Does anyone know any good science fair projects for 8th grade? It will mean a lot if u do! Need one asap

How many grams of oxygen are required to produce 9 grams of water at standard conditions? 2 H, + 0, → 2H20 grams

The volume of a gas at 2.0 atm is 3.0 L. What is the volume of the gas at 1.5 atm at the same temperature?

1. Acid rain includes HNO3 and what other chemical? H2SO4 HCl NaOH S 2. Which natural disaster actually increases biodiversity over the long term? fire air pollution water pollution habitat destruction 3.

What trend in ionization energy occurs across a period on the periodic table?

Most Bic lighters hold 5.0ml of liquified butane (density = 0.60 g/ml). Calculate the minimum size container you would need to "catch" all of the butane (from a lighter) at room conditions, if you released all of the butane from the lighter.

Describe how glacial erosion influenced the topography of Ohio.

Which of the answer choices lists a compound? h2, h2o, NaCl, or O2

What is earths water called

What volume of product is produced when 20.0 Mg of liquid hydrogen reacts with excess liquid oxygen in a rocket propellant reaction? Gas is formed 101.3 to 5 kPa and 40.0 °C

Where the use of energy is concerned (in scientific sense), when is work done?