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The 0.200g of a compound containing C,H and O was combusted as well as produced 0.2998g of CO2 and 0.0819g of H2O. If the molecular mass of the compound was find out to be 176.30, explain what is the molecular formula for the compound?
calculate the percent yield based upon the amount of maleic anhydride used. use the molecular weight of one repeating monomer unit for the weight of the product.
An electrical heater is used to supply 145.0 J of energy to a 15.0 g sample of water, originally at 300.0 K. Determine the final temperature in degrees Kelvin. (the specific heat capacity for water is 75.291 Jmol-1K-1)
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. B. As a result of this poor titration technique, is the reported number of moles of B4O5(OH)4^2 would be too ..
When a 60.0 g sample of a metal at 100.0oC is added to 45.0 g of water at 22.00 oC, the final temperature of both the water and metal is 32.81 oC. The specific heat of water is 4.184 J/g·K. What is the specific heat of the metal
calculate the number of moles in 75.0g of lead(II) perchlorate trihydrate, Pb(ClO4)2 * 3H2O
Part A - What volume of 2.25M HCl in liters is needed to react completely (with nothing left over) with 0.250L of 0.300M Na2CO3. Express your answer numerically in liters.
A 29.0-g sample of water at 290. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Compound A reacts with water to give dimethylmalonic acid and with methanol to give the monomethyl ester of the same acid. (Compound A was unknown until its preparation in 1978 by chemists at the University of California, San Diego.)
Does solubility change with pH? If yes, what is the highest solubility for the following. ( pH=7, pH=6, pH=4) (In other words are the following compounds more soluble in neutral, basic or acidic solutions?) a) NaBr b) Ca(OH)2 c) CaBr2
Decomposition of nitric acid NO to N2 and O2 is second order with a rate constant of 0.0796 M-1 s-1 at 737 degrees C and 0.0815 M-1 s-1 at 947 degrees C. Calculate the activation energy.
Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4-trimethylpentane, which has the structural formula shown in the figure.
what volume of a 0.37 M Mg(NO3)2 solution contains 87g of Mg(NO3)2.
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