According to dalton's atomic theory, when elements react, their atoms combine in

The temperature inside your freezer is 0 degrees Celsius. You place a balloon with an initial temperature of 30 degrees C and a volume of 0.75 liters in the freezer.

An arrhenius acid has A only hydroxide ions solution b only hydrogen ions solution c hydrogen ions as the only positive ions in solution d hydrogen ions as the only negative ions in solution

Examples for combustion reactions

Arrange the following elements in order of increasing first ionization energy. Mg, Al, Si, P, S

Does energy travel from hot to cold?

Water learned in science class that different substances release heat at different rates. He decides to test this. At home, Walter turns the oven to 200°F.

List all of the species that would have a net attraction to the positive charge: CH4, CH2Cl2, H3O+, H2O, C2H2Cl2, CO2, N3-,

if the units cancel and you are left with only the desired units for the problem, all the rations were set up correctly. True or false?

How many valence electrons are in c4h6br2?

Calculate the empirical formula from the given percent compositions. 82% nitrogen (N), 18% hydrogen (H)