| Question | Subject | Tutorials |
|---|---|---|
| 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 … |
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| 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?
… |
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| 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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| 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 … |
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| 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 … |
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| 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
… |
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| 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 … |
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| What size tank would be needed to contain this same amount A 12-liter tank contains helium gas pressurized to 160. What size tank would be needed to contain this same amount of helium at atmospheric pressure 1 ATM.
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| Describe how the eight-electron deficiency is eliminated For benzene(C6H6), AE=30 and NE=38. Explain how the eight-electron deficiency is eliminated by the structure of the molecule.
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| The solubility of strontium arsenate 10.At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0520 g/L. What is the Ksp of this salt at this temperature?
11.The Ksp of magnesium carbonate, MgCO3, is 6.82 &ti … |
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| Calculate the PH for each of the cases in the titration Question- Calculate the pH for each of the following cases in the titration of 25.0ml of 0.160M pyridine C5H5N(aq) with 0.160M HBr(aq):
1) Before addition of any HBr?
2) After addition of 12.5 m … |
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| Explain how many micromoles of a- and ha are present A) How many Micromoles of A- and HA are present in the solution?
B) If you now add 3mL of 1M NaOH, will you still have a valid buffer?
… |
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| Explain what is the freezing point 1. A solution is made by dissolving 0.586 mol of nonelecrolyte solution in 821 g of benzene. Calculate the freezing point and boiling point of the solution.
2. At -10.00 C, what is the max mass of … |
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| Explain compounds of boron and hydrogen are remarkable Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their reactivity. With the more reactive halogens, for example, diborane (B2H6) forms trihalides even at low tempe … |
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| Calculate the concentration of the Zn2 (aq) ion Question- The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 14.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) io … |
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| Calculate the mass of silver chloride Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride required to plate 225 mg of pure silver.
… |
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