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30 g of carbon are burned in a closed container under conditions of low oxygen. 70 g of carbon oxide forms. How much oxygen does this meann the carbon combined with?
the 250-ml erlenmeyer flask has the mass of 78.639 grams. the mass of 250-ml erlenmeyer flask and water 327.039 grams.
Define fission and fusion. Describe both processes including the nuclear reactions for both prcesses.
How many moles of solid sodium fluoride should be added to 5.0 L of a saturated solution of barium fluoride, BaF2 , at 25 degrees Celsius to raise the fluoride concentration to 0.025 mol/L
How many ml of a 2M HCl are required to neutralize 200 ml of a 0.4 M solution of NaOH?
calculate the ph resulting from mixing 15.00 ml of 0.800 m hio3 pka 0.77 with 45.00 ml of 0.0200 m
Is the Br2 a gas, and what is the net ionic equation for this reaction?
When the three elements P, Cl, and As are arranged in order of increasing atomic radius, which is the correct order
The solubility of silver chromate, which has a Ksp equal to 9.0e-12 at 25 degrees celsius, is determined in water and in two different solutions. Predict the relative solubility of silver chromate in the three solutions
Show the change in oxidation number (give number of electrons gained or lost per atom: e.g., 3e- gained) in the following reactions:
A 26.7 mL sample of HCl solution of unknown concentration was diluted to 100mL. A 20.0 mL sample of the diluted solution was titrated against .879 M solution of Ba(OH)2. the titration required 15.2 mL. Calculate the molarity of the initial solutio..
prepare a standard of lidocaine in methanol with a final concentration of 1.00 mgml using the powder lidocainehcl. show
Calculate the sulfur hexafluoride partial pressure when a circuit breaker with this gas mixture reaches its rated limit of -40.0 degree celcius. How does the density of the gas in the circuit breaker change as the temperature drops
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