William W. answered • 11/08/22
Math and science made easy - learn from a retired engineer
Q = mCpΔT where "Q" is the applied heat (in joules), "m" is the mass of the material, "Cp" is the Specific Heat of the material (which you google or look up in a reference book - in your case you were given that Cp for silver is 0.235. The units of that are J/(g°C)), and "ΔT" is the change in temperature (or T2 - T1) in °C
Q = mCpΔT
280 = (m)(0.235)(23.7)
280 = 5.5695m
m = 280/5.5695 = 50.3 grams to get milligrams, multiply by 1000 so m = 50,300 mg
J.R. S.
11/09/22
William W.
Or, to maintain 2 sig figs, use 5.0x10^4 mg11/09/22
Jack S.
Thank you William and J.R.S it was 5.0*10^4 mg11/09/22
Jack S.
50,300 mg is incorrect. I don't understand how it is incorrect.11/08/22