An atom Y has atomic number of 13.It loses 3 electrons in other to be stable. i. What is the proton number and the electron number of the atom;
a. before it loses electrons
b. after losing electrons
ii. Name the type of ion formed by the atom when it loses 3 electrons. Show illustrations.​

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

Find the number of moles of argon in 364g of argon.

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3