For these expressions, energies are expressed in electron volts (ev) per na+–cl– pair, and r is the distance in nanometers (nm). the net energy en is just the sum of the preceding two expressions. (a) superimpose on a single plot en, er, and ea versus r up to 1.0 nm. (b) on the basis of […]
Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.
A solution is prepared as described in part a using solid cacl2⋅2h2o and de-ionized water.mass of weighing bottle and solid before transfer: 36.683 g mass of weighing bottle and solid after transfer: 29.746 g size of volumetric flask: 400.00 ml what is the concentration of this calcium chloride solution in g/l? [note that the mass […]
A 0.610 m aqueous solution of kbr has a total mass of 61.0 g. what masses of solute and solvent are present?
Two ideal gases have the same mass density and the same absolute pressure. one of the gases is helium (he), and its temperature is 181 k. the other gas is neon (ne). what is the temperature of the neon?
The boiling point of an aqueous solution is 102.30 °c. what is the freezing point? constants can be found here.
If you know the half-life of a radioactive isotope that occurs in an igneous rock, what must you measure to determine the age of the rock?
How long would it take to obtain a carbon concentration of 0.75 wt% at a position 0.5 mm below the surface if the heat treatment were conducted at 725 ∘c ?
NEED HELP PLEASE I AM GOING TO FAIL A chemical reaction has an increase in entropy and a decrease in enthalpy. What is known about the spontaneity of the reaction? spontaneous at high temperatures, nonspontaneous at low temperatures nonspontaneous at high and low temperatures spontaneous at low temperatures, nonspontaneous at high temperatures spontaneous at high […]
PLEASE HELP 22 POINTS How does heat differ from temperature? Temperature is the measure of heat. Temperature and heat are the same thing. Temperature measures thermal energy, and heat is the flow of thermal energy. Temperature measures the loss of energy, and heat measures the gain of energy.
