During a nuclear reaction, an unknown particle is absorbed by X2861, and the reaction products are X2963, a neutron, and a proton. What are the (a) atomic number and (b) nucleon number of the nucleus formed temporarily when the X2861 nucleus absorbs the unknown particle

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same