Problem related to first-order reaction
A certain first-order reaction (A to products) has a rate constant of 4.20×10-3 at 45 degrees celcius. How many minutes does it take for the concentration of the reactant,[A] , to drop to 6.25 of the original concentration?
Expected delivery within 24 Hours
If 147 mL of wet H2 is collected over water at 24°C and a barometric pressure of 735 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr at 24°C.)
What is the mass of the solid NH4Cl formed when 64.0 g of NH3 are mixed with an equal mass of HCl? What is the volume of the gas remaining, measured at 14.0° C and 752 mmHg?
How much heat energy is required to raise the temperature of 0.365 of copper from 23.0 to 60.0 ? The specific heat of copper is 0.0920 cal/(g*Celsius) .
Calculate the smallest increment of energy that an object can absorb from yellow light whose wave length is 214nM.
To what volume will the gases expand against a constant pressure of 660. torr if all the energy of combustion is converted into work to push back the piston?
What mass of titanium displaces 65.2 mL of water at 25 ^circ {rm C}
What is the molality of a solution prepared by dissolving 413 mg of KBr in 6.45 mL of water at 25.0 0C. The density of water at 25.0 0C is 0.997 g/mL.
The specific gravity of mercury is 13.64 . What would be the mass of a sample of mercury that occupies a volume of 4.55 mL?
1939379
Questions Asked
3,689
Active Tutors
1454020
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Question: What is the memory system called that provides a temporary "register" for information while it is being used?
I think the videos were teaching the steps of dating life in real world situations. Such as starting how you meet your partner, all the way into newlywed life.
I believe the best time to teach children about sex is during pre-pubescence because this is when they start becoming curious and may hear things from friends
Answer the question about the relationship between the sentences. In colonial America, 10 to 30 percent of children did not survive their first year of life.
Question: What physical changes occur in adolescence that mark the transition to a mature young adult?
S resides in a home with his mother and father, who, despite being separated, continue to live together under one roof.
Question: In their research on adolescents' perceptions of mental health, Chandra and Minkovitz found that: