Se toman 100 cm3 de una disolución de ácido sulfúrico, H2SO4, al 93,94 % en masa de pureza y densidad 1,831 g/cm3. Calcula la concentración de la disolución, expresada en kg/L. Si de la disolución tomamos 50 cm3, ¿cuál será ahora la concentración?

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.