A3.53g sample of (nh4no3) was added to 80.0mlof water in a constant pressure calorimeter of negligible heat capacity. as a result the temperature of the water decreased from 21.6c to 18.1c calculate the heat of solution of nh4no3. me

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave