Get college assignment help at uniessay writers A sample containing 2.20 moles of neon gas has a volume of 8.00 L. Assume that the pressure and the temperature remain constant. What is the new volume of gas in liters when a sample of 70.0 g neon is added to the neon gas already in the container?
A mixture of 2.0 mol of H2 (g) and 1.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 25 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
what is the lewis dot structure for C2N2
1.664 g of a solid white acid are dissolved in water and completely neutralized by the addition of 45.37 mL of 0.580 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
Phenolphthalein in the acidic form (pH 10.0). It is a weak acid with a pKa of 8.7. The ratio of the conjugate base concentration to the acid concentration is .4. Determine what percent is in the acidic form when the acid color is first apparent?
Suppose that 27 of each of the following substances is initially at 29.0. What is the final temperature of each substance upon absorbing 2.45 of heat? substance: gold
number of dichlorinated products in c6h12cl2
3d structure of ch3ch2ch2oh
what is the 3d structure of ch3ch2ch2oh
A canister is filled with 380g of ice and 100. g of liquid water, both at 0 C. The canister is placed in an oven until all the H2O has boiled off and the canister is empty. How much energy in calories was absorbed?
Get college assignment help at uniessay writers An ice cube of mass 9.0 g is added to a cup of coffee. The coffee’s initial temperature is 90 C and the cup contains 120 g of liquid. Assume the specific heat capacity of the coffee is the same as that of water. The heat of fusion of ice (the heat associated with ice melting) is 6.0 kJ/mol. Find the temperature of the coffee after the ice melts.
“1)The ozonolysis (followed by hydrolysis) of an unsymmetrical and unbranched alkene forms: 2)How many distinct terminal alkynes exist with molecular formula C5H8? 3)Upon treatment with hot KMnO4 and acid, one mole of butene will yield? 4)Addition of 2 mol of HCl to 1-butyn would yield? 5)The product formed by the reaction of 3-methyl-1-butene with mercuric sulfate and sulfuric acid is? ”
Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a – i for your answers.
How many atoms are there in a face-centered cubic unit cell? 1. 4 2. 6 3. 10 4. 12 5. 8
Oxalic acid is a relatively strong diprotic acid with K1 = 5.3 × 10^−2 and K2 = 5.3 × 10^−5. What is the oxalate ion [C2O2−4 ] concentration in a 0.10 M oxalic acid solution? show all works 1. 5.3 × 10^−5 M 2. 5.3 × 10^−3 M 3. 0.10 M 4. 0.050 M 5. 0.073 M
When 2-propanol was used as the developing solvent, two substances moved with the solvent front (Rf = 1) during TLC analysis on a silica gel plate. Can you conclude that they are identical? If not, what additional experiment would you perform?
A sample of oxygen is collected in a 309 mL container over water at 15◦C, and the barometer reads 773 torr. What volume would the dry gas occupy at 724 torr and 15◦C? Water’s partial pressure at 15◦C is 12.8 torr. Answer in units of mL.
What is the volume of 0.2500 M Cobalt (III) sulfate is required to react completely with 5.00 g of sodium carbonate
Assuming pressure remains constant, calculate the final volume in each of the following cases A volume of 35.0 mL of gaseous hydrogen is heated from 20 °C to 120 °C; b) A volume of 15 L of air is chilled from 80 °C to -25 °C.
She weighed an empty 1.00-rm L bulb, then filled it with the gas at 1.10 rm atm and 23.0 ^circrm C and weighed it again. The difference in mass was 1.27 rm g. Identify the gas. Express your answer as a chemical formula.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 70.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 240.0 mL of solution. What is the molarity of the ethanol in this solution?
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