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
Mrrafil [7]
3 years ago
13

How many grams of water will be produced when 1.6 moles of ethanol (CH3CH2OH) are burned completely? Enter a number only (no uni

ts) and express your answer using the correct number of significant figures.
Chemistry
1 answer:
AfilCa [17]3 years ago
4 0

Answer:

86

Explanation:

The reaction that takes place is:

  • C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O

First we <u>convert moles of ethanol to moles of water</u>:

  • 1.6 mol ethanol * \frac{3molH_2O}{1molEthanol} = 4.8 mol H₂O

Then we <u>convert moles of water to grams of water</u>, using its molar mass:

  • 4.8 mol H₂O * 18 g/mol = 86.4 g

So 84.6 grams of water will be produced.

You might be interested in
Calculate the mass, in grams, of 122 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g).
vitfil [10]

Answer:

6813.7g

Explanation:

Calculate the mass

Let x be the mass

If 1 mol of Fe has a mass of 55.85 g

1 mol =55.85g

122mol= x

we have x= 122•55.85g=6813.7g

7 0
3 years ago
How is the oxidation state of a transition metal determined from the chemical formula ?
Vera_Pavlovna [14]

Answer:

Explanation:

In a chemical formula, the oxidation state of transition metals can be determined by establishing the relationships between the electrons gained and that which is lost by an atom.

We know that for compounds to be formed, atoms would either lose, gain or share electrons between one another.

The oxidation state is usually expressed using the oxidation number and it is a formal charge assigned to an atom which is present in a molecule or ion.

To ascertain the oxidation state, we have to comply with some rules:

  • The algebraic sum of all oxidation numbers of an atom in a neutral compound is zero.
  • The algebraic sum of all the oxidation numbers of all atoms in an ion containing more than one kind of atom is equal to  the charge on the ion.

For example, let us find the oxidation state of Cr in Cr₂O₇²⁻

This would be:  2x + 7(-2) = -2

                          x = +6

We see that the oxidation number of Cr, a transition metal in the given ion is +6.

7 0
3 years ago
Read 2 more answers
What are the chemical properties properties of spray paint?
melisa1 [442]
There is acetone, xylene, and toluene in spray paint
8 0
3 years ago
Read 2 more answers
What is solar energy?
IrinaVladis [17]

Answer:

Solar energy is energy from the sun converting it to thermal or electric energy. It is renewable resource meaning it will never die out. It is also called radiant energy.

Explanation:

6 0
3 years ago
Which temperature is required for the cell potential to be the standard cell potential?
In-s [12.5K]
25° C is the temperature required for the cell potential to be the standard cell potential
8 0
3 years ago
Read 2 more answers
Other questions:
  • a radioactive substance has a half-life of 10 years.if you start with 30 grams of the substance, how much will remain after 30 y
    13·1 answer
  • Name three machines which convert straight motion to circular motion.
    8·1 answer
  • You believe you have cracked a secret code that uses elemental symbols to spell words. The code uses numbers to designate the el
    10·1 answer
  • How do i solve this?
    12·1 answer
  • What's another way to increase the solubility of a solid solute without increasing the temperature?
    7·1 answer
  • There are ________ unpaired electrons in the Lewis symbol for a nitride ion.
    15·1 answer
  • An example of an extensive property of matter is?<br>temp<br>pressure<br>mass<br>hardness
    9·1 answer
  • The empirical formula is:
    14·1 answer
  • How do you know how to order an empirical formula?
    15·2 answers
  • Nutritional biochemists have known for decades that acidic foods cooked in cast-iron cookware can supply significant amounts of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!