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Periodicity 240 Element 'M' reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element 'M' is most likely:
NaBaSNAl
Use the collision theory to calculate the theoretical value of the second-order rate constant (in m3 mol-1 s-1) for the gas-phase reaction D2 + Br2 = 2 DBr at 450 K assuming that it is elementary bimolecular. The collision cross-section for this r..
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 251.0 Torr at 45.0 °C. Calculate the value of H°vap for this liquid. What is the original boiling point
For the elementary process N2O5 (g) = NO2(g) + NO3 (g) the activation energy (Ea) and overall Delta E are 154 KJ/mol, and 136 KJ/mol, respectively. What is the activation energy of the reverse reaction.
Describe how you would prepare 1liter of 0.2M solution of monobasic sodium phosphate and 1 liter of 0.2M dibasic sodium phospate ( FW for monobasic 137.99 and FW for anhydrous dibasic 141.96
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.06 , and the density of the crystal is 7.01. Calculate the molar mass (in g/mol) of the element
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
Calculate the solubility of silver chromate in 0.005 M Na2CrO4.
Explain why the extrapolated temperature is used to determine the maximum temperature of the mixture rather than the highest record temperature in the experiment.
What is the vapor pressure of the stored mixture?
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
Einstein reasoned that the absorbed photon must have the minimum energy required to dislodge an electron from the metal surface. This energy is called the work function () of that metal.
Calculate the [H+], pH, and pOH in each of the following solutions in which the hydroxide ion concentrations are A) 0.0068M B) 6.4 X 10^-5M C) 1.6 X 10^-8M D) 8.2 X 10^-12M
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