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
Anastaziya [24]
3 years ago
7

Solid carbon (C) can burn in oxygen (O2). Select

Chemistry
1 answer:
Vitek1552 [10]3 years ago
8 0

Answer:

  • CO₂

Explanation:

The equation that you have to complete is:

  • C + O₂ → ?

This is, you have to find the products formed and the coefficients in front of each substance to balance the chemical equation.

Carbon may react with oxygen using oxidation number 2 or 4.

If carbon uses oxidation number 2, the chemical equation is:

  • 2C + O₂ → 2CO

If carbon uses oxidation number 4, the chemical equation is:

  • C + O₂ → CO₂

Normally, an incomplete combustion yields to a mixture of products: both CO and CO₂, and it only happens when the amount of oxygen is limitied.

When there is plenty of oxygen available, the combustion is complete and the only product of the reaction is CO₂.

With that information, and the fact that the list of choices do not include CO as product, you conclude that this is a complete combustion, and the chemical equation is:

  • C + O₂ → CO₂

So, the choice that completes the chemical equation is CO₂.

You might be interested in
Which process describes vaporization that takes place below the surface of a liquid?
NISA [10]

 The correct answer is evaporation because Vaporization that takes place only on the surface of a liquid is called Evaporation.

*Hope this helps!

6 0
3 years ago
Read 2 more answers
Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . Suppose 0.98 g
cestrela7 [59]

Answer:

0.43 grams is the maximum mass of sodium sulfate that could be produced by the chemical reaction.

Explanation:

Mass of sulfuric acid = 0.98 g

Moles of sulfuric acid = \frac{0.98 g}{98 g/mol}=0.010 mol

Mass of sodium hydroxide = 0.240 g

Moles of sodium hydroxide = \frac{0.240 g}{40 g/mol}=0.0060 mol

H_2SO_4(aq)+2NaOH(s)\rightarrow Na_2SO_4(aq)+2H_2O(l)

According to reaction, 2 moles of sodium hydroxide reacts with 1 mole of sulfuric acid , then 0.0060 moles of sodium hydroxide will react with :

\frac{1}{2}\times 0.0060 mol=0.0030 mol of sulfuric acid

As we can see that we have 0.010 moles of sulfuric acid but only 0.0030 moles of sulfuric acid will react which indicates that it is in excessive amount where as sodium hydroxide is in limiting amount.

So, amount of sodium sulfate to be formed will depend upon moles of sodium hydroxide.

According to reaction, 2 moles of sodium hydroxide gives with 1 mole of sodium sulfate , then 0.0060 moles of sodium hydroxide will give :

\frac{1}{2}\times 0.0060 mol=0.0030 mol of sodium sulfate

Mass of 0.0030 moles of sodium sulfate :

0.0030 mol × 142 g/mol = 0.426 g ≈ 0.43 g

0.43 grams is the maximum mass of sodium sulfate that could be produced by the chemical reaction.

4 0
2 years ago
HElp me plzzzzz??????
iris [78.8K]

Answer:

The answer to your question is given below

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Zn + 2HCl —> ZnCl2 + H2

Thus, we can write out the atoms present in both the reactant and the product by doing a simple head count. The atoms present are listed below:

Element >>> Reactant >>> Product

Zn >>>>>>>> 1 >>>>>>>>>> 1

H >>>>>>>>> 2 >>>>>>>>> 2

Cl >>>>>>>>> 2 >>>>>>>>> 2

4 0
2 years ago
Why is copper used to make electric wires?​
sesenic [268]

Question:

Copper is used in a variety of applications, one of which is electrical wires. Whether it’s a power cable for a TV, computer, kitchen appliance or construction tool, it’s probably made of copper. Featuring the atomic number 29, this red-brown metal has become essential to our everyday life by helping power countless devices. But copper isn’t the only material that can transmit electricity, so why is it preferred for creating electrical wires?

Answer:

<h2>The two most important factors on why Copper is used to make not just electric wires, but lots of electric related things is that they are Inexpensive and Super Conductive</h2>

Explanation:

Now, I will explain the reasons why these are good things about the copper wire.

<h2>High Conductivity </h2>

Surpassed only by silver, copper is a highly conductive metal. This means electricity can pass through it with greater ease, making it ideal for use in electrical wires. Companies can use other conductive metals to create electrical wires. Unless they use silver, though, the high conductivity properties of copper allow for a greater distance of electrical current travel. Companies can create longer, better performing electrical wires using copper instead of most other conductive metals.

<h2>Inexpensive </h2>

Copper is also relatively inexpensive when compared to other metals. Gold, for example, is an excellent conductor of electricity, but it costs several times more than copper. If companies used gold to manufacture electrical wires, they’d essentially waste money, as copper is more conductive and costs less than its goal counterpart. This alone is reason enough to make copper the de-facto standard for electrical wires.

<h2>High Ductility </h2>

Copper isn’t just conductive; it’s also ductile. In other words, you can bend and flex copper — to some degree — without it breaking or otherwise sustaining damage. Why is this important? Well, electrical wires must often travel through walls, floors, ceilings and other tight spaces. As a result, they’ll naturally bend and snake their way around the home or building in which they are used. The ductile properties of copper allow copper electrical wires to bend and flex. They’ll still transmit electricity, and they won’t lose any power strength from shape deformity.

<h2>Thermal Resistant </h2>

A benefit of copper electrical wires that’s often overlooked is its thermal-resistant properties. According to ESFI, electrical fires are responsible for more than 51,000 residential house fires in the United States each year — and that’s not accounting for commercial/business fires. Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat.

<h2>As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it’s inexpensive; it’s ductile; and it’s thermal resistant. This makes is the universally accepted standard for the manufacturing of electrical wires.</h2>

<h2 />
3 0
2 years ago
The characteristic bright-line spectrum of an atom is produced when
Inessa05 [86]

Bright Line Emission Spectrum: As the excited electron returns to ground state (it's lower energy level) the energy it originally absorbed is released as discrete lines of light.

8 0
3 years ago
Other questions:
  • In an experiment using a calorimeter, the following data were obtained: what is the total number of joules absorbed by the water
    6·1 answer
  • What is the correct name for the compound CoCl3?
    11·2 answers
  • how do the patterns of diffracted light from the bulb and glowing hydrogen tube differ in appearance?
    12·1 answer
  • What name should be used for the ionic compound Pb(SO4)2
    12·1 answer
  • Is electrolysis of water an example of a chemical reaction? Why or why not?
    9·1 answer
  • Aluminum oxide forms when aluminum reacts with oxygen. 4Al(s) + 3O2(g) → 2Al2O3(s) A mixture of 82.49 g of aluminum (M.W.= 26.98
    5·2 answers
  • Convert 650. J of energy to either kcal or cal
    13·1 answer
  • Complete the sentence. When an acid is added to water, hydrogen ions __________.
    15·1 answer
  • In an experiment, 20 cm of a gaseous hydrocarbon Z requires 80 cm' of oxygen for complete
    13·1 answer
  • Write a net ionic equation for the reaction that occurs when excess hydroiodic acid and chromium(II) carbonate (s) are combined.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!