Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
Explanation:
The the percent yield of the given reactions is the ratio of the actual yield and the theoretical yield expressed as a percentage.
<h3>What is percent yield of a reaction?</h3>
The percent yield of a reaction is the ratio the actual yield and the theoretical yield of a reaction expressed as a percentage.
- Percent yield = actual yield/theoretical yield × 100%
The actual yield is obtained from the experiment while the theoretical yield is obtained from the equation of the reaction.
The percent yield of a reaction gives an indication of how efficient the reaction conditions were.
The equation of the reaction in the given question is not stated.
Therefore, the percent yield of the given reactions is the ratio of the actual yield and the theoretical yield expressed as a percentage.
Learn more about percent yield at: brainly.com/question/17127987
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Answer:
The light is most intense where it strikes Earth _ directly_______ to its surface.
Explanation:
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You have to add 50 mL of 0.75% to 100 mL of 1.5% to get 150 mL of 1.25% of sugar solution.
Atomic number is equal to the number of electrons in a neutral atom. ... Niobium has an atomic number of 41. ... Determine the number of protons, electrons, and neutrons for each isotope described ... Potassium-41. 19
