Una muestra de gas a temperatura estándar tiene un volumen de 4.7 Ly una presión de 2.3 atm. Si el gas se calienta a 514 K y la presión
se reduce a la presión estándar, ¿cuál es el nuevo volumen del gas?

Order the following from smallest to largest atom, electron, quark, proton, neutron, molecule, nucleus

What effect might melting sea ice have for people who live in coastal areas?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)