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Write the balanced equations for bothof the following reactions and identify the type of reaction for each:
Potassium metal reacts with oxygen gas O² to form solid potassium oxide
Carbon monoxide gas and oxygen gas O² combine to form carbon dioxide gas
Are necessary to completely neutralize a solution in which 60.0g of NaOH have been dissolved
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 535 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
There are two naturally occurring isotopes of bromine. 79Br has a mass of 78.9183 amu. 81Br has a mass of 80.9163 amu.
Use resonance forms to show the delocalization (over four carbon atoms) of the negative charge of the benzyl and anion
A sample of ammonia gas (NH3) is completley decomposed to nitrogen gas and hyrdogen gas. If the total pressure at the end of the reaction in 866mmHg
Tell what type of chemical reaction is represented by the following chemical equation.
The element gallium has 2 isotopes with the masses and natural abundances shown in the table. Mass of Isotope Natural abundance 68.9257 60 70.9249 40 What is the average atomic mass of gallium
Alloxanic acid(C4H4N2O5,6.40g,),sodium alloxanate(5.46g) were dissolved in 250.0mL of water. Calculate moles of alloxanic acid dissolved.
What is the height of the column that contains a solution of Sucrose (C12H22O11) with 21% weight percentage of Sucrose?
What is the enthalpy change for each of the following reactions- 1. Ag+ (aq) + Li(s) -->Ag(s) +Li+(aq) 2. Fe(s) + 2Na+(aq) --> Fe2+(aq) + 2Na(s) 3. 2K(s) + 2H2O(l) --> 2KOH(aq) + H2(g)
Calculate the pH of a formic acid solution that contains 1.39% formic acid by mass. (Assume a density of 1.01 for the solution.)
An acetate acetic acid buffer has a pH = 5.00, containing 0.100 M NaOAc. Calculate the pH of the solution after adding 10 mL of 0.10 M NaOH to 100 mL of this buffer.
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