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The rate at which a compound travels through a particular GC system depends on numerous factors. List the five factors and number them one through five.
when atoms lose more than one electron, the ionization energy to remove the second electron is always more than the ionization energy to remove the first.
calculate the PH of a solution made by adding 5.00gram of sodium hydride,NaH,to enough water to make 0.900 litre of solution?
A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
what is the grams of 9.31 x 10^24 molecules of methanol (CH3OH)? combining 0.357 mol of Fe2O3 with excess carbon produced 19.2g of Fe ; Fe2O3 + 3C ---> 2Fe + 3CO what is the actual yield of iron?
A 40.0 mg sample of a protein is dissolved in water to make 25.0 mL of solution. The osmotic pressure of the solution is 0.56 torr at 25°C. What is the molar mass of the protein?
What is the specific heat capacity (in SI unit) of the following.
The sum of the substituent positions do not add up to lowest possible number. -The double bond in the ring does not contain the number one carbon. -Molecule has no cis-trans isomers. -The wrong name for the benzene derivative is used
Write the condensed structure of the primary alcohol (RCH2-OH type) with the general formula C4H10O.
1-Complete the following reaction: Pb-210 decays by emission to form what new necleus? Write the complete nuclear equation.
In the process of isolating iron from its ores, carbon monoxide reacts with iron (III) oxide, as described by the equation
An aqueous solution of KI has a freezing point of -1.70 C and an osmotic pressure of 26.5 atm at 25.0 C. What is the density ?
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