Questions tagged 'Chemistry'
452 questions
Concentration of solution problem please help?
The density of toluene (C7H8) is 0.867 g/mL, while the density of thiophene (C4H4S) is 1.065 g/mL. A solution is prepared by dissolving 8.10 g of thiophene in 250.0 mL of toluene. a) Calculate the mo...
spectator ions or not?….chem test soon pls help!?
When the following two substances are mixed: K₂CO₃(aq) + Fe(NO₃)₃(aq) →, the mixture contains the ions listed below. I need to sort these species into spectator ions and ions that react, but I’m not s...
Arrange these elements according to electronegativity?
Can you please arrange the following elements in order of increasing electronegativity: Rubidium (Rb), Oxygen (O), Aluminum (Al), Carbon (C), and Sodium (Na)?
if the pressure of water vapor is increased at a constant
If the pressure of water vapor is increased at a constant temperature: a) At a constant temperature of 100 degrees Celsius, it will _. b) At a constant temperature of -50 degrees Celsius, it will _. c...
Is 1 mL = 1 cm3 (that’s cm cubed)?
My chemistry professor mentioned that 1 liter (L) equals 1 cubic decimeter (dm³), which is also equal to 1000 cubic centimeters (cm³) and 1000 milliliters (mL). Based on this, does it mean that 1 cm³...
Dec 10, 2024
Construct an efficient three-step synthesis of 1,2-epoxycyclopentane from bromocyclopentane. Each section only takes one reagent.?
I am seeking assistance in constructing an efficient three-step synthesis of 1,2-epoxycyclopentane from bromocyclopentane, with the requirement that each step utilizes only one reagent. I believe I ha...
Complete and balance the molecular equation for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead(ii) acetate, pb(c2h3o2)2.
Please complete and balance the molecular equation for the reaction between aqueous ammonium bromide (NH4Br) and aqueous lead(II) acetate [Pb(C2H3O2)2]. Additionally, include the physical states of al...
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) –> 2NO2(g)?
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) → 2NO2(g) using the following reactions and their enthalpies of formation: 1/2 N2(g) + O2(g) → NO2(g), ΔH = +33.2 kJ 1/2 N2(g) + 1/2 O2(g) → N...
Dec 09, 2024
Is ClO2- polar or nonpolar?
Is the chlorite ion (ClO2-) polar or nonpolar? Could you explain the factors that contribute to its polarity, including its molecular geometry and electronegativity differences?
Calculate the mass of fluorine per gram of sulfur for the sample of sulfur hexafluoride.?
Sulfur and fluorine form several different compounds, including sulfur hexafluoride and sulfur tetrafluoride. In a decomposition reaction, a sample of sulfur hexafluoride produced 4.46 g of fluorine a...