Maher
  • Member for 7 years, 7 months
  • Last seen more than 5 years ago
6 answers
6 votes
31k views
What is the proper Lewis structure for HCOOH?
2 answers
5 votes
35k views
1 bookmarks
How can I find the heat that will be released in kJ per gram for the reaction of Al with Fe2O3?
2 answers
5 votes
5k views
1 bookmarks
Is viscosity proportional to the number of hydroxyl groups?
2 answers
4 votes
2k views
How to calculate the partial pressure of oxygen in this mixture of oxygen and argon?
1 answers
4 votes
1k views
Determine the ΔH for the reaction in kJ/mol of ethanol?
1 answers
3 votes
7k views
1 bookmarks
How to determine the specific heat of methanol from calorimeter data?
1 answers
2 votes
26k views
What total energy (in kJ) is contained in 1.0 mol of photons, all with a frequency of 2.75 • 10¹⁴ Hz?
1 answers
2 votes
170 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?
1 answers
2 votes
3k views
What is the formula of potassium ammonium sulfate?
4 answers
1 votes
43k views
1 bookmarks
How to figure out which phase on a phase diagram will be the most dense?
2 answers
1 votes
3k views
Why does HCO₂⁻ exhibit delocalized bonding while CO₂ does not?
1 answers
1 votes
2k views
Determine the concentration of the original NaOH solution
2 answers
1 votes
56k views
without using electronegativity, which one of these molecules is polar?
1 answers
1 votes
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
1 answers
1 votes
653 views
Use the given information to write the formula of this compound
2 answers
0 votes
34k views
The relationships between n , T , P , V for a gas?
2 answers
0 votes
5k views
Calculate the second ionization energy for the Mg from the following data?
1 answers
0 votes
3k views
How to identify ions by their quantum number?
1 answers
0 votes
791 views
what's the ratio of atoms of these two isotopes?
1 answers
0 votes
9k views
what's the mass of the original sample (g)?