El oro es un metal que resistente a la corrosion, por esta razon razon se emplea en joyeria y su pureza mide por lo quilates que contiene, el oro puro tiene 24 quilates, si una pulsera de oro de 18 quilates pesa 40g y tiene un precio comercial de 2817.70, ¿cuanto vale 1 mol de oro puro?

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

a corroding iron, if that's one of your choices

sup bro, im dumb, but this is what i found xd

"the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface"