315 Answered Questions for the topic General Chemistry

06/01/22

Calculate the boiling point and freezing point of the solutions
1. 0.575 molal aqueous solution 2. 10 g of C6H12O6dissolved in 259 g water.3. 0.5 mole Br2 dissolved in 507 g chloroform
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General Chemistry Chemistry Basic Chemistry

05/02/22

Basic Chemistry Problem
Identify if the following conditions/materials have increased or decreased intermolecular forces. Vegetable oils can flow easily compared with honey Liquid helium has the lowest boiling point at... more
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General Chemistry Chemistry

04/19/22

Solve the following problem. Refer to the given mass numbers in computing for the molar mass.
Molar numbers: Fe= 58.85O=161. If 0.95 g of Fe is used in the reaction how many moles of O2 are needed to completely react with Fe?
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General Chemistry Chemistry

03/29/22

25.00mL of a sulfuric acid solution of unknown molarity is titrated to the second equivalence point with 20.95mL of 0.243M potassium hydroxide solution
25.00mL of a sulfuric acid solution of unknown molarity is titrated to the second equivalence point with 20.95mL of 0.243M potassium hydroxide solution. What is the concentration of the sulfuric... more
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General Chemistry

03/28/22

Calculate ΔH the combustion of ethane using the given bond dissociation energies:       2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Calculate ΔH the combustion of ethane using the given bond dissociation energies:      2 C2H6 + 7 O2 → 4 CO2 + 6 H2OBond dissociation energies:           C-C (347 kJ/mol); C-H (413 kJ/mol); O=O... more
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General Chemistry Science Chemistry Biochemistry

03/20/22

Chemistry Problem Help
What is the step by step procedure of finding molar mass on these following? Glucose - C6H1206 Calcium Hydroxide - Ca(OH)2
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General Chemistry

03/10/22

An experimental data on the reaction of H2 and PO3-3 is given below
Initial[PO3] [Initial H2] Initial RateExperiment 1 0.100 0.100 ... more
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General Chemistry

03/08/22

Please help, this topic is about Hess's Law
Calculate the standard enthalphy of formation for methane gas , CH4, produced from graphite and hydrogen gas according to the following reaction: C(graphite) + 2H2(g)  CH4(g) Data given: a.... more
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General Chemistry Science Chemistry Biochemistry

03/01/22

CONCENTRATION OF SOLUTIONS CHEMISTRY (MOLARITY)
What is the molarity of a solution that contains 25 g of KOH in 250 mL of solution?  What is the mole fraction of sulfuric acid (H2SO4) in 8% aqueous H2SO4 solution?
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General Chemistry Chemistry Moles Stoichiometry

02/28/22

A certain mass of an unknown third period metal hydroxide reacts with an certain volume and concentration of a diprotic acid. How do I figure out the identity of the metal?
I used dimensional analysis and the molarity of the acid to find the moles of the acid, then multiplied it by the 1:2 stoichiometric ratio since it's a diprotic acid. This gave me the moles of the... more
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General Chemistry Chemistry Ratios Empirical Formula

09/26/21

If 1.3860 g of Mg ribbon combusts to form 2.1252 g of Magnesium oxide product, calculate the experimental empirical formula from this data.
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General Chemistry Science Chemistry Moles

06/11/21

Mass of CaCl2: 10,0 g Mass of Na2CO3: 10.0 g Actual amount collected: 2.00 g CaCO3 1. Write a balanced chemical equation.

A student performs a lab at school. They massed out both reactants and then mixed them together. The reaction produced a precipitate. They filtered out the product and took the mass of it. (I'm a... more
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General Chemistry Science Chemistry Moles

06/10/21

H2SO4 + 2 NaOH = Na2SO4 + 2 H2O How many grams of Na2SO4 could be produced from 4.94 moles of sulfuric acid?
Grateful for any help given!
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General Chemistry Science Chemistry Moles

06/10/21

C2H6 + 7O2 = 4 CO2 + 6 H2O If you wanted to produce 5.83 moles of carbon dioxide, how many moles of oxygen would you needed to have started with?
Grateful for any help given!
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General Chemistry Science Chemistry Moles

06/10/21

2 C2H6 + 7O2 = 4 CO2 + 6 H2O If 0.31 moles of H 2 O were produced, how many moles of carbon dioxide would also have been produced?
Grateful for any help given!
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General Chemistry Science Chemistry Moles

06/09/21

2 NABr + Ca(OH)2 = CaBr2 + 2 NaOH How many moles of CaB 2 are produced, if 14.72 moles of NaBr and excess Ca(OH) 2 react?
Grateful for any help given!
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General Chemistry Science Chemistry Moles

06/09/21

2 NABr + Ca(OH)2 = CaBr2 + 2 NaOH What was the initial mass of calcium hydroxide for a reaction that produced 52.9 g of NaOH?
Grateful for any help given!
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General Chemistry

05/31/21

Write the balanced COMPLETE ionic equation for the reaction when (NH₄)₃PO₄ and Na₂SO₄ are mixed in aqueous solution. If no reaction occurs, simply write only NR.
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General Chemistry Science Chemistry

05/04/21

calculate the boiling point of 500 gram aqueous solution that contains 20% ethylene glycol (C2H6O2, a non volatille liquid) if the solvent is water
helppp, how to get its boiling point
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General Chemistry

04/29/21

determine the molar mass of an unknown nonvolatile solute of non electrolyte compound raising the boiling point of 150g of benzene by 0.500 degree Celsius
This topic is about Calculating Boiling point elevation
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General Chemistry Science Chemistry

04/21/21

Balanced equations
1. Write the balanced equation for the reaction of copper (I) oxide and Vinegar.2. Write the balanced equation for the reaction of copper (II) oxide and Vinegar.
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04/20/21

From the data below, calculate the total heat (in J) needed to convert 0.816 mol of gaseous ethanol at 300.0°C and 1 atm to liquid ethanol at 25.0°C and 1 atm:
b.p. at 78.d degrees Ccgas: 1.43 J/g. degrees CDelta Hvap: 40.5 kJ/molcliquid: 2.45 J/g. degrees C
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04/16/21

Sulfur dioxide is produced in enormous amounts for sulfuric acid production. It melts at −73.0°C and boils at −10.0°C....
Its DeltaH fus is 8.619 kJ/mol, and its DeltaH vap is 25.73 kJ/mol. The specific heat capacities of the liquid and gas are 0.995 J/g.K and 0.622 J/g.K, respectively. How much heat is required to... more
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04/16/21

A liquid has a ΔH degree vap of 30.7 kJ/mol and a boiling point of 125°C at 1 atm. What is its vapor pressure at 102°C?
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04/01/21

What type of reaction is this?
Al(s) + 3Ag(NO3)2(aq) ===> Al(NO3)2(aq) + 3Ag(s)Double displacement?
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