The mass of a 50-mL volumetric flask is 40.638

g. After adding 15.0 mL of 95% ethanol and filling to the calibration mark with water, the flask weighed 88.219

g. What is the density of the mixture?

Which statement best describes how chemical equations demonstrate conservation of mass? A. The number of reactants is the same as the number of products. B. The compounds are the same on each side of the reaction. C.

2 mg + 02-> 2Mg0 reaction type?

The specific heat of wood is 2.03 (J/gºC). How much heat is needed to convert 550 grams of wood at 15°C down to 10 °C?

The reason octane, c8h18, is a liquid at room temperature, while methane, ch4, is a gas at the same temperature, is because:

How many moles of Ag will be produced from 46.0 g of Cu, assuming AgNO3 is available in excess?

In which atmosphere layer does 80% of the gas in the atmosphere reside

When oxygen (O) reacts with iron (Fe), it produces rust (Fe2O3). In a closed system, how much oxygen must react with 120 grams of iron to produce 580 grams of rust?

How many molecules of CaCL2 are equivalent to 75.9g CaCl2

What is represented in an electron dot diagram

In a first order reaction, what fraction of the reactant will remain after 4 half-lives?