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What is the total pressure of a mixture of gases containing 1.5 L of O2 gas with a pressure of 0.50 atm, 1.0 L of N2 gas with a pressure of 0.30 atm, and 1.0 L of Ar gas with a pressure of 0.40 atm?
A chemist studying the properties of photo- graphic emulsions needed to prepare 500 mL of 0.18 M AgNO3 (aq). What mass of silver nitrate must be placed into a 500 mL volumetric ?ask, dissolved, and diluted to the mark with water? Answer in units o..
What statement below best describes the graph representing the integrated 1st order rate law plot of ln[a] vs t having a straight line negative slope equal to -k
What is the volume occupied by one mole of helium at 0°C and 1 atm pressure?
What is the pH of a solution obtained by mixing 50mL of 0.02 M sodium acetate with 40mL of 0.01 M HCl.
In what order would the subsequent proteins be eluted from DEAE cellulose anion exchanger by a rising salt gradient: cytochrome c (pI, 10.6), pepsinogen (pI, 1.0) and myoglobin (pI, 6.8)
4Fe + 3O2 --> 2Fe2O3. If 5.0 Moles of oxygen O2 react, how many moles of Fe2O3 will form
To determine the concentration of a solution of lactic acid a chemist titrates a 20.50 mL sample of it with 0.1010 M NaOH and finds that 10.76 mL of titrant are required to reach the equivalence point. What is the concentration of the lactic acid ..
Problem- What mass of ammonium chloride must be added to 250. mL of water to give a solution with pH = 4.85?
A 300.0-mL saturated solution of gold (II) phosphate, contains 0.31 grams of dissolved salt. a. Write an equilibrium expression for the solubility product constant.
Use MO theory to predict the net bond order after N2 interacts with a photon that results in the promotion of an electron from bonding to an antibonding orbital
What mass of calcium can be produced by this process if a current of 6200 {\rm A} is applied for 35 {\rm h}? Assume that the electrolytic cell is 69 % efficient. also What is the minimum voltage needed to cause the electrolysis
1. nitric oxide is made from the oxidation of ammonia. what mass of nitric oxide can be made from the reaction of 8.00
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