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Lottery Number Generator
Design a program that generates a 7-digit lottery number. The program should have an Integer array with 7 elements. Should have a loop that steps through the array, randomly generating a number in the range of 0 through 9 for each element. Then another loop that displays the contents of the array.
Gold can be hammered into decorative gold leaf, which is only 10-7 m thick. If 1.576 troy ounce of gold is hammered into gold leaf, what is the area that can be covered when used for decoration. 1 troy ounce = 31.1 g, and the density of gold is 19..
Question- Write a balance (a) formula unit, (b) total ionic and (c) net ionic equations for the reaction of sodium acetate (NaCH3COO) with sulfuric acid
Question- Two successive reactions, A B and B C, have yields of 86% and 68%, respectively. What is the overall percent yield for conversion of A to C
potassium hydroxide to a 250 mL volumetric flask. What is the concentration of potassium hydroxide in moles per liter?
Determine ΔHvap for a compound that has a measured vapor pressure 24.3 torr at 273 K and 135 torr at 325 K: 1. 34 kJ/mol, 2. 13 kJ/mol, 3. 24 kJ/mol, 4. 79 kJ/mol, 5. 41 kJ/mol
a 17.5 g mass of ice at 273k is added to 125g of h2ol at 325k at constant pressure. is the final state of the system
The figure below is a heat curve for an unknown outerspace substance discovered by the Mars rover. By understanding the heat curve, scientists can make inferences about the composition of the planet. What is the temperature of fusion, Tfusion, and va..
Question- The pKa of phenolphthalein is 9.3 at room temperature. 1) Calculate the ratio of ion to acid at a pH of 8.2 and 10.
What type of adducts are formed when proteins react with pyridoxine (vitamin B6) and what are the consequences in foods?
acid is dissolved in water to produce a 1.51 M solution. The pH of the resulting solution is 2.52. Calculate the Ka for the acid.
You have a solution of a buffer with 10 mMoles of the buffer. Initially the solution has a pH of 6.8. You add 100 mM kOH and the pH rises to 7.1. The pKa of the buffer is 6.3.
A galvanic cell is produced as follows: Left half-cell has a Pt wire dipping into a beaker containing an equimolar mixture of Cr+2 and Cr+3 . [Cr3+ + e-??Cr+2 E°-= -0.42 V] Right hand cell has a Tl rod immersed in 1.00 M TlClO4.
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