A 25 g piece of copper wire is heated, and the temperature of the wire changes from 20°C to 75°C. The amount of heat absorbed is 250 cal. What is the
specific heat of copper?
343.8 kJ
0.18 J/g °C
0.18 cal/g °C

asking the goog might u get an answer

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.