General Chemistry Answers

(2.5 x 10^4 m/s) x (5.00 x 10^-6 s)

how scientists determine the safe doing level for an experimental drug for an experimental drug for HIV, COVID-19, Cancer

at 298k, 0.33 moles each of N2 and 0.33 moles of O2, gas are placed in a 450 mL container and allowed to react to form nitrogen trioxide. at equilibrium you find 0.12 moles of nitrogen trioxide has been produced. what is the value of K for this reaction?

The total interaction energy U(D) between two planar surfaces separated by a distance D is

U(D)= 64 kB Tn K^-1 tanh (Ze

Chemists have determined that 18.0g of water consists of 6.02x10²³ molecules. Determine the number of water molecules a one quart container can hold.

A certain weak acid (pK_a = 5.2) is used as a food preservative. Determine the pH of a 0.54 M solution.

C 3 H 8 (g) + 5 O 2 (g)  3 CO 2 (g) + 4 H 2 O (g)

Calculate mass of C 3 H 8 needed to produce 36.00 g of H 2 O. (Show the

calculation by using factor label method or dimensional analysis.)

How many moles of CaO are there in 250 g of CaO?