Questions tagged 'Chemistry'
452 questions
Determine the molar mass of KAl(SO4)2 • 12H2O ?
I understand how to determine the molar masses of compounds, which is straightforward. However, I'm confused about the multiplication symbol (•) between the two compounds in the formula KAl(SO4)2 • 12...
Dec 28, 2024
calculate the enthalpy change for the neutralization please!!!?
In a coffee cup calorimeter, 100.0 mL of 1.0 M NaOH is mixed with 100.0 mL of 1.0 M HCl. Both solutions were initially at 24.6 °C. After the reaction, the final temperature is measured at 31.3 °C. Ass...
Iron ions with an oxidation state of +3 are bonded to ions of sulfur. How many iron ions are in this compound?
Iron ions with an oxidation state of +3 are bonded to sulfur ions. How many iron ions are present in this compound?
Dec 27, 2024
How many grams of li3n can be formed from 1.75 moles of li?
How many grams of Li3N can be formed from 1.75 moles of Li, assuming an excess of nitrogen? The balanced chemical equation is: 6 Li(s) + N2(g) → 2 Li3N(s). Given this information, how many grams of Li...
Chemistry problem (Mastering Chemistry)I have no idea how to do this one.?
A system at equilibrium contains I2(g) at a pressure of 0.46 atm and I(g) at a pressure of 0.34 atm. The system is then compressed to half its volume. Part A: What is the pressure of I2 when the syst...
A clear liquid with a gasoline like odor forms a layer when added to H2O. Is it a organic or inorganic? Why?
A clear liquid with a gasoline-like odor forms a layer when added to water. Is this liquid organic or inorganic? Please explain your reasoning.
What is the correct name and formula for this acid?
What is the correct name and formula for the following acid: H2CrO4? I have come across several names and formulas, including chromous acid (H(CrO4)2), hydrogen chromic oxide (HCrO4), hydrochromic aci...
Identify the element, and write its condensed ground-state electron configuration?
One reason why spectroscopists study excited states is to gain insights into the energies of orbitals that are unoccupied in an atom's ground state. Each of the following electron configurations repre...
Dec 23, 2024
Which statement is true regarding a hydrogen bond?
Which of the following statements regarding hydrogen bonds is true? A. A hydrogen bond is weaker than dipole interaction forces. B. A hydrogen bond is weaker than London dispersion forces. C. A hydrog...
Should I take the physics or biology SAT subject tests if I want to study chemistry?
I will be starting 11th grade next year and plan to apply to Oxford in 12th grade to study chemistry. I understand that I need to take a subject test in one additional science since I am not enrolled...