50 points + brainliest to whoever is right

which of the following is not true about percent yield?
percent yield is often less than 100%
percent yields measures the efficiency of a reaction carried out in a lab
percent yield of 100% is unlikely when reactants or products were no carefully measured
percent yield is the ratio of theoretical yield to actual yield expressed as a percent

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al