User Maher

1 vote

2 answers

4k views

Why does HCO₂⁻ exhibit delocalized bonding while CO₂ does not?

bond

asked Aug 15, 2014 at 16:12

1 vote

4 answers

45k views

How to figure out which phase on a phase diagram will be the most dense?

physical-chemistry phase

asked Aug 13, 2014 at 10:30

5 votes

2 answers

36k views

How can I find the heat that will be released in kJ per gram for the reaction of Al with Fe2O3?

thermodynamics heat

asked Aug 11, 2014 at 19:25

5 votes

2 answers

6k views

Is viscosity proportional to the number of hydroxyl groups?

organic-chemistry intermolecular-forces

asked Jul 27, 2014 at 13:38

0 votes

2 answers

35k views

The relationships between n , T , P , V for a gas?

gas-laws mole

asked Jul 25, 2014 at 19:57

4 votes

2 answers

2k views

How to calculate the partial pressure of oxygen in this mixture of oxygen and argon?

gas-laws mixtures

asked Jul 24, 2014 at 15:31

2 votes

1 answer

183 views

A 1.00 L gas at 100 °C and 500 Torr contains 70.0 % He and 30.0 % Ne by mass. What is the partial pressure of He?

gas-laws

asked Jul 24, 2014 at 5:26

6 votes

6 answers

32k views

What is the proper Lewis structure for HCOOH?

organic-chemistry bond lewis-structure

asked Jul 22, 2014 at 5:25

4 votes

1 answer

2k views

Determine the ΔH for the reaction in kJ/mol of ethanol?

thermodynamics

asked Jul 14, 2014 at 0:28

1 vote

2 answers

58k views

without using electronegativity, which one of these molecules is polar? [closed]

polarity

asked Jul 12, 2014 at 15:34

0 votes

2 answers

5k views

Calculate the second ionization energy for the Mg from the following data?

homework thermodynamics

asked Jul 12, 2014 at 15:10

0 votes

1 answer

3k views

How to identify ions by their quantum number?

quantum-chemistry

asked Jul 10, 2014 at 12:34

3 votes

1 answer

7k views

How to determine the specific heat of methanol from calorimeter data?

thermodynamics heat

asked Jul 3, 2014 at 11:58

2 votes

1 answer

26k views

What total energy (in kJ) is contained in 1.0 mol of photons, all with a frequency of 2.75 • 10¹⁴ Hz?

thermodynamics electromagnetic-radiation

asked Jul 2, 2014 at 17:33

1 vote

1 answer

2k views

Determine the concentration of the original NaOH solution

stoichiometry concentration

asked Jun 25, 2014 at 11:16

2 votes

1 answer

3k views

What is the formula of potassium ammonium sulfate?

inorganic-chemistry

asked Jun 20, 2014 at 15:47

1 vote

1 answer

2k views

A sample of copper(II) sulfate pentahydrate (CuSO4·5H2O) contains 0.360 g of water. What is the total number of atoms in the compound

stoichiometry

asked Jun 20, 2014 at 11:43

0 votes

1 answer

812 views

what's the ratio of atoms of these two isotopes?

stoichiometry

asked Jun 20, 2014 at 0:37

1 vote

1 answer

667 views

Use the given information to write the formula of this compound

stoichiometry

asked Jun 19, 2014 at 23:37

0 votes

1 answer

9k views

what's the mass of the original sample (g)?

stoichiometry

asked Jun 19, 2014 at 23:00

Stack Exchange Network

current community

your communities

more stack exchange communities

20 Questions

Why does HCO₂⁻ exhibit delocalized bonding while CO₂ does not?

How to figure out which phase on a phase diagram will be the most dense?

How can I find the heat that will be released in kJ per gram for the reaction of Al with Fe2O3?

Is viscosity proportional to the number of hydroxyl groups?

The relationships between n , T , P , V for a gas?

How to calculate the partial pressure of oxygen in this mixture of oxygen and argon?

A 1.00 L gas at 100 °C and 500 Torr contains 70.0 % He and 30.0 % Ne by mass. What is the partial pressure of He?

What is the proper Lewis structure for HCOOH?

Determine the ΔH for the reaction in kJ/mol of ethanol?

without using electronegativity, which one of these molecules is polar? [closed]

Calculate the second ionization energy for the Mg from the following data?

How to identify ions by their quantum number?

How to determine the specific heat of methanol from calorimeter data?

What total energy (in kJ) is contained in 1.0 mol of photons, all with a frequency of 2.75 • 10¹⁴ Hz?

Determine the concentration of the original NaOH solution

What is the formula of potassium ammonium sulfate?

A sample of copper(II) sulfate pentahydrate (CuSO4·5H2O) contains 0.360 g of water. What is the total number of atoms in the compound

what's the ratio of atoms of these two isotopes?

Use the given information to write the formula of this compound

what's the mass of the original sample (g)?