1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Talja [164]
3 years ago
14

The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 17

75. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide () into liquid mercury and gaseous dioxygen. 2. Suppose if dioxygen gas are produced by this reaction, at a temperature of and pressure of exactly . Calculate the mass of mercury(II) oxide that must have reacted. Be sure your answer has the correct number of significant digits.
Chemistry
1 answer:
pantera1 [17]3 years ago
4 0

Answer:

1. HgO(s) → Hg(l) + 0.5 O₂(g)

2. 0.858 g

Explanation:

There is some info missing. I think this is the original question.

<em>The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 1775. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. </em>

<em>1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide (HgO) into liquid mercury and gaseous dioxygen. </em>

<em>2. Suppose 59.0 mL of dioxygen gas are produced by this reaction, at a temperature of 90.0 °C and pressure of exactly 1 atm. Calculate the mass of mercury(II) oxide that must have reacted. Be sure your answer has the correct number of significant digits.</em>

<em />

1.

The balanced chemical equation is:

HgO(s) → Hg(l) + 0.5 O₂(g)

2.

First, we will calculate the moles of O₂ using the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 1 atm × 0.0590 L / 0.0821 atm.L/mol.K × 363.2 K

n = 1.98 × 10⁻³ mol

The molar ratio of HgO to O₂ is 1:0.5. The moles of HgO are (1/0.5) × 1.98 × 10⁻³ mol = 3.96 × 10⁻³ mol

The molar mass of HgO is 216.59 g/mol. The mass of HgO is:

3.96 × 10⁻³ mol × 216.59 g/mol = 0.858 g

You might be interested in
Iron (III) oxide pentahydrate formula
Nina [5.8K]

Answer:

Molecular Formula Fe2O12S3·5H2O

IUPAC Name iron(3+);tri sulfate;pentahydrate

Explanation:

4 0
3 years ago
what element has the electron configuration of 1s22s22p63s23p64s23d104p65s24d105p66s24f 145d106p67s25f 146d8
LekaFEV [45]
It is the darmstadtium element that has the electron configuration above and the atomic number of 110
8 0
3 years ago
Which isotope is used to treat cancer?<br> (1) C-14 (3) Co-60<br> (2) U-238 (4) Pb-206
lions [1.4K]
I believe doctors use (3) Co-60 to treat ILWs. Uranium and Carbon are not used, and a different isotope of lead is used to be attached to monoclonal antibodies.
8 0
3 years ago
Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. A
Ivahew [28]

That would be when the baseball is rising. The energy from the throw is kinetic energy.

7 0
3 years ago
Read 2 more answers
How many moles are in 5.72 grams of iron (II) chloride
densk [106]

Answer:

0.0451 mol FeCl₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

5.72 g FeCl₂

<u>Step 2: Identify Conversions</u>

Molar Mass of Fe - 55.85 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of FeCl₂ - 55.85 + 2(35.45) = 126.75 g/mol

<u>Step 3: Convert</u>

<u />5.72 \ g \ FeCl_2(\frac{1 \ mol \ FeCl_2 }{126.75 \ g \ FeCl_2} ) = 0.045128 mol FeCl₂

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

0.045128 mol FeCl₂ ≈ 0.0451 mol FeCl₂

8 0
3 years ago
Other questions:
  • One of the most recognizable corrosion reactions is the rusting of iron. rust is caused by iron reacting with oxygen gas in the
    15·2 answers
  • Is sugar dissolving in water a chemical change
    10·2 answers
  • An atom of which element has the greatest attraction for electrons in a chemical bond?
    12·2 answers
  • Which property decreases when the element in group 17 are considered in order of increasing atomic number
    9·2 answers
  • Basic molecules contain more ...
    6·1 answer
  • When 0.103 g of Zn (s) is combined with enough HCl to make 50.0 mL of solution in a coffee cup calorimeter, all of the zinc reac
    13·1 answer
  • What is the mass number of an atom with 5 proton and 7 neutrons
    8·2 answers
  • A single atom of an element has 11. protons, 11. electrons, and 12 neutrons. Which element is it?
    13·2 answers
  • An electrical company charges 15 p per unit of energy (kWh).
    14·1 answer
  • Arrange the following bonds in order of increasing ionic character:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!