Calculate the gas constant, R, if 25.55 mL of hydrogen gas was collected at a barometric pressure of 0.987 atm and a temperature of 295 K. The vapor pressure of water at this temperature is 0.026 atm.

A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (pcl3). if it is the only product, what mass of pcl3 is formed?

Convert 0.0052 meters to millimeters. 0.52 millimeters 0.0000052 millimeters 5.2 millimeters 52 millimeters

How does a galvanometer use a magnetic field to indicate the strength of an electric current?

Which conclusion was drawn from the results ofthe gold foil experiment? (1) an atom is electrically neutral. (2) an atom is mostly empty space. (3) the nucleus of an atom is negativelycharged.

The complete combustion of which of the following substances produces carbon dioxide and water

How many neutrons are in 7.00 g of 13c?

This chart shows discrpitions of the atoms for four different substances. Which substance is a solid

What is habitat destruction?

Nancy wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. She has soil, a long pan, and a pile of books with which to build a model hillside. She has a watering can to model rainfall.

What is the function of the ribosome