Concentration of the reactant
A certain first-order reaction () has a rate constant of 6.60×10-3 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
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The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii. Rank from largest to smallest radius. To rank items as equivalent, overlap them. NA+ F- 02- Al3+ Mg2+ N3-
The density of diamond is 3.63 g/cm3 and the density of lead is 11.0 g/cm3. If equal masses of diamond and lead are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest volum
If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 atm?
Discuss how u would design a drive shaft based on the knowledge gained from performing this experiment and previous knowlede on materials properties, materials processing and forming.
The boiling point of a solution containing 10.44 g of an unknown nonelectrolyte in 50.00 g of acetic acid is 159.2°C. What is the molar mass of the solute?
Small spheres of equal mass are made of lead (density =11.3 {rm g}/{rm cm}^{3}), silver (10.5 {rm g}/{rm cm}^{3}), and aluminum (2.70 {rm g}/{rm cm}^{3}). Without doing a calculation, list the spheres in order from the largest to the smallest.
Steam flowing through a long, thin-walled pipe maintains the pipe wall at a uniform temperature of 500K. The pipe is covered with an insulation blanket comprised of two different materials, A and B.
To what general class of mechanisms does the attack of bromide ion, Br-, on the cyclic bromonium ion(bridged bromonium intermediate of E-stilbene) belong? Does this ring-opening step follow first or second-order kinetics?
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Explain one of Haidt's sub-claims in the book (e.g., social media harms teen and pre-teen girls development, leading to higher levels of depression and anxiety)
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