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
ra1l [238]
3 years ago
9

Colorful fireworks often involve the decomposition of barium nitrate and potassium chlorate and the reaction of the metals magne

sium ,alminium and iron with oxygen.
(a)write the formulas of barium nitrate and potassium chlorate
(b)The decomposition of solid potassium chlorateleads to the formaion of solid potassium chloride and diatomic oxygen gas write an equation for the reaction
(c) The decomposition of the solid barium nitrate leads to the formation of solid barium oxide, nitrogen gas and diatomic oxygen gas
(d)write separate equations for the reactions of the solid Metals in magnesium aluminum with a diatomic oxygen gas to yield the corresponding metal oxide (Assume iron oxide contains Fe+ ions)
Chemistry
1 answer:
Fynjy0 [20]3 years ago
5 0

Fireworks owe their colors to reactions of combustion of the metals present. When Mg and Al burn, they emit a white bright light, whereas iron emits a gold light. Besides metals, oxygen is necesary for the combustion. The decomposition reactions of barium nitrate and potassium chlorate provide this element. At the same time, barium can burn emitting a green light.

(a) Barium nitrate is a <em>salt</em> formed by the <em>cation</em> barium Ba²⁺ and the <em>anion</em> nitrate NO₃⁻. Its formula is Ba(NO₃)₂. Potassium chlorate is a <em>salt</em> formed by the <em>cation</em> potassium K⁺ and the <em>anion</em> chlorate ClO₃⁻. Its formula is KClO₃.

(b) The balanced equation for the decomposition of potassium chloride is:

2KClO₃(s) ⇄ 2KCl(s) + 3O₂(g)

(c)  The balanced equation for the decomposition of barium nitrate is:

Ba(NO₃)₂(s) ⇄ BaO(s) + N₂(g) + 3O₂(g)

(d) The balanced equations of metals with oxygen to form metal oxides are:

  • 2 Mg(s) + O₂(g) ⇄ 2 MgO(s)
  • 4 Al(s) + 3 O₂(g) ⇄ 2 Al₂O₃(s)
  • 4 Fe(s) + 3 O₂(g) ⇄ 2 Fe₂O₃(s)

You might be interested in
What is the empirical formunla of a compound that contains 85% Ag and 15% F by mass?
I am Lyosha [343]
Simple you take the largest percent and divide by the smallest percent to get the subscript for that element. So you should get Ag_{6} and just F.
3 0
3 years ago
What does the chemical formula cacl2 show about the compound it represents?
Anna [14]
A chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound.
7 0
3 years ago
Read 2 more answers
Which of the following statements are true regarding the effect of flame temperature on atomic absorbance and atomic emission sp
creativ13 [48]

Answer:

the correct option is option c, I and IV

Explanation:

Atomic emission spectroscopy is used to determine quantity of element in a sample.

Atomic emission spectroscopy based on occurring of atomic emission when a valence electron from higher energy orbital comes back to lower energy orbital.

Light intensity emitted by a flame, plasma, arc of particular wavelength are used to excite the valence electron.

The intensity of atomic emission lines are proportional to number of atoms present in the excited state.

Emission intensity is affected by temperature of the excitation source and the efficiency of atomization.

Increase in temperature does not affect the ground state population.

Therefore, statements I and IV are correct.

So, the correct option is c.

7 0
3 years ago
Which is a physical property of matter?
Flauer [41]
The answer is “D) Volume”
7 0
3 years ago
What things are needed to form a hail storm?​
Basile [38]

Answer:

Hail is a type of precipitation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diameter, and can be round or jagged.

Explanation:

6 0
3 years ago
Other questions:
  • A sample containing 1.20 moles of Ne gas has an initial volume of 7.50 L. What is the final volume of the gas, in liters, when e
    8·1 answer
  • The activation energy for the reaction no2(g)+co(g)⟶no(g)+co2(g) is ea = 375 kj/mol and the change in enthalpy for the reaction
    8·1 answer
  • Calculate the mass (in g) of 2.1 x 1024 atoms of W.
    10·1 answer
  • When a cell divides in asexual reproduction what type of cell division is it? *
    8·2 answers
  • About how many minerals make up most types of rock?
    14·2 answers
  • How does the moon move​
    11·1 answer
  • Which of the following is not a reason to use an alloy instead of a pure metal?
    14·2 answers
  • 3. Which element has the ground state electronic configuration, 1s22s22p63s23p645' ?
    8·1 answer
  • Two ways water and ice are the same
    6·2 answers
  • Determine the number of valence electrons for sodium through the use of this table.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!