An atom with 82 protons, 125 neutrons and 78 electrons will have a mass number of

If the gas in this flask is non reactive and monatomic which elements would it be

How many hours are between each high tide and low tide?

What conditions are important in determining if it will rain or snow?

1.) Consider the processes or reactions, indicate which side of the reaction will have the greatest entropy AND explain why. (4 pts) a. CO2 (s) CO2 (g) b. CaCO3 (s) - ) Cao (s) + CO2 (g) c. 2 NO2 (g) - > N204 (g) d. H20 (1) at 25 °C heated to 52 °C

The four isotopes of lead are shown below, each with its percent by mass abundance and the composition of its nucleus. using these data, calculate the approximate atomic mass of lead.

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

When gold is melted and formed in a mold to make a piece of jewelry, what type of change is taking place?