06/20/22

Calorimetry - Chemistry

An unknown sample is being evaluated in lab. What is the specific heat capacity of the compound if it requires 266.98 J to raise the temperature of 57.46 grams of the unknown from 15.2 °C to 64.5 °C.
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06/20/22

Calorimetry - Chemistry

Calculate the final temperature of the system: A 50.0 gram sample of water initially at 100 °C and a 100 gram sample initially at 3.76 °C are mixed. The specific heat of water is 4.184 J/g°C.
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06/20/22

Calorimetry - Chemistry

A sample of flammable liquid is placed into an enclosed cylinder which is then fitted with a movable piston. Initially the cylinder contains a volume of 4.30 L. The sample is ignited producing gas... more
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06/20/22

Calorimetry - Chemistry

How much heat (in joules) is used to heat a 76.60 gram sample of iron from 11.0 degrees Celcius to 100.00 degrees Celcius if the specific heat of Fe is 0.450 J/g°C?
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06/20/22

if 275.0 g of glucose yields 142.9 mL of ethanol, what is the percent yield for the reaction?
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06/19/22

Determine how many grams of CO2 are produced by burning 2.43g of C4H10
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06/18/22

which compartment has the higher osmotic pressure? In which compartment will the volume level rise?
fill in blank: 0.9% 6%the compartment with the ______(m/v) albumin solution has the higher osmotic pressure.As a result, the water will flow out of the ____ albumin solution... more
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06/18/22

identify the solution that will have a higher boiling point. Explain
1.50 moles of LiOh (strong electroylkte) and 3.00 moles of KOH (strong elecctrolyte) each in 1.0 kg of water 2. 0.40 mole of Al(NO3)3 (strong electrolyte and 0.40 mole of CsCl (strong electrolte)... more
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06/18/22

Chemistry question
Which of the compounds have only dispersion forces?C9H20NH2CH2CH3CH3CH2OHCH4
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06/18/22

Using a chemical equation to find moles of product from moles
Ammonium perchlorate NH4ClO4 is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen N2 gas, chlorine Cl2 gas, oxygen O2 gas and water vapor, releasing a... more
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06/18/22

how to find the Calorimeter constant
Temp of cold water 2.0 CTemp of hot water 92.0Volume of cold water 100.0 mLVolume of hot water 97.0 mLFinal temp after mixing 45.0 C Mass of cold water 100.0Mass of hot water 97.0Calorimeter... more
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06/17/22

Reaction Yields
Consider this reaction: 2 Al + 3 CuCl2 → 3 Cu + 2 AlCl3 The reaction begins with 29.54 g of Al and 71.48 g of copper II chloride. a) How many grams of Cu is produced? B) How many grams of AlCl3 is... more
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06/16/22

General Chemistry I
Calculate the enthalpy change converting 2.5g of water at -35.0 C to steam at 140.0 C under constant pressure of 1 atm. The specific heats of ice, liquid water, and steam are 2.03J/g-K, 4.18 J/g-K,... more
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06/16/22

GENERAL CHEMISTRY I

An unknown homonuclear diatomic gas effuses 2.34 times faster than smellium gas (molar mass = 175 g/mol). What is the molar mass of the unknown gas? Identify the unknown gas.
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06/16/22

Finding molar mass
An unknown gas was analyzed, and the following data was obtained Mass of the gas sample 1.211 g Volume of the gas 677 mL Temperature 23oC Pressure 750.12 Torr Determine the molar mass of the... more
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06/15/22

The highest theoretical possible temperature of water
The molar heat of combustion of pentane (C5H12) to form carbon dioxide and water liquid is - 3509 kJ/mol. If 4.65 g of pentane is burned to heat the 2.00 L of water at 20.0°C, the highest... more
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06/15/22

Describe how are you going to prepare 100 mL 3M NaOH solution from NaOH pellets
Concentration needed: 3M solutionVolume needed: 100 mLConcentration available: pellets (solid)Please state a complete detailed solution. Please help me ASAP
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06/15/22

Describe how are you going to prepare 100 mL of 6M HCl solution from 32% to 38% HCl solution
Concentration needed: 6M solutionVolume needed: 100 mLConcentration available: 32% - 38%Please state a complete detailed solution. Please help me ASAP
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06/15/22

Describe how are you going to prepare 100 mL 3% (by mass) H2O2 solution from 20% to 40% H2O2 solution
Concentration needed: 3%Volume needed: 100 mLConcentration available: 20% to 40%Please state a complete detailed solution. Kindly help me asap because it's so difficult
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06/14/22

Ibuprofen contains carbon, hydrogen, oxygen (C3H3O2), combustion anaylsis of a sample of ibruprofen revealed the following mass composition, determine the molecular formula of ibuprofen
The molar mass of ibuprofen is 206.2722 g/molmass composition: H 8.795%, O = 15.513%, C= 75.691%
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06/14/22

determine the mass in grams of colbate III nitrate, Co(No3) 3 (M co(no3)3 = 244.96) that contains the same nummber of moles of oxygen, O2, as 13.52 grams of potassium sulfate, K2So4 if Mk2so4= 174.259
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06/14/22

How do I refer a particular tutor to a friend?

How do I refer a particular tutor to a friend?
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06/14/22

Describe how are you going to prepare 150 grams of 5% solution NaCl by weight.
Please state step by step calculations
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06/14/22

Formula for hydrate
What is the formula of a CoCl2 hydrate if it contains 45.43% water.
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06/14/22

Finding concentration

A 25.0 mL sample of acid rain (H2SO3) was analyzed by titration with a 0.105 M NaOH. The result showed that 14.5 mL of the base was used to neutralize the acid. Determine the concentration of... more
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