Questions tagged 'Chemistry'
452 questions
Calculate the rms speed of carbon dioxide molecules at STP.A. 12.4 m/sB. 155m/sC. 393 m/sD. 1.55 x 10^5 m/s?
Calculate the root mean square (rms) speed of carbon dioxide (CO2) molecules at standard temperature and pressure (STP). Which of the following options is correct? A. 12.4 m/s B. 155 m/s C. 393 m/s D....
How many molecules are in 8.0 g of ozone, O3?
How many molecules are present in 8.0 grams of ozone (O₃)?
Do cr3+ and v2+ have the same or different electron configurations?
Do the electron configurations of Cr³⁺ and V²⁺ differ, or are they the same?
heats of formation from bond energies! help please! thank you?
I need assistance estimating the heats of formation for the following gases using the bond energies provided in Table 3.3 of the print book or the Bond Energy Resource in the online textbook: a) NF3 b...
How many moles of h3o+ or oh− must you add to a liter of strong base solution to adjust its ph from 8.370 to 7.900?
How many moles of H₃O⁺ or OH⁻ must be added to one liter of a strong base solution to adjust its pH from 8.370 to 7.900? Please assume that the change in volume is negligible.
Dec 20, 2024
Identify the reducing agent. 2 Al3+(aq) + 2 Fe(s) → 2 Al(s) + 3 Fe2+(aq)
In the reaction 2 Al³⁺(aq) + 2 Fe(s) → 2 Al(s) + 3 Fe²⁺(aq), please identify the reducing agent.
Chemistry help !!?
a) If the pressure of water vapor is increased at a constant temperature of 100 degrees Celsius, it will _. b) If the pressure of water vapor is increased at a constant temperature of -50 degrees Cels...
FeCl3 reacts with only one of the two compounds… Chem Question!?
FeCl3 reacts with only one of the two compounds: aspirin and salicylic acid. Which part of the molecule does FeCl3 interact with?
Dec 20, 2024
How many molecules of sulfur trioxide are in 78.0 grams?
How can I calculate the number of molecules of sulfur trioxide (SO₃) contained in 78.0 grams?
Dec 20, 2024
Propane bond angle increase?
The observed bond angle in the C-C-C bond of propane is 111.66 degrees. Can someone explain why the bond angle in propane is not 109.5 degrees? I am having difficulty understanding the reason for this...