A 3 kb double-stranded DNA plasmid is dissolved in water at 1 mg/ml. Given an average relative molecular mass per nucleotide of 300, what is the concentration of this plasmid?

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

How many grams of aluminum will there be in 98g of al2o3?

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.