A. time/mass b. number/time c. energy/time d. time/energy
Explanation:
Br2 + S2O32- + 5H2O –> 2Br- + 2SO4 + 10H+ + 6e
Answer:
The paper no longer has smooth edges
The paper has not produced gas when torn
The paper has not changed colours
The paper is still paper with the same chemical makeup
Molar mass
Ca₃(PO₄)₂ = 310 g/mol
1 mole -------------------> 310 g
2.3x10⁻⁴ mole ---------> ?
m = 2.3x10⁻⁴ * 310 / 1
m = 0.0713 g
hope this helps!