Agraduated cylinder contains 15.75 ml of water. a metal that weighs 31.745 g is added. the final reading is 38.55 ml. using the correct number of significant figures, determine the density of the metal = g/ml first determine volume of metal: report result to the same number of decimal places as the number with the least number of decimal places. use this volume in calculation. second determine density of metal: d=m/v report result to the same number of significant figures as the number with the least number of significant figures. do not use exponential notation in answer.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.