The temperature of a sample of liquid water changes from 50°C to 30°C. Whic

happen at the molecular level?

A balloon is a sphere with a radius of 5.0 m. the force of the air against the wall of loan is 45 N. what is the air pressure inside the balloon? (Surface area = 12.56 x radius 2, 1 Pa = N/m^2)

How many coulombs of electrical charge are transferred from pb to pbo2?

A 4.0g sample of iron was heated from 0c to 20c. it absorbed 35.2j of energy as heat. what is the specific heat of this piece of iron

How many moles of aluminum oxide will be produced from 0.50 mol of oxygen? 4 al + 3 o2 2 al2o3?

Raw potatoes are composed of about 18%-20% starch and approximately 75% water. Before frying, raw potatoes are peeled and then washed. Assume that 8% by weight of the raw potatoes is lost in the peeling.

Draw the organic product of the following nucleophilic reaction

How does the energy of the activated complex compare with the energies of reactants and products? select one: a. it is lower than the energy of both reactants and products. b.

A student asked to convert measurements from liters to mililiters and from mililiters to liters. His answers are shown in bold in the choices shown below. On which choice did he make a mistake?

Donald is making a model of a nitrogen atom. The box for nitrogen in the periodic table is shown. To represent a neutral atom, which of these must Donald include in his model?

What are the charges and relative masses of the 3 main subatomic particles