An object weighing 8.94 g is dropped in to graduated cylinder containing water. The water level rises from 16.73 mL to 21.05 mL. Calculate the density of the object.

Calculate the number of moles of ethane in 100 grams

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume