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If the average mass of a single hydrogen atom is 1.67x10^-24g , what is the mass in grams of 6.02x10^23 hydrogen atoms?
When titrating a standardized solution such as NaOH, why is it important to perform each titration multiple times think about why it's important to continue titration past the equivalence point.
Acetic acid flowing at the rate of 20kg pe min. Product p is of combination leaves at rate of 100 kg per minute. Determine the composition of p?
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
C2H4 + 3O2 = 2CO2 + 2H2O If you start with 54 grams of ethylene (C2H4) how many grams of carbon dioxide will be produced?
An auto mechanic spills 90. mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid
at room temperature more of the collisions have sufficient energy to produce a reaction. the piece of zinc needs to be bigger at 4 deg c.
How does a decrease in temperature affect the partial pressure of the underlined substances and the value for Keq for each of the following reactions
A solution of the weak acid, HF, and a solution of the strong acid, HCl, have the same pH. Which solution will require the most sodium hydroxide, NaOH, to neutralize
The bond dissociation energy of H2 and Cl2 are 436 and 242 kJ/mol, respectively. The Pauling electronegativity of H and Cl are 2.3 and 3.2. What is the HCl bond dissociation energy
Calculate an approximate heat of reaction for the combustion of one mole of methane gas (CH4) to form gaseous H2O and CO2. What Volume (in L) of methane is needed to produce 2471 kJ of heat for methane gas at 35 Degrees C and 7.17 atm pressure
What volume of a 0.750 M solution of hydrochloric acid can be prepared from the HCl produced by the reaction of 25.0 g of NaCl with an excess of sulfuric acid
What is the energy difference between the two energy levels involved in the emission that results in this spectral line and calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to the n=2 level i..
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