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A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the general formula CnH2n+2. What is the molecular formula of the gas in this sample? (R = 0.08206 L×atm/K×mol)?
A multiple stage evaporate process concentrates a weak solution of LiOH from 4.48 wt% to 26.78wt%. This evaporator processes 10 metric tonnes of solution each day.
One method of estimating the temperature of the center of the sun is based on the assumption that the center consists of gases that have an average molar mass of 2.00 g/mol.
What is the difference between a strong acid and a weak acid. Calculate [H30+] in each aqueous solution at 25 C and classify each solution as acidic or basic one.
How much PV work is done if 88.0 grams of C 2H 4 ethylene and 120 grams of hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change = -70.3 Litres?
Determine what volume of .1 M HBr is required to neutralize 50 ml of .140 M Barium hydroxide and determine the normality of a solution consisting of 10.51 mg of NaOH in 591 mL of solution
BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5 B , which preferentially concentrates in tumor cells.
On average, cow milk is 4.7%(w/w) lactose. The molecular weight of this disaccharide is 342.3g C12H22011. Assuming milk has the density of water.
A gas sample containing N2 and O2 was found to contain 72% N2. If the pressure of the sample was 2.0 atm, what is the partial pressure of O2?
An unknown mass of each of the given substances 1.Sand (tf=70.4 C),2.Pyrex glass(tf=67.6 C),3.water(tf=55.9 C) ,4.ethanol (tf=45.9 C), initially at 19.0 degrees Celsius, absorbs 1930 Joules of heat. Find out the mass of each substance.
NiCl2(aq)+ 2NaOH(aq)---> Ni(OH)2(s)+ 2NaCl(aq) how many grams of Ni(OH)2 are produced from the reaction of 35.0 mL of a 1.75M NaOH solution and excess of NiCl2.
At 0°C, the volume coefficient of expansion of mercury is α = 18×10-5 K-1, and its coefficient of compressibility is β = 5.32×10-6 bar-1.
Determine osmolarity of solution when 25.0 grams of aluminum chloride dissolves in 2.50 liters of H2O.
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