Caculate the mass of oxygen needed to burn 175.0grams of octane

The strength of an electric field depends on the

In preparing students to write a chemical equation we often use analogies. Let's write an equation for the construction of a car with just 2 door. We'll use doors, body, interior, tires how to write it?

Which is true according to the law of conservation of energy?

How does Bohr's atomic model build on Rutherford's model?

The molar mass of lif is 25.94 g/mol. how many moles of lif are present in 10.37 g?

What happens when the electron moves from the first energy level to the second energy level? Energy is absorbed, and an emission line is produced. Energy is released, and an emission line is produced. Energy is absorbed by the atom.

Calculate how many mg is lethal to resident Arnold who weighs 45 kg and resident Harold who weighs 96 kg. The LD50 of lead is 450 mg/kg

The specific heat of aluminum is 0.125 cal/g °C. If 12.5 grams of aluminum were heated from 20.0 °C to 100.0 °C, calories of heat energy would be absorbed by the aluminum.

What type of radioactive decay results in uranium-238 becoming thorium-234?

What is the differnce between a stimlus and a response