Idon't unerstand what i'm supposed to do for these

heat = mass * c * temp change
175g 0.79j/gc 75 c

heat = mass * c * temp change
352g 1.65j/gc 25 c

heat = mass * c * temp change
268g 4.18j/gc 40 c

heat = mass * c * temp change
74g 0.21j/gc 67 c

these are the answers i'm supposed to match with each one
1.04kj
10.4kj
14.5kj
44.8kj

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)