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A 50.0g silver object and a 45.0 g gold object are both added to a 55.5 mL of water contained in a graduate cylinder. what is the new water level in the cylinder. Density of silver = 10.5 g/mL, density of gold = 19.3 g/mL
derive the rate equation in terms of [NO] and [O2] as well as k ( Assume N2O2 to be in a steady state )
In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm.
Calculate what quantity of potassium chlorate that has molecular weight of 122.5 needed to form 33.6 litres of oxygen? Express your answer in grams and assume that temperature and pressue will be in normal condition?
Consider an area-source box model for air pollution above a peninsula of land. the length of the box is 15 km, its width is 80 km, and a radiation inversion restricts mixing to 15 m.
Sulfur-38 has an atomic mass of 38.0 and a half-life of 2.87 hours. How long will it take for 99.99% of a sample of sulfur-38 to decay.
The density of palladium(Pd) is 12.0 g/mL at 20 degree Celsius temperature and the density is 11.0 g/mL 1550 degree Celsius temperature . What is the change in volume (V) if tempreture raises of 4.21 kg Pd from 20°C to 1550°C.
If 30mL of 6.8M H2SO4 was spilled , what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid.
Properties of subatomic particles - Fill in the missing relative masses and relative charges for each of the subatomic particles
Considering the given equation HCl + X 3 (PO4) 2 = H 3 PO 4 * XCl 2 it is given that when a particular metal A reacts with hydrochloric acid
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Compute the mass of an electron if the difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 grams?
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
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