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a sample of gas occupoes 17ml at -112 degrees C. what volume does the sample occupy at 70 degrees C?
Calculate how many atoms of potassium A three mole sample of K2S would have and Calculate the current for diffusion-controlled electrolysis
A solution of salt (molar mass 90 g mol -1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass.
Determine how many kgs of Ca are there in a 205-pound man If 1.4 percent of the mass of a human body is calcium(Ca)?
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution.
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
An unknown mass of each of the given substances as with The final temperature is recorded as indicated 1.Pyrex glass (tf=67.6 C), 2.Sand (tf=70.4 C), 3.ethanol (tf=45.9 C), initially at 19.0 degrees celsius, absorbs 1930 Joules of heat
Which graduated cylinder would have the greatest volume change if equal masses of Au and Pt are transferred to equal volumes of H2O in separate graduated cylinders? Density of gold = 19.31 g/cm3 , density of platinum =21.43 g/cm3
How much heat energy, is needed to convert 64.0 grams of ice at -18.0 degrees celcius to H2O at the temperature of 25.0 degrees celcius? Express your answers in kilojoules
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
The percent by mass of bicarbonate (HCO3-) in a certain Alka-Seltzer product is 32.5 %. Calculate the volume of CO2 generated at 37ºC and 1.00 atm when a person ingests a 3.29g tablet.
A reverse osmosis plant desalinates 5x10^6 L/day of feedwater containing 1500mg/L of salts yielding 3x10^6 L/day of product water with 75 mg/L of salt. What would the salt concentration be in the brine?
Consider the following reaction: SO2Cl2 (g) SO2 (g) + Cl2 (g). K = 2.99*10^-7 at 227 degrees celsius. If a reaction mixture initially contains 0.159 , what is the equilibrium concentration.
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