Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The sodium bromide reacts to give bromine, a red-brown liquid, and sodium chloride. A solution was made by dissolving 19.8 g of sodium bromide in100.0 g of water when chlorine gas is bubbled into a
The iodine has an atomic mass of 126.9045 in naturally occurring. A sample of iodine is having12.2849-g accidentally contaminated with 1.00070g of ^129I, a synthetic radioisotope of iodine used in t
Determine the formula of an oxide of carbon in which the ratio by mass of oxygen to carbon is 2.00:1.00. The ratio of oxygen to carbon in carbon monoxide by mass is 1.33:1.00.
Based on molecule interactions demonstrating how the total could be different from the sum of the partial pressures, the pressure upon mixing two real gases.
Determine the work performed by the fiber. Suppose the muscle fiber obeys Hooke's law F = -kx with a force constant, K of 800 Nm-1 A muscle fiber contracts by 2.0 cm and in doing so lifts a weight.
A student weighed an unknown acid sample by difference and found its mass to be 0.3064g. The uncertainty in each reading made on the balance he used was ±0.0003 g. Determine the percent unce
Impure acetanilide was dissolved then cooled on ice and crystallize and the Crystals were filtered with Hirsch funnel. During the filtration explain why should a small volume be used for rinsing the
The 0.500liters of air a typical diver inhales per breath and carries a 20.-L breathing tank having air at a pressure of 300.bar. The pressure increases by 1 bar for every 10.08 m as she dives deepe
Assume that you calculated the product PV of 1 mol of a dilute gas and found that PV=27.54L atm at 0.00C and 37.32L atm at 100C.
At 29.0°C the Helium is collected over water 1.00 atm total pressures. Determine the total volume of gas must be collected to get the .542 g of helium, at 25°C the vapor pressure of
For a perfect gas of molar mass M, Deduce the relation among the pressure and mass density. Confirm graphically, using the following data on diethyl ether at 25 degrees that perfect behavior is reac
When the O2(g) was dried water vapor removed, the gas has a volume of 1.93 L at 25°C and 785 torr. A 2.01 L sample of O2(g) was collected overwater at a total pressure of 785 torr and 25°C. Ex
HCHO2 ( Formic acid), is generated by some ants and it is an organic compound and is released when they bite. Compute the ionization constant Ka of formic acid given that ionizes 4.2
On a new Jekyll temperature at 17 j and boils at 97j the scale water freezes. On another new temperature at 0 H and boils at 120H scale the Hyde scale, water freezes, Determine the boiling point on
A pharmaceutical drug, Lipitor that has been shown to lower "bad" cholesterol levels while raising the"good" cholesterol levels in the patients taking the drug, had over $11 billion in sales in 2006
A gas sample is a mixture of butane and ethane. A bulb having 215.0 cm3 capacities to a pressure of 108.5 x103 Pa is filled with the gas at 19.2 degrees Celsius.
Explain how you would go about finding the number of "chalk molecules "it takes to write your name on the board?
In a titration the following data were collected. A 10. mL portion of an unknown monophonic acid solution was titrated with the 1.0 M NaOH; 40.mL of the base were needed to neutralize the samp
Calculate if the heat of solution is endothermic and exothermic from the magnitude of the lattice energy and the hydration energy and vice versa and define the difference among the hydration energy
Determine how are Elements and compounds, protons, electrons, , Neutrons, mass number and Atomic number, radioactive and the Isotopes are related under the structure and the bonding sub topics? &n
If Epsom salt, MgSO4, H2O, is heated to 250degrees C, all the water of hydration is lost.0.824g of MgSO4remains, on heating a 1.687-g sample of the hydrate. Determine how many molecules of wat
Ascorbic acid, Vitamin C is a water-soluble vitamin. At 55 C a solution having the 80.5 g of ascorbic acid dissolved in the 210 g of water has a density of 1.22 g/ml.
With a volume of 59.7ml a metal slug weighing 25.17g is added to a flask. It is found that to fill the glass the 43.7g of methanol (d=0.791g/ml) must be added to the metal. Discuss the
At 20oC the solubility of barium hydroxide in water is1.85g/100g water and the solution is made up in 35.0g of water of 256mg. Explain, Is the solution saturated? If not, determine the number of ba
Determine the binding energy of the nucleus of56Fe, given that the proton mass = 1.00728 amu, the isotopic mass is 55.92068 amu and the neutron mass= 1.00866 amu. Answer in joules to two sig figs.