An unstable isotope has a half life of 3 days. How many kg of a 820 kg sample will remain after 6 days?

Draw the more stable lewis dot structure for bro2-

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest