Calculate the areas and densities. Report the answers in the correct units. A. the area of a rectangle with sides measuring 3 times 10^1 cm and 3 times 10^-2 cm

B. the area of a rectangle with sides measuring 1 times 10^3 cm and 5 times 10^-1 cm

C. the density of a substance having a mass of 9 times 10^5 g and a volume of 3 times 10^-1 cm^3

D. the density of a substance having a mass of 4 times the 10^-3 g and a volume of 2 times 10^-2 cm^3

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

In which phase(s) do the molecules take the shape of the container?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.