Would your work in cleaning the beach be considered physical or a chemical change to the environment? Explain your reasoning.

Which statement summarizes the difference between law and theory?

Express BaO + O2-BaO2 as a chemical equation

A 55.9 g sample of water at 99.2 °c is placed in a constant pressure calorimeter. then, 23.9 g of zinc metal at 21.1 °c is added to the water and the temperature drops to 96.9 °c.

I need to show work on all my problems and I am not God in math

Determine the kinds of intermolecular forces that are present in each element or compound. you may want to reference (pages 466 - 476) section 11.3 while completing this problem.

The greenhouse effect is a result of the Sun's energy being absorbed by objects on the Earth and converted into which type of radiation? A) Radio B) Visible C) Infrared D) Ultraviolet

Which was the limiting reactant: the zinc or the hydrochloric acid? Remember that the limiting reactant is completely consumed in a reaction and no new product is formed unless more of the limiting reactant is added.

How many moles are in 4,55 X 10^23 molecules of CO2 (rounded)

In standardization of NaOH solution, a student found that 25.55cm3 of base neutralized exactly 21.35cm3 of 0.12M HCl. Find the molarity of the NaOH.

Which is a base unit in SI? A. centimeter B. kilogram C. gram D. grams/milliliter