B2O3 (s) + 3C (s) + 3Cl2 (g) - - - > 2 BCl3 (g) + 3CO (g) How many moles of chlorine are used up in a reaction that produced 0.35 kg of BCl3?

An unknown solution has a pH of 7. how would you classify this solution? A. neutral B. acidic C. basic D. not enough information

According to Hund's rule, what's the expected magnetic behavior of vanadium (V) ? A. Non-magnetic B. Ferromagnetic C. paramagnetic D. Diamagnetic

The concentration of gallium in silicon is 5.0 * 10-7 at%. What is the concentration in kilograms of gallium per cubic meter?

Explain why it is important to warm up the solution after dissolving the antacid tablet?

What is the change in heat energy when 132g of copper at 32.2°C is raised to 45.0oC? The specific heat of copper is 0.385 J/g °C.

How many moles of H2O are there in1.0g of H20?

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener? What changes occur at the molecular level when ice cream melts and forms a liquid?

a gas has a volume of 6 liters and a pressure of 1.5 atm. if the container is compressed to a volume of 2 liters, what will the pressure of the gas be?

When metals react with nonmetals, an ionic compound generally results. what is the predicted general formula?

Why could the Bohr model not predict line spectra for atoms other than hydrogen?