25.00 ml of heavy water at 20 degrees celcius was pipetted into a 37.234 g beaker. The final mass of the beaker was 64.859 g. What was the density of the water at 20 degrees celcius?

What will happen to the gas pressure as the temperature increases, if the amount and volume of the gas are kept constant?

The Bohr model of the atom explained why emission spectra are discrete. It could also be used to explain the photoelectric effect.

What is the number of orbital's in a d sublevel

How could you verify that you produced carbon dioxide in your combustion reaction? 2. what indication did you have that nh3 was produced in your decomposition reaction?

Only an unbalanced force will change an objects

Eq-43 which type of fire extinguisher should be onboard a vessel with a permanently installed fuel tank

5. Identify a suitable method that would be used to separate mixture of the follow [b]Water and ethanol c]Table salt dissolved in water d] iodine and potassium Pul the table below

How much energy is needed to convert 57.3 grams of ice at 0.00°c to water at 75.0°c? specific heat (ice) = 2.10 j/g°c specific heat (water) = 4.18 j/g°c heat of fusion = 333 j/g heat of vaporization = 2258 j/g?

A certain first-order reaction (A→productsA→products) has a rate constant of 9.90*10-3 s-1s-1 at 45 ∘C∘C. How many minutes does it take for the concentration of the reactant, [A][A], to drop to 6.

Assign the oxidation number for (NH4) 3PO4