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3500 J of energy are added to an unknown mass of water. The temperature changes 15°C. What was the mass of the water?
what is the number of grams of C02 produced if you combust 0.50 ole of Ch4 according to the following balanced equation.
After you have added 1 N HCl to adjust the pH of the Tris solution to 8.1, what is the ratio (in mmols) of Tris to Tris-HCl in the resulting buffer solution
the initial pH value was2.5. You found that pH=pKa=4.2 when 12.50 mL of NaOH hadbeen added. The concentration of the sodium hydroxide was 0.500M. Calculate the molar mass of the acid
what is the volume of 340. ml of a sample of gas at 55.0degc and 740. mm hg if the conditions are adjusted to stp?
The solubility product constant for Ce(IO3)3 is 3.2 *10 ^-10, What is the Ce3+ concentration in a solution prepared by mixing 50.0 mL of 0.250 M Ce 3+ with 50.0 mL of 0.040 M IO3^-?
The interplay between federal and state governments is an important component of U.S. democracy and is governed by principles laid down in the Constitution.
Consider air to be a mixture of 80% nitrogen and 20% oxygen.How much work is required to raise the temperature of 6 mol of air by 3 °C in an adiabatic process?
If the thiosulfate reacts with a dichromate solution 0.049mg K2Cr2O7 / mL, What is the concentration of Se in the soil in parts per million?
This question is about Qualitative Analysis of Alkyl Halides, Alkenes, Dienes and Alkynes experiment.
calcuate the number of moles of HCI and of NaOH present when mixing 50.0mL
How much will she have in her account at the time of the last deposit if the account pays 8%/a compounded semiannually?
In a controlled greenhouse at 30.0C and 1.0 atm a crop of seeding tomato plants was found to consume 380 L of carbon dioxide gas during photosynthesis. Assuming 100% yield what a mass of glucose was produced for the growing plants?
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