If gravity ceased to exist on earth, what would happen to our life supporting atmosphere ?

a. there would be no changes to the atmosphere since it does not depend on gravity

b. the atmosphere would become thicker and more dense

c. the atmosphere may cease to exist since gases may float out into space

d. the atmosphere would become thin and it would be easier to breathe

Express the following number in scientific notation. 0.026890 =

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

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction