In which of the following is number of electrons the ion contains given correctly

Will a horse galloping in a field produce and average velocity of zero

Find the number of moles of butane (c4h10) in 21g sample of butane gas

How many types of atoms can you expect to find in a sample of any element?

Sometimes the goals of different social institutions conflict, making it difficult to meet people's needs.

A student prepares a standardized solution of sodium hydroxide by the procedure outlined. The student first prepares a saturated solution of sodium hydroxide using freshly distilled or deionized water.

Which of the following IS a valid piece scientific evidence?

How are the input and output forces of the parts of a complex machine related?

Which would most likely be done while designing a solution? researching the current uses of a fuel type sketching a diagram of a new medical device reporting the results of using a prototype redesigning a model airplane that did not fly well

A sample of Xe takes 75 seconds to effuse out of a container. An unknown gas takes 60 seconds to effuse out of the identical container under identical conditions.

D a distinct pattern in the elements and proposed the law of octaves. What were his conclusions?