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
Andru [333]
1 year ago
13

SEP Use Math In another experiment, a chemist combines 7.2 grams of carbon with 19.2 grams of oxygen to form a compound. Identif

y the compound as either carbon monoxide (CO) or carbon dioxide (CO2).Moles carbon: Moles oxygen: Ratio of the number of carbon atoms to the number of oxygen atoms: Chemical formula for the compound:

Chemistry
1 answer:
babunello [35]1 year ago
3 0

Step 1 - Remembering the law of mass conservation

As stated by the law of mass conservation, in a chemical process no atoms can be created or destroyed. Consequently, the mass of the system will not change: the sum of the masses of reactants will be exactly equal the sum of the masses of products.

Step 2 - Using the law of mass conservation to understand the problem

The law of mass conservation therefore guarantees that, if we are mixing 7.2 g of C with 19.2 g of O, we will form 7.2+19.2 g of whatever is the product. Therefore we will form 26.4 g of product, which will be either CO or CO2.

Step 3 - Using mass percentage to find the correct product

Since we already know what will the mass of the product be, we can calculate the percentage of C in the product:

\text{ \%(C)=}\frac{7.2}{26.4}\times100=27.3\text{ \%}

Now, let's calculate the percentage of C in both CO (28 g/mol) and CO2 (44 g/mol), remembering that the molar mass of C is 12 g/mol:

\begin{gathered} CO\to\text{ \%(C)=}\frac{12}{28}\times100=42.8\text{ \%} \\  \\ CO_2\to\text{\%(C)=}\frac{12}{44}\times100=27.3\text{ \%} \end{gathered}

We can see that in CO2 the amount percent of C is exactly the same as we have calculated for the unknown product of this reaction. Therefore, the product is CO2.

You might be interested in
In the following equation, which element has been reduced?
Mila [183]
The answer is A. you sre correct!
4 0
3 years ago
Predict: Will a 1500 kg car moving at the same speed as the tennis ball have
sergeinik [125]
The car will have more momentum because it has a greater mass. Momentum= mass x velocity therefore if both the objects have the same velocity the object with a greater mass will have more momentum
4 0
3 years ago
Why are all atoms electrically neutral?
Anna11 [10]

Answer: Atoms are neutral if they have the same number of charged protons and electrons, balancing positive and negative charges. ... This is because water itself has slight charges. Answer 7: Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged).

7 0
3 years ago
Does anyone know how to fill in this diagram?
tangare [24]

Answer:

solid to gas is sublimation

gas to solid is deposition

liquid to gas is evaporation/boiling

the rest are correct

3 0
3 years ago
(V) A solution of hydrogen chloride is an electrolyte but a solution of
tiny-mole [99]

Answer:

When hydrogen reacts with chlorine, hydrogen chloride is formed. Hydrogen chloride is a gas, and has the formula HCl(g).

When hydrogen chloride dissolves in water, hydrochloric acid is formed. This has the same formula, but you can tell the difference because of the state symbol (aq), which stands for ‘aqueous’. The formula is written as HCl(aq).

Hydrogen chloride is made from molecules. The hydrogen atom and the chlorine atom are joined by a covalent bond. When hydrogen chloride forms hydrochloric acid, the molecules split into ions.

HCl(aq) → H+(aq) + Cl-(aq)

The H+ ions make this aqueous solution acidic. The solution also conducts electricity because it contains ions that are free to move.

However, when hydrogen chloride gas dissolves in a solvent called methylbenzene, the molecules do not split up. A solution of HCl in methylbenzene does not contain hydrogen ions, so it is not acidic. The solution also has a low electrical conductivity.

4 0
3 years ago
Other questions:
  • When Sulphur dioxide reacts with water the product formed is
    8·2 answers
  • Based on the Lewis/electron dot representation
    11·1 answer
  • In general, ionization energy will
    12·2 answers
  • Why might you have difficulty determining the pH of bleach using ph strips?
    6·1 answer
  • Explain organic chemistry
    14·2 answers
  • What is the main difference between protons and neutrons
    6·2 answers
  • The ka value for acetic acid, ch3cooh(aq), is 1.8× 10–5. calculate the ph of a 1.60 m acetic acid solution.
    6·1 answer
  • Which of the following happens during cell division? (A) Energy is created (B) Waste is eliminated (C) Carbon dioxide is release
    15·2 answers
  • The diagram shows steps and structures involved in protein production
    11·2 answers
  • The image above shows a chamber with a fixed volume
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!