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Acids, bases, and salts are called electrolytes because theydissociate into ions in water. Solutions of electrolytes conductelectricity because of the presence of ions
e.g. HCl ? H+ + Cl-
(a) Would a solution of H3PO4 contain electrolytes?
(b) Would a solution of glucose, C6H12O6, containelectrolytes?
(c) MgCl2 is a salt, acid or base?
(d) Would a solution of MgCl2 contain electrolytes?
Choose the answer which presents the chemical formulas for two substances in order of decreasing melting point (highest melting point first) and gives a valid reason for this order.
Heptane can appear harmless, but when ignited, it explodes violently. What is the first law of thermodynamic?
Calculate the pH at equivalence point when 40.0 ml of 0.50 M aniline is titrated with 30.0 ml of 0.67 M HBr. For aniline Kb=3.8x10exp-10
Calculate the mass percentage of cobalt in Co3(PO3)2.
One of the vibrational modes (the asymmetry stretch) of the CO2 molecule is at 2349 cm-1. Convert this to eV, nm and K.
Question- How many moles of photons with a wavelength of 697nm would need to strike a material in order for it to absorb 54.7 kJ of energy
Consider the folowing mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution.
Suppose one wanted to make 4-methyl-2-phenyl-2-pentanol. If bromobenzene is used as one of the starting compounds, what other compound would be required in the preparation of this compound by a Grignard Synthesis
Explain when an excess of Al2O3 is added to 174mL of 2.70M H2SO4, 45.2g Al2(SO4)3 are isolated. Explain what is the % yield? Explain how many moles of H2SO4 are required if 100.0g of Al2(SO)3 are to be produced
A mole of photons in the blue visible region of the electromagnetic spectrum has an energy of 2.54 × 10 2 kJ/mol, calculate the frequency in s-1 of the photon.
Some type of wood can be characterized as C1H1.5O1.7 with a lower heating value of 19500 KJ/kg. Find its adiabatic flame temperature when burned with stoichiometric air at 100kPa, 298 K.
two vessels are labeled a and b. vessel a contains nh3 gas at 80 degrees celcuis and vessel b contains ne gas at the
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