What is the si unit for the quantity of particles in a sample?

Determine the rate law and the value of k for the following reaction using the data provided. NO2 (g) + O3 (g) → NO3 (g) + O2 (g) [NO2]i (M) [O3]i (M) Initial Rate0.10 0.33 1.420.10 0.66 2.840.25 0.66 7.

What is the density of mercury.

For hydrocyanic acid, HCN, Ka = 4.9 * 10-10. Calculate the pH of 0.20 M NaCN. What is the concentration of HCN in the solution? for the ph i got 10 is that right?

A chemist prepares a solution of silver (I) nitrate (AgNO3) by measuring out 269. micromol of silver (I) nitrate into a 300. mL volumetric flask and filling the flask to the mark with water.

When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

What do we call the process by which cells obtain the energy that they need?

Which of the following statements describes how the periodic table is organized? 1. The elements are organized alphabetically. 2. The elements are organized by their size. 3. The elements are organized by the date they were discovered. 4.

Which of the following is a mixture A aluminum B BaSO3 C Milk D table salt

Which of the following quantum number combinations is not allowed in an atom? A. n = 2, l = 1, mr = - 1 B. n = 1, l = 1, m = 0 C. n = 8, l = 5, m = - 4 D. n = 6, l = 3, m = 2

13. Adding thermal energy to a gas at constant pressure will cause