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Question 1 - State why the second part of each statement is incorrect and correct it.
a) Ammonium phosphate is (NH3)4PO4
b) Ammonium hydroxide is ALOH3
c) Cr(NO3)3 is chromic(ii) chloride
d) Mg(HCO3)2 is manganese (ii) carbonate
e) Ca(NO2) is calcium nitrate
Question 2: Give the chemical formulas for
a) Carbonic acid
b) Hydrobromic acid
c) Silican tetra bromicle
Identify as well as compare trends on the periodic table, as well as reactivity and relative sizes of atoms and ions use the trends to elucidate the properties of subgroups, As well as metals, non-metals, alkaline earth metals, alkali metals, halo..
Determine the atomic number and valence orbital that is filling for the element that would appear below radium in the periodic table.
Explain how many silicon atoms are in the quantum dot. Si atomos. The density of germanium is 5.325 g/cm3 if you made a 9nm quantum dot of germanium, explain how many Ge atoms would it contain? Presume the dot is spherical. Ge atoms
What volume of 4.7 M NaOH is required to react completely with 1.7 mL of a 1.51 M HCl solution?
How many grams of MgCl2 are needed to make a 3.35% w/v solution having a total volume of 500.0 mL
the value of the molar absorptivity is 4.84*10^3 M^-1 cm^-1 for K2CrO4 at that wavelength. what is the concentration of the solution
Ethylene glycol, HOCH2CH2OH, is used as antifreeze. It is produced from ethylene oxide, C2H4O, by the following reaction. C2H4O(g) + H2O(l) ? HOCH2CH2OH(l)
One series of lines of the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shell to the fourth shell. The lines can be calculated using the Balmer-Rydberg equation
A solution of ethanol (C2H5OH) in water is prepared by dissolving 58.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 235.0 mL of solution. What is the molarity of the ethanol in this solution?
A sample of Br2(g) takes 34.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane
What is the pH of a buffer solution prepared from 5.15g of NH4NO3 and 0.10L of 0.15M NH3? What is the new pH if the solution is diluted with pure water to a volume of 500mL
When 2-bromopropane reacts with ethoxide ion, two products are formed; one is the product of Sn2 substitution and the other is the product of E2 elimination.
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