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Question- Consider the molecule phosphorus pentachloride. Explain why the central atom can hold more than eight electrons. Drawing a Lewis structure will help
I am not able to determine the correct answer for the above question please helps me to get the correct answer
For the endothermic equilibrium CaCO3(s) + NH4+(aq) + SO42+(aq) -> CaSO4(s) + NH3(g) + HCO3-(aq), explain the best set of changes to apply in order to increase product yield effectively.
A segment of a DNA strand has base sequence of C-G-A-T-T-G-C-A. What is the base sequence of the other complementary strand of the double helix
If 30 mL of 6.2 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
How many moles of B2O3 can theoretically be obtained from 4 moles of B5H9 and excess O2. How much B5H9 must be reacted with O2 to produce exactly 100 g of B2O3
To creates a genetically modified transgenic goat that produce a protein that acts as a drug in its milk. The concentration of drug in the milk is 10 mM
What is the molar mass of the unknown gas? Express your answer to four significant figures and include the appropriate units.
calculate the amount of benzaldehyde (106.12 g/mol), benzophenone (182.22 g/mol), and methyl benzoate (136.15 g/mol) needed (they each get a whole 3.2 g bromobenzene)
Explain how many moles of Hydrogen ions are concerned in one equivalent of an acid-base reaction also is it possible to have a non-integral values of Valence or Oxidation state
A 32.0-g sample of water at 260. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
the rate constant for a certain reaction is k 5.40times10-3 . if the initial reactant concentration was 0.250 what
a new solid octahedral complex has been synthesis containing only chloride ans ammonia ligands. when 9.64 10-4 moles of
Lead metal can be extracted from a mineral called galena, which contains 86.6 % lead by mass. A particular ore contains 68.5 % galena by mass.If the lead can be extracted with 92.5 % efficiency, what mass of ore is required to make a lead sphere w..
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