What is the temperature of 68.4g of helium gas with a volume of 456ml and a pressure of 987mmHg?

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!