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What is the primary extinguishing agent the fire service uses for extinguishing fires
According to the Balmer-Rydberg equation, transitions from n= 5 to m= 2 result in a photons of light that give rise to a spectral line with what color
A tank having a volume of 1000 ft3 contains 22 lb of CO2, 46 lb of O2 and 154 lb of N2. What pressure will be indicated by a pressure gage attached to the tank if the gas is at ambient temperature (80°F)
what is the half life for this reaction B) how long will it take for the concentration of SO2Cl2 to decrease to 25 percent of its initial concentration C) if the inital concentration of SO2Cl2 is 1.00 M
If the combustion gases consist of CO2, H2O, CO, O2, and N2 that exit at 1200 K and 2 atm, determine (a) the equilibrium composition of the product gases and (b) the rate of heat transfer from the combustion chamber. Is it realistic to disregard t..
Calculate the [SCN-] solution A, where 5.7 mL of 2.910?3 M NaSCN is diluted to 44.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL..
A Scientist uses an ultra-high vacuum chamber that has a pressure of 6.5x 10^-12 torr. If the temperature is 298 K, how many molecules are there in 2.0 cm^3? What is the molar volume
Assuming complete dissociation of the solute, how many grams of \rm KNO_3 must be added to 275 \rm mL of water to produce a solution that freezes at -14.5 ^\circ {\rm C}? The freezing point for pure water
All of the common noble gases are mono atomic and low boiling. Their boiling points in °C are: Ne,-245: Ar,-186;Kr,-152: and Xe, -107. Using the periodic relationship between the noble gases, predict the boiling point of Radon.
The simplest alkene has the formula C2H4 and the simplest cycloalkene has the formula C2H2
Compute the volume of a 20.0ug/mL Fe2+ solution needed to make standard Fe2+ solutions of 5.0ug/mL, 1.0ug/mL, and 0.50ug/mL in 100mL volumetric flasks.
Explain what happens when the following chemicals are mixed in water as well as how do you write a balanced chemical equation for each to show what state each substance is in? Would a reaction occur
Problem- 1) What is molar solubility of BaF2 in a solution containing 0.150 M Ba(NO3)2
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