4.) The temperature of solid silver increases from 30C to 40C by the addition of 117.5 joules of heat. What is the mass of the silver?

The mass of silver is 49 g (0.049 kg).

Explanation:

Initial temperature = C

Final temperature = C

Quantity of heat required = 117.5 J

Specific heat capacity of silver = 0.240 J/g

mass of the silver can be determined by;

Q = mcΔθ

Where: Q is the quantity of heat required, m is the mass of substance, c is the specific heat capacity of the substance and Δθ is the change in temperature.

So that,

117.5 = m x 0.240 x (40 - 30)

117.5  = m x 0.24 x 10

        = 2.4m

m =

   = 48.9583

m ≅

m = 49 g

The mass of silver is 49 g (0.049 kg).

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.