Si se sabe que el bronce se forma con 60% de cobre y 40% de estaño¿cual sera la masa de cobre contenida en 200 gramos de bronce

Mass of copper in 200 g bronze is 120 g.

Explanation:

If it is known that bronze is formed with 60% copper and 40% tin, what will be the mass of copper contained in 200 grams of bronze?

Percentage of copper in bronze = 60 %

Percentage of tin in bronze = 40 %

Mass of bronze  = 200 grams

Mass of copper in bronze = 60 % of 200 g

= 0.6 x 200 = 120 grams

Mass of copper in 200 g bronze is 120 g.  

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.