Which of the following is supportive evidence of the big bang theory? A. pulsars B. cosmic microwave background radiation C. galactic clusters D. the different shapes of galaxies

What final temperature (∘c) is required for the pressure inside an automobile tire to increase from 2.19 atm at 0 ∘c to 2.37 atm, assuming the volume remains constant?

Which law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constant?

What is the light transmission of roentgenium

What's the density if the volume is 30cm3

What characteristic of temperate rainforests makes reproduction easier for mosses and ferns?

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?

4. Calculate the final concentration if water is added to 1.5 L of a 12 M NaOH solution to make 3.0 L of a diluted NaOH solution. Your answer

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons