How would you determine the proper number of significant figures for measurement of a

liquid using a graduated cylinder?

Scientific investigations most often start from observations of the natural world and which of the following? Models, computers, variables, questions

Write the reaction that occurs when propyl methanoate is hydrolyzed in water and in NaOH

A 775 mL sample of NO2 is at STP. if he volume changes to 615 mL and the temperature changes to 25.0, what will be the new pressure in ATM?

How many atoms are in a 176 gram sample of nickel

A chemical supply company sells sulfuric acid (H2SO4) in a concentration of 4.00 M. What volume of this solution would you need to make 12.0 mL of a 0.50 M H2SO4 solution? what is the volume needed?

Which is the most practical argument for the continued funding of space exploration? a) Space exploration will one day show whether life exists on other planets in star systems similar to ours.

33 protons 36 electrons 45 neutrons

The periodic table includes all of the known elements in the world. how are elements arranged on the periodic table?

The pOH of a solution is 13.28. What is the [OH]

If you can choose any animal in the world to be, what animal would you choose. (I'd be a wolf or a dog, mostly a wolf)