The great French chemist Antoine Lavoisier discovered the law of Conservation of

Question

The great French chemist Antoine Lavoisier discovered the law of Conservation of Mass m part by doing a famous experiment in 1775. In this experiment, Lavoisier found that mercury(U) oxide, when heated, decomposed into liquid recur and an visible and previously unknown substance oxygen gas. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid curry (11) oxide (HgO) into liquid mercury and dioxygen. Suppose 41.0 mL of dioxygen gas are produced by this reaction, at 100 0 degree C and pressure of 1 am calculate the mercury oxide the must have reacted. Be sure your answered has the correct number of significant digits.

Explanation / Answer

equation for:

HgO(s) + heat = Hg(l) + O2(g)

the balance:

2HgO(s) = 2Hg(l) + O2(g)

Q2.

V = 47 mL of Oxygen gas...

T = 100°C = 373 K

P = 1 atm

find mass of HgO used

first, find mass of O2

PV = nRT

n = PV/(RT) = 1*47/1000/(0.082*373) = 0.00153 moles of O2

ratio is

2 mol of HgO = 1 mol of O2

0.00153 mol of O2 --> 2*0.00153 = 0.00306 mol ofHgO

mass = mol*MW = 0.00306*216.5894 = 0.6627 g o fHgO

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.