25,963 Answered Questions for the topic chemistry

Chemistry

02/21/24

Balancing Equations
Balance the equation. Then add up the coefficients on both sides of this properly balanced equation and identify the total~N2 + H2 → NH3~KNO3 + H2CO3 → K2CO3 + HNO3~Na3PO4 + HCl → NaCl +... more
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Chemistry

02/21/24

How do do I work this problem?
Valproic acid, a medication used to treat epilepsy and bipolar mania, contains only C, H, and O. Combustion of 1.000 g of valproic acid produces 2.441 g of CO₂ and 1.000 g of H₂O. Determine the... more
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Chemistry

02/21/24

General Chemistry 2, 3d Lewis structure
Draw the three-dimensional shapes (draw good Lewis structure first) Of the reactants and products of the following single step reaction then draw the most likely form of the transition state for... more
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Chemistry

02/21/24

gen chem 2 question
Using your measured [H+] in 0.100 M acetic acid, which is 0.01413 M, determine the fraction of acetic acid molecules that are ionized in the solution.
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Chemistry

02/21/24

Empirical and Molecular Formula
A compound containing only phosphorous and oxygen was found to have 43.64 % phosphorous by mass and 56.36 % oxygen by mass. The molecular formula has a molar mass of 141.94 g/mol.  Determine... more
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Chemistry

02/21/24

A 1 liter solution contains 0.368 M hydrocyanic acid and 0.491 M sodium cyanide. Addition of 0.092 moles of barium hydroxide will:
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Chemistry

02/21/24

Calculating mass of atoms
What is the mass in grams of (2.0x10^1) sodium atoms? Please attach your work!
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Chemistry

02/20/24

Pressure at Equilibrium
For the reaction 2 SO₃(g) ⇌ 2 SO₂(g) + O₂(g) Kp = 2.62 × 10⁻⁶ at 400 °C. A 1.50 L vessel at 400 °C is filled with SO₃(g) at an initial pressure of 4.75 atm and allowed to come to equilibrium. What... more
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Chemistry

02/20/24

Empirical and Molecular Formula

A compound containing only phosphorous and oxygen was found to have 43.64 % phosphorous by mass and 56.36 % oxygen by mass. The molecular formula has a molar mass of 141.94 g/mol.  Determine... more
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Chemistry

02/20/24

Empirical and Molecular Formula
A compound containing only nitrogen and oxygen was found to have 25.936% nitrogen by mass and 74.064% oxygen by mass. The molecular formula has a molar mass of 216.04 g/mol.  Determine... more
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Chemistry

02/20/24

Percent Mass Equation
A 0.956 g sample of a hydrate is heated, leaving 0.343 g of anhydrous compound. What is the percent mass of water in the hydrate? Please attach your work for full credit!
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Chemistry

02/18/24

Solving for a reactant
Ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O).What mass of ammonia is consumed by the reaction of 5.91 g of oxygen gas?Be sure your answer has... more
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Chemistry

02/18/24

Solving for a reactant
Ammonium phosphate ((NH4)3PO4)is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H3PO4)with ammonia (NH3).What mass of ammonium phosphate is produced by the... more
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Chemistry

02/18/24

Solving moles-to-moles limiting reactant

Hydrogen (H2) gas and oxygen (O2) gas react to form water (H2O) vapor. Suppose you have 3.0 mol of H2 and 11.0 mol of O2 in a reactor.Suppose as much as possible of the H2 reacts. How much will be... more
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Chemistry

02/18/24

Solving for a react using a chemical equation
Ammonium phosphate ((NH4)3PO4)is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H3PO4)with ammonia (NH3).What mass of ammonium phosphate is produced by the... more
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Chemistry

02/18/24

How to solve this delta G problem? (gen chem 2)
The evaporation of one mole of water at 298 K has a standard free energy change of 8.58 kJ.H2O(l)⇌H2O(g) ΔG°=8.58 kJ (a) Is the evaporation of water under standard thermodynamic conditions... more
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Chemistry

02/18/24

moles-to-moles limiting reactant
Methane (CH4) gas and oxygen (O2) gas react to form carbon dioxide (CO2) gas and water (H2O) vapor. Suppose you have 7.0 mol of CH4 and 1.0 mol of O2 in a reactor.Calculate the largest amount of... more
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Chemistry

02/18/24

Moles-to-moles limiting reactant
Nitrogen (N2) gas and hydrogen (H2) gas react to form ammonia (NH3) gas. Suppose you have 2.0 mol of N2 and 1.0 mol of H2 in a reactor.What would be the limiting reactant? Enter its chemical... more
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Chemistry

02/18/24

Solving for a reactant using a chemical equation
A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O) .What mass of carbon dioxide... more
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Chemistry

02/18/24

I need help with this delta G question!! (gen chem 2)
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of ATP to ADP as described by the reactionATP(aq) + H2O(l) -->... more
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Chemistry

02/17/24

Percentage Yield
Gaseous methane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . If 3.56 g of carbon dioxide is produced from the reaction of 1.8 g of methane and 9.6 g of... more
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Chemistry

02/17/24

Solving moles-to-moles
Solid aluminum and oxygengas react to form solid aluminum oxide. Suppose you have 5.0 mol of Al and 9.0 mol of O2 in a reactor.Suppose as much as possible of the Al reacts. How much will be left?... more
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Chemistry

02/17/24

You have a solution which is 32.2% by mass isopropyl alcohol (MM = 60.11 g/mol) in water. The density of this solution is 0.905 g/mL. What is the molality of the isopropyl alcohol in the solution?
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Chemistry Biochemistry

02/17/24

Calculate the volume in mL of a 0.250 M KOH solution that should be added to 5.250g of HEPES (MW=238.306g/mol and pKa=7.56) to give pH of 7.88
Calculate the volume in mL of a 0.250 M KOH solution that should be added to 5.250g of HEPES (MW=238.306g/mol and pKa=7.56) to give pH of 7.88.KOH volume = mL
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Chemistry Biochemistry

02/17/24

You are asked to prepare 500mL 0.100M acetate buffer using only pure acetic acid (MW= 60.05g/mol and pKa= 4.76), 3.00 M NaOH and water

You are asked to prepare 500mL 0.100M acetate buffer using only pure acetic acid (MW= 60.05g/mol and pKa= 4.76), 3.00 M NaOH and waterWhat volume of 3.00 M NaOH must be added to the acetic acid to... more
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