Necesito ayuda con estequiometria CALCULA LOS MOLES DE CROMO SI HAY 28.5 g DE Cr2O3 (OXIDO DE CROMO)
Cr2O3 + Al = Cr + Al2O3

CALCULA LA MASA DEL CLORURO DE SODIO (NaCl) SI HAY 1.25 MOL DE CLORO
EN LA ECUACIÓN.
Na + Cl2 = NaCl

necesito procedimientos, gracias :D

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.