Four students measured the mass of a piece of metal whose accurate mass is 34.75g. their result are 34.2g,33.75g,35.0g and 34.69g. what is the best estimate for the mass of the piece of metal? and why?

What is the polyatamic ion of thiosulfate

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum