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what is the empirical formula of a compound with the following percent composition: 40 percent sulfur and 60 percent oxygen
The energy involved when an electron is added to a gaseous atom of an element is called: a)ionization energy b)lattice energy c)electronegativity d)electron affinity
The ratio of carbon, hydrogen, and oxygen atoms in a molecule is 4:6:1. What is the molecular formula of the compound if the gfm is 280 grams
What is the empirical formula of a compound that is 50.7 percent antimony and 49.3 percent selenium by weight
Which concept would explain why the carbon to carbon bond lengths in benzene, C6H6, are identical? a)hybridization b)London dispersion forces c)resonance d)hydrogen bonding
If 1 amu = 1.661 x 10-24 g, what is the weighted average atomic mass of a boron atom in grams
It is not practical to count individual atoms/molecules because of their small size. However, we can determine the number of atoms/molecules in a sample if we know the mass of a single atom/molecule
The mass of a sample of boron atoms is 5.60 g. How many boron atoms are in this sample
Need to show curly arrows and the identification of which is the nucleophile (if there is one). Is this a nucleophilic substitution? What is the Raschig process and is this even an example of a R
Write the balanced ionic and net ionic equation for each What is the balanced ionic and net ionic equation for each: 1.) MgCO3 + HBR 2.) CH3CO2H + NH4OH 3.) AgNO3 + AlCl3 4.) BaF2 + H2SO4
What is the balanced ionic and net ionic equation for each: 1.MgCO3 + HBR 2.CH3CO2H + NH4OH 3.AgNO3 + AlCl3 4.BaF2 + H2SO4
If the blocks were placed at a temperature of 20oC, what will be the force of compression when the temperature reaches 40oC? The contact area between the block is 0.20m2. Will fracture occure?
Comment on burning diesel fuel as a sustaniable practice, both in terms of how things have improved and in terms of where they still need to go
Write a chemical equation that shows how burning diesel fuel containing sulfur contributes to air pollution
After the reaction was complete, the unused I2was titrated with 8.27 mL of 0.02772 M thiosulfate solution. Calculate the weight of Pb(C2H5)4(MW = 323.4 g/mol) in each liter of gasoline.
Aqueous solutions of nickel (II) sulfate and potassium ferricyanide were mixed in a test tube. determine the folowing a) type: B) products: C) balanced molecular equation: D Balanced complete ionic
The maximum number of electrons in an atom that can have quantum numbers n=2 and l=1 is: a. 2 b. 4 c. 6 d. 8 [2] Which species is diamagnetic in the ground state
For a given sample of CH3OH, the enthalpy change during the reaction is 82.1 kJ. How many grams of methane gas are produced?
The geometries of the molecules BF3 and NF3 are trigonal planar and trigonal pyramidal repectively. Which statement best accounts for the difference
The combustion of octane (C8H10) with molecular ocygen is an exothermic reaction that produces carbon diocide and water. Write and balance the equation
What is the maximum number of electrons that can have a principal quantum number of 3 within one atom. options: 8 18 3 32 Which atom is paramagnetic in the gaseous state
Calculate the pH of 0.10 M KOH where KOH is a strong base. The answer should be above 7 since its a BASE.
A 27.0 gram sample of an unknown hydrocarbon is burned in exess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon
What type of orbital is used to form the pi-bond in C2H4: H2C=CH2 Question 12 options: sp3 sp2 sp p
If 58.3 grams of a 14% (m/m) solution of NaOH were boiled to dryness, how much NaOH would remain? If the recovered NaOH (from part a) were re-dissolved in 1.22kg of water, what would the resulting