| Question | Subject | Tutorials |
|---|---|---|
| Define why the extrapolated temperature is used
1) When a metal at a higher temperature is added to water at a lower temperature. heat is inevitably lost to the container beaker or styrofoam cup. how will this unmeasured heat loss affect … |
Chemistry / Biochemistry | Get it Now |
| Define a solution containing a mixture of metal cations
A solution containing a mixture of metal cations was treated with dilute HCl and no precipitate formed. Next, H2S was bubbled through the acidic solution. A precipitate formed and was filter … |
Chemistry / Biochemistry | Get it Now |
| Explain the chlorination of 2-methylbutane that proceeded
Draw the product for the chlorination of 2-methylbutane that proceeded through a secondary radical.
… |
Chemistry / Biochemistry | Get it Now |
| Explain the heat of vaporization of ccl3f liquid
Freon 11 was a favored refrigerant until it was determined to be detrimental to the atmospheric ozone layer. The heat of vaporization of CCl3F liquid is 25.2 kJ/mol and its normal boiling po … |
Chemistry / Biochemistry | Get it Now |
| Describe sodium sulfate is slowly added to a solution
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0370 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate?
… |
Chemistry / Biochemistry | Get it Now |
| Predict the shape, state the hybridization of the central
Predict the shape, state the hybridization of the central atom and give the ideal bond angle and any expected deviations and show diagrams Lewis dot struction to get credit.
(a)Br03- (b)AsC … |
Chemistry / Biochemistry | Get it Now |
| Elements would you expect to form mainly covalent bonds
Problem- 1) Which of the following elements would you expect to form mainly covalent bonds?
Oxygen, Potassium, Phosphorus, Iodine, Hydrogen, Cesium
2) Which of the following elements w … |
Chemistry / Biochemistry | Get it Now |
| Estimate the approximate zeff felt by a valence electron
Shielding of electrons
The shielding of electrons gives rise to an effective nuclear charge,Zeff , which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a … |
Chemistry / Biochemistry | Get it Now |
| The known compounds containing the generic elements x and y
Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sample contains 0.32 g of X and the other contains 0.41 g of X. … |
Chemistry / Biochemistry | Get it Now |
| How many moles of carbon, c were in the original sample
An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 3.50 g of this compound produced 5.13 g of carbon dioxide and 2.10 g of water.
How many moles of car … |
Chemistry / Biochemistry | Get it Now |
| Define the solubility of m(oh)2 in a solution buffered at ph
Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, 14.0?
… |
Chemistry / Biochemistry | Get it Now |
| Explain that a chemist has cyclohexanone
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane. Draw the organic product resulting from using these chemicals in the Wittig reaction.
… |
Chemistry / Biochemistry | Get it Now |
| Find the molecular formula of formic acid
Formic acid is responsible for the sting you feel when stung by fire ants. By mass, formic acid is 26.10% C, 4.38% H, and 69.52% O. The molar mass of formic acid is 46.02 g/mol. Find the mol … |
Chemistry / Biochemistry | Get it Now |
| Depict the lewis dot structure of cnno2
Draw the Lewis dot structure of CNNO2 along with all possible resonance structures, labeling formal charges.
… |
Chemistry / Biochemistry | Get it Now |
| Depict a six-carbon alkyne that can exist as diastereomers
Draw a six-carbon alkyne that can exist as diastereomers. The molecule should contain only carbon and hydrogen atoms.
… |
Chemistry / Biochemistry | Get it Now |
| Compute the molar solubility of nioh2
A) Calculate the molar solubility of Ni(OH)2 when buffered at pH=8.0 B) Calculate the molar solubility of Ni(OH)2 when buffered at pH=10.0 C) Calculate the molar solubility of Ni(oh)2 when b … |
Chemistry / Biochemistry | Get it Now |
| Explain a structure unambiguously
The following label was found on a bottle of liquid hydrocarbons in the laboratory of Dr. Ima Turkey following his disappearance under mysterious circumstances. Although the name defines a s … |
Chemistry / Biochemistry | Get it Now |
| Compute the number of molecules in 7.00 moles h2s
Calculate the number of molecules in 7.00 moles H2S
Using Avogadros number calculate the number of molecules in 7.00 moles H2S
Calculate the number of moles of Cl atoms in 3.6x10^24 form … |
Chemistry / Biochemistry | Get it Now |
| Calculate the volume of household bleach
Question- A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleac … |
Chemistry / Biochemistry | Get it Now |
| Compute the energy gap between the excited and ground state
If you put 120 volts of electricity through a pickle, the pickle will smoke and start glowing an orange-yellow color. The light is emitted because the sodium ions in the pickle become excite … |
Chemistry / Biochemistry | Get it Now |
Consultant
Online