| Question | Subject | Tutorials |
|---|---|---|
| Find ph of the solution at equivalence point
1- Consider the following curve (Figure 1) for the titration of a weak base with a strong acid and answer each question. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1. … |
Chemistry / Biochemistry | Get it Now |
| Draw the path that light travels through a spectrophotometer
Diagram the path that light travels through a spectrophotometer. Utilize flow chart format. Comprise white light source, measuring phototube, sample compartment and monochrometer.
… |
Chemistry / Biochemistry | Get it Now |
| State what is the empirical formula of the nitrogen hydride
A 0.87mg sample of nitrogen reacts with hydrogen to form 1.058mg of the hydride. What is the empirical formula of the nitrogen hydride?
… |
Chemistry / Biochemistry | Get it Now |
| Calculate the binding energy per nucleon for 48ti
Question - The nuclear mass of 48Ti is 47.9359 amu. Calculate the binding energy per nucleon for 48Ti.
Express your answers to three significant figures separated by comma.
… |
Chemistry / Biochemistry | Get it Now |
| Depict every stereoisomer for 2-dimethylcyclopentane
Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. Use wedge and dash bonds for the substituent groups
… |
Chemistry / Biochemistry | Get it Now |
| Explain dominant at physiological ph and formic acid
modify the 3 molecules so that they show the form that is dominant at physiological pH: formic acid, acetylsalicylic acid (aspirin), and citric acid
… |
Chemistry / Biochemistry | Get it Now |
| Calculate the energy of a photon Calculate the energy of a photon of wavelength 11.56 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)
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Chemistry / General Chemistry | Get it Now |
| Explain what is the lewis structure and molecular shape What is the lewis structure and molecular shape around the carbons in CCl2CH2 as predicted by the VSEPR theory?
… |
Chemistry / General Chemistry | Get it Now |
| Calculate the molar mass of menthol Menthol is a crystalline substance with a peppermint taste and odor. When 1.65 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.78 °C. The fre … |
Chemistry / General Chemistry | Get it Now |
| Explain what is the minimum pressure in kpa What is the minimum pressure in kPa that must be applied at 25^degree C to obtain pure water by reverse osmosis from water that is 0.191 M in sodium chloride and 0.083 M in zinc sulfate? Assume comple … |
Chemistry / General Chemistry | Get it Now |
| Balance the reaction for the combustion of heptane An alkane undergoes combustion when it reacts with oxygen to produce carbon dioxide, water, and energy:
alkane+O2→CO2+H2O+energy
Balance the reaction for the combustion of heptane:
?C7H16+ … |
Chemistry / General Chemistry | Get it Now |
| Explain the solubility of m(oh)2 in pure water The generic metal hydroxide M(OH)2 has Ksp = 3.85×10-18. What is the solubility of M(OH)2 in pure water?
What is the solubility of M(OH)2 in a 0.202M solution of M(NO3)2?
… |
Chemistry / General Chemistry | Get it Now |
| What is the chemical formula of non-cyclic alkane If a non-cyclic alkane shows a molecular ion peak at m/z 464, what is the chemical formula?
… |
Chemistry / General Chemistry | Get it Now |
| Draw an alternative lewis structure for ch2br draw an alternative lewis structure for CH2Br. the structure they gave me already has two nonbonding electrons on Bromine with no formal charge
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Chemistry / General Chemistry | Get it Now |
| Explain the heat of combustion for a sample of coal Explain the heat of combustion for a sample of coal is 23.0kJ/g. Explain what quantity of coal (in grams) must be burned to heat 500.0 g of water from 20.0 degrees C to 95.0 degrees C. The specific he … |
Chemistry / General Chemistry | Get it Now |
| Predict the product if any of reaction between propanoyl Predict the product, if any, of reaction between propanoyl chloride and the following reagents:
(a) Li (Ph)2 Cu in ether
(b) LiA1H4, then H3O+
(c) CH3MgBr, then H3O+
(d) H3O+
(e) Cycloh … |
Chemistry / General Chemistry | Get it Now |
| Explain species and molecular structure for p2i4 Problem- Can someone please do lewis structure, geometry, species, and molecular structure for P2I4?
I want you to explicate the chemistry in this problem
… |
Chemistry / General Chemistry | Get it Now |
| What is the lewis structure and vsepr type
What is the Lewis structure, VSEPR type, molecular geometry, and bond angle for each of the following: NaClO2, KICl4, and C4H10.
… |
Chemistry / Biochemistry | Get it Now |
| What percentage of the naphthalene molecules emitted photon
Problem- A 5.00 mL ampule of a 0.100 M solution of naphtalene in hexane is excited with a flash of light. The napthalene emits 15.5 J at an average of 349nm. What percentage of the naphthale … |
Chemistry / Biochemistry | Get it Now |
| Define reactions as spontaneous or nonspontaneous as written Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions.
a) Ni2+(aq) + Pb(s) ------------------- Ni(s) + Pb2+(aq)
b) Ni2 … |
Chemistry / General Chemistry | Get it Now |
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