>
K = 1 Cl = 1 O = 3
Therefore, the empirical formula would be KClO3.
Depending what you have available there are a few different chemicals you can combine to show an obvious reaction without special equipment. Vinegar and Baking soda is a common mixture. Perhaps something like HCl and NaOH mixed will produce heat.
Answer:
NiO Does Not Dissolve In An Aqueous Solution Of NaNO3.
Explanation:
I thin that the answer to 3 is “hydroelectric”
Answer:
A chemical reaction that stores energy is called an endothermic reaction. More energy might be released as products form than the energy needed to break the reactants apart. This chemical reaction will release energy. In other words, it will be an exothermic reaction.
Explanation: