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
liberstina [14]
3 years ago
6

Study the following reaction carefully. What classification should this reaction have? 4Al + 3O 2 2Al 2 O 3

Chemistry
1 answer:
nikitadnepr [17]3 years ago
6 0

The reaction is a synthesis…

4Al + 3O_2 \longrightarrow 2Al_2O_3\\

… because <em>two substances are combining to make one other substance</em>.

4\stackrel{\hbox{0}}{\hbox{Al}} + 3\stackrel{\hbox{0}}{\hbox{O}}_2 \longrightarrow 2\stackrel{\hbox{+3}}{\hbox{Al}}_2\stackrel{\hbox{-2}}{\hbox{O}}_3\\

It is also a <em>reduction-oxidation reaction</em> because the <em>oxidation number of Al increases</em> from 0 to +3 and the <em>oxidation number of O</em> decreases from 0 to -2.

You might be interested in
What is the chemical name for K2Se
Oduvanchick [21]

Answer:

Potassium selenide

Explanation:

Potassium selenide (K2Se)

6 0
2 years ago
Read 2 more answers
Draw fischer projection for d-2-ketotetrose
koban [17]
<span>Fischer projection for D-2-ketotetrose is in Word document below.
</span>D-2-ketotetrose is monosaccharide, having both a ketone (a ketose) and four carbons (a tetrose). There are two ketotetroses (the enantiomers) L and D-erythrulose, this is D-erytrhrulose (1,3,4-trihydroxy-2-butanone).
The <span>Fischer projection is </span>two-dimensional<span> representation of a </span>three dimensional organic molecule.

Download docx
3 0
3 years ago
Which statement is true about tomato juice?
sveta [45]

Answer:

The correct answer is Option A. Explanation: Tomato is a citrus fruit which contains citric acid as a main chemical component. This range lies in the range of acidic substances.

8 0
3 years ago
A precipitation reaction is caused by mixing 100. mL of 0.25 M K2Cr2O7 solution with 100. mL of 0.25 M Pb(NO3)2 solution. When t
Sergeeva-Olga [200]

Answer:

Neither is affected

Explanation:

The reaction occurs as follows:

K₂Cr₂O₇ + Pb(NO₃)₂ → PbCr₂O₇ + 2K⁺ + 2NO₃⁻

That means per mole of reaction you will have two moles of both K⁺ and NO₃⁻.

But volume is also doubled, doing that concentration of spectator ions doesn't change.

Right answer: Neither is affected

I hope it helps!

8 0
2 years ago
What is chemical weathering
natima [27]

Explanation:

Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.

8 0
2 years ago
Other questions:
  • In how many grams of water should 25.31 g of potassium nitrate (kno3) be dissolved to prepare a 0.1982 m solution?
    7·2 answers
  • Which of the following is true of groups on the periodic table? A. Groups are horizontal and do not have the same properties. B.
    7·1 answer
  • The ability of copper to be made into sheets is called ________ .
    11·1 answer
  • Which specific NASA goal did Apollo 9's mission focus on?​
    13·1 answer
  • How many moles of chromium III nitrate are produced When chromium reacts with 0.85 moles of lead for nitrate to produce chromium
    8·1 answer
  • How many molecules are there in 24 grams of HSO₃?
    15·1 answer
  • The saturation point for a solution is 50.0 grams of solute per 500 grams of solvent. How many grams of solute can be dissolved
    5·1 answer
  • What is the mass of 2.071x10^14 molecules of SF2
    5·1 answer
  • Please help only one question. will mark brainliest if solved​
    14·2 answers
  • A student writes the following explanation of how one type of compound is formed. these compounds are made by the repeated joini
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!