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The formula for caluculating a dilution of a solution is M1V1=M2V2, use this equation to calculate the volume of a 2.0 M solution of sodium carbonate required to make 100mL of a 0.25 M solution. A1) calculate the mass of calium chloride dihydrate needed to make 250.0-mL of a 1.25 M solution
A. Epinephrine, C9H13NO3, has a concentration of 10-10 M in circulating blood. Calculate the diameter of a round swimming pool with a water depth of 2.0 M that would be needed to dissolve 1.0 g (about a teaspoon) of epinephrine.
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION.
When the gases diydrogen sulfide and oxygen react, they form the gases sulfur dioxide and water vapor. A: Express the answer as a chemical equation. Identify all of the phases in the answer. Balance the equation
For a protein w/ a molar mass of 1x10 6 u, calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C
barium acetate + iron (II) sulfate a) molecular equation; b) net ionic equation: 3. magnesium hydroxide + chloric acid a) molecular equation: b) net ionic equation:
Aqueous hydrochloric acid reacts with zinc metal to yield hydrogen gas and aqueous zinc chloride. Write a net ionic equation for the process: 2 HCl(aq) + Zn(s) ? H2(g) + ZnCl2(aq)
How many grams of alum can be obtained from 20.0 g of aluminum when the reaction proceeds with 100% yield? How many grams of alum would be obtained if the reaction were to proceed with 80.0% yield
At 2000C Kc is 2.4^3 for 2NO N2+O2, the initial concentration of NO is .170M what is the equilibrium concentration of NO?
Outline a complet mechanistic sequence for the reaction of 2-bromoheptane with potassium 2-methyl-2-propoxide in 2-methyly-2-propanol solvent to form the three alkenes generated in the reaction
what is the purpose of placing a lead apron on a person who is receiving routine dental X-rays? d)why are the walls in a radiation lab built of thick concrete blocks
How many milliliters of 0.200 M NaOH would be neutralized by the HCl produced after 60 minutes? After 90 minutes? After 120 minutes?
The enthalpy change for the reaction of 50.0ml of ethylene with 50.0ml of H2 at 1.5atm pressure (problem ^H= -0.31kj. What is the value of ^E
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