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Lithium has two stable isotopes with masses of 6.01512 u and7.01600 u. The average molar mass of Li is 6.941 u. Explain what is the percent abundance of each isotope
Explain what is the heat released during reaction. Also what is the enthalpy of neutralization. Does doubling the volumes of acid and base double the amount of heat. Does doubling the concentration of acid base double the amount of heat released
Write net ionic equations for the reactions that take place when aqueous solutions of the following substances are mixed.
what is the diffrence between anatomical theory of diease, humoral concept of diease, and germ diease.
A reaction has an activation energy of 32 kj/mol. If the temperature of the reaction doubles from 45 to 90 degrees by what factor will the ratio of the rate constants, k2/k1,change
A 2.0 L glass soda bottle filled with air is tightly capped 18degC and 686mmHg. If the bottle is placed water at 95degC, what is the pressure in the bottle
How many mL of 0.50 M acetic acid must be added to 20 mL of 0.20 M sodium acetate to yield a buffer of pH = 4.00
The molar volume of a certain form of solid lead is 18 cm^3/mol. Assuming cubic closest packed structure, determine the following:
what tempreture must 0.040 moles of water vapor be heated in a 500ml flask before the pressure in the flask becomes 2 atm.
When X amount of moles of glucose are dissolved in 5.60 x 101 mL of solution, the Molarity is 3.47 M. What is X
A proton in a magnetic field has two spin states
hydrogen from the decomposition of water has been promoted as the fuel of the future. what mass of water in kilograms
50.0 mL of 1.0 M HCl at 25.0 oC were mixed with 50.0 mL of 1.0 M NaOH also at 25.0 oC in a styrofoam cup calorimeter. After the mixing process, the thermometer reading was at 31.9 oC.
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