A student recorded the mass of a sample of copper to be 23.67 grams and its volume to be 2.64 ml. How many significant digits should the student use when reporting the density?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?