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Jane wants to make an acid. She has two possible compounds she could add to 250.0 g of water to make this acid - EITHER 234.5 g of calcium oxide OR 678.9 g of tetraphosphorus decaoxide (she won't use both, just one).
a. Which compound should she use? Explain your answer (with words and full sentences), and write any balanced chemical reactions that would help you justify your claim.
b. What is the chemical formula of the acid, and what is the maximum mass of the acid she could theoretically produce when she does this reaction?
c. What is the EXCESS reactant, and how many grams of this reactant are leftover when the reaction is completed?
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
A student prepares a buffer by dissolving solid sodium acetate, NaCH3COO, in a solution of acetic acid, CH3COOH. Write the net ionic equation for the buffer system.
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated? Co(NO3)2 +K2S ---> CoS + 2KNO3
Because the potential of pH electrodes can vary, it is necessary to CALIBRATE a pH electrode before use. For many uses, a two-point calibration procedure is appropriate.
Calculate the number of silver atoms in a single silver nanoprism with the shape of an equilateral triangle with an edge length of 40 nm and a thickness of 5 nm.
A system expands from 1.00 L to 2.00 L against a constant external pressure of 1.00 atm. What is the work (w) done by the system in J
What is the partial pressure in atm of N2 of ths mixture if it is held in 12.60-L vessel at 15 degrees celcius. What is the partial pressure in atm of H2 of this mixture if it is held in a 12.60 -L vesssel at 15 degrees celcius
Based on polarity, which compound do you expect to have a larger Rf value in a soluvent of medum polarity
Presuming no calorie intake from water or minerals, if a 100.-gram steak contains 49% water, 15% protein, 0% carbohydrate, and 36% fat define what is the estimated gross energy content of steak in Calories
Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
Problem- You work in a small-scale manufacturing facility that uses acetophenone as the starting material for a multi-step synthesis. Your company buys ~98% pure acetophenone from a major manufacturer and purifies it in-house prior to its use in t..
the 20 ml of water added to the erlenmeyer flask is to be previously boiled deionized water. Since water does absorb CO2 from the atmosphere and since CO2 dissolved in the water causes it to be slightly acidic
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