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Briefly explain how the calculated molar mass of HCL would be affected if the HCL-saturated cotton ball were placed in the tube the NH3-satureted cotton ball
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.4x10^15Hz
Gas A has a density of 0.20 g L, and gas B has a density of 0.80gL, both at the same specific temperature and prassure. Which gas diffuse faster
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
A method for determining the quantity of dissolved oxygen in natural waters requires a series of redox reactions. Balance the following chemical equations in that series under the conditions indicat
The vapor pressure of liquid Nickel at 1606° C is 0.100 torr, whereas at 1805° C, its vapor pressure is 1.000 torr. At what temperature does the liquid have a vapor pressure of 2.500 torr
Complete and balance the following neutralization reaction, name the products, and write the net ionic equation.
Given the following equation, how many grams of PbCO3 will dissolve when 5.0 L of 1.50 M H+ is added to 6.00 g of PbCO3
Write a net ionic equation accounting for this. For the reaction in part a, write the equilibrium constant expression and calculate the equilibrium constant from a consideration of Kb and Kw.
When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type. Na2S2O3 + I2 ? NaI + Na2S4O6
Under what conditions would all three hydrogens be removed from H3PO4. I think it would need a strong base and high molarity.
Assuming that the reaction occurs at constant pressure, how much heat is released. substance - heat of formation kJ/mol C(s)- 718.4 CF4 (g)- (-679.9) CH4 (g)- (-74.8) H (g)- 217.94 HF (g)- (-268.61)
How many moles of O2 are required for the complete reaction of 43.5 g of C2H4 to form CO2 and H2O
An athlete wants to acquire red blood cells from a donor with the same blood type. Taking into consideration that blood is composed of three components, plama, red blood cells, and leukocytes. what
How many grams of can be produced from 3.15 of. Express your answer numerically in grams.
How many milliliters of a stock solution of 6.0 M of HNO3 would you have to use to prepare 110 mL of 0.500 M HNO3? If you dilute 10.0 mL of the stock solution to a final volume of 0.250 L, what will
A newly isolated protein was found to contain 0.493% histidine upon amino acid analysis. What is the minimum molecular weight for the protein (assuming only one His residue per protein molecule)
The horizontal end of length L is closed but the vertical end is open to the atmosphere. A fluid of density (p) fills the tube to a height H and the tube is rotated about the vertical axis at rotati
Determine the air gage pressure required to lift the piston toa height of 2m above the air-fluid interface in the large tank, as shown.
Which properties are the same for both reactions and which are different? the number of atoms of each element, the state of the methane molecules, the enthalpy change of the reaction, the state of t
What volume, in Ml of a 1.20 M HCL solution must be diluted in order to prepare 1.00 L of 0.0150 M HCL
At 990 degree C Kc is 1.6 for the following reactions. i 4.0 mol of CO, 3.0 mol of H2O, 2.0 mol of H2 and 1.0 mol of CO2 are placed in a 5.0L container and allowed to reach equilibrium at 990 degree
Once ready, he put a bit of sand on top. He loaded about 1 gram of product that had been dissolved in 1 ml of ethyl acetate.