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A 375 mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286 mL and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three significant figures in °C)?
when nitrogen gas reacts with hydrogen gas ammonia gas is formed. how many grams of hydrogen gas are required to react
Consider the combustion reaction between 30.0mL of liquid methanol ( density = 0.850 g/mL) and 15.0L of oxygen gas measured at STP. The products of the reaction are CO2 and H2O
Glycophorin A is a 131 residue integral membrane protein that contains a single transmembrane alpha helix. If the lipid bilayer has a thickness of 30 A, calculate the number of residues of an alpha helix
Consider following cell. SCE stands for the saturated calomel reference electrode, which has a fixed potential of 0.244 volt. Pt|VOSO4 (0.0824 M), V2(SO4)3 (0.395 M), HClO4 (0.0100 M) || SCE Calculate the cell potential.
Calculate the pH of the solution made by adding 0.50 mol of HObr in 0.30 mol of KOBr to 1.00 L of water. The value of Ka for HObr is 2.0 * 10^-9
Draw the conj acid of this base and use its structure to explain why it is so basic (resonance forms may help). The pKa of the conj acid is about 26. What is the pKb of the free base?
how much water would they have consumed? How many kJ would be required to bring it to body temperature? (We noted in class that the amount of heat necessary to melt snow is 6.01 kJ/mol)
Background: a 5.0 ml sample of a protein is in a solution of 0.5 M NaCl. This solution is placed in dialysis tubing to remove as much NaCl as possible. In theory, the final concentration of NaCl should be the same inside as outside of the dialusis..
The two products formed are 2-methyl-1-hexene (19%) and 2-methyl-2-hexene (81%). Show the chemical equation for this reaction. Explain fully why 2-methyl-2-hexene is the major product.
If 156 mL of wet H2 is collected over water at 24C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
The reaction between bromate ions and bromide ions is acidic solutions is given by the following equation BrO3-(aq) + 5Br-(aq) + 6H+(aq) -> 3Br2(l) + 3H2O(l)
In an experiment to analyze mixture of sodium carbonate, sodium bicarbonate, and an inert component. 10.00ml of 0.100M HCl were used to titrate 0.300g of the sample using phenolphthalein as the indicator. Calculate the number of moles and the mass..
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