Four substances at the same temperature absorb equal amounts of energy. The specific heats of the four substances are 1.01 J/g °C, 1.01 J/g °C, 0.38 J/g °C, and 0.44 J/g °C. What is the specific heat value of the substance that will have highest increase in temperature? (1 point) a
0.84 J/g °C

b
1.01 J/g °C

c
0.38 J/g °C

d
0.44 J/g °C

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

може ли да зареждате повече информация, моля

the objects have the same charge.