1. Resolver: a) Se tiene 2 moles de CO2. Hallar la masa.
b) Se tiene 200g de NaOH. Hallar sus moles.
c) Se tiene 3 moles de NH3. Hallar su masa.
d) Se tiene 80g de CH4. Hallar sus moles.
2. Determine el número de Mol-g en 800 g de CaCO3.
(Ca = 40, C = 12, O = 16) PORFAVOR, ayúdenme con estas 2 preguntas.

Which liquid (h2o, h2o + soap, or h2o + salt) has the strongest cohesion and adhesion? (need now plz)

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas

Solid tin exists in two forms: white and gray. for the transformation sn(s, white) → sn(s, gray) the enthalpy change is -2.1 kj/mol and the entropy change is -7.4 j/(mol*k). a. calculate the gibbs free energy change for the conversion of 1.00 mol white tin to gray tin at -30℃. b. will white tin convert spontaneously to gray tin at -30℃? c. at what temperature are white and gray tin thermodynamically equivalent at a pressure of 1 atm?