answer.
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
julsineya [31]
1 year ago
5

What is the empirical formula for C2H4(OH)2??

Chemistry
2 answers:
k0ka [10]1 year ago
8 0

Answer : The empirical formula for C_2H_4(OH)_2 is, CH_2(OH)

Explanation :

Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.  

Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

For determining the empirical formula, we need to determine the least whole number and then divide the whole number by the least whole number.

The given molecular formula is, C_2H_4(OH)_2

In this the least whole number is, 2

So, the empirical formula will be, C_{\frac{2}{2}}H_{\frac{4}{2}}(OH)_{\frac{2}{2}}=C_1H_2(OH)_1

Hence, the empirical formula for C_2H_4(OH)_2 is, CH_2(OH)

zhannawk [14.2K]1 year ago
7 0
<span>Empirical formula for C2H4(OH)2  is</span><span>
C1H3O1

</span>
You might be interested in
A sample of an alloy of aluminum contains 0.0898 mol Al and 0.0381 mol Mg. What are the mass percentages of Al and Mg in the all
blondinia [14]

Answer:

Al 72.61%

Mg 27.39%

Explanation:

To obtain the mass percentages, we need to place the individual masses over the total mass and multiply by 100%.

If we observe clearly, we can see that the parameters given are the moles. We need to convert the moles to mass.

To do this ,we need to multiply the moles by the atomic masses. The atomic mass of aluminum is 27 while that of magnesium is 24.

Now, the mass of aluminum is thus = 27 * 0.0898 = 2.4246g

The mass of magnesium is 0.0381 * 24 = 0.9144g

We can now calculate the mass percentage.

The total mass is 0.9144 + 2.4246 = 3.339g

% mass of Al = 2.4246/3.339 * 100 = 72.61%

% mass of Mg = 0.9144/3.39 * 100 = 27.39%

7 0
2 years ago
Read 2 more answers
What is the mass of solute in 200.0 L of a 1.556-M solution of KBr
sergejj [24]
The molarity of KBr solution is 1.556 M
molarity is defined as the number of moles of solute in volume of 1 L solution.
the number of KBr moles in 1 L - 1.556 mol
Therefore in 200.0 L - 1.556 mol/L x 200.0 L = 311.2 mol
Molar mass of KBr - 119 g/mol 
mass of Kbr - 311.2 mol x 119 g/mol = 37 033 g
mass of solute therefore is 37.033 kg
4 0
2 years ago
Assume that the biocapacity of Earth does not change and that human population growth continues to increase. How will people's e
Alexandra [31]
A. The Average Ecological footprint will need to decrease . 6-11-18
5 0
2 years ago
Read 2 more answers
Some building materials contain small capsules filled with paraffin wax to improve the insulating properties of the materials. T
alisha [4.7K]

Answer:

(a)

From surrounding to wax

(b)

Q = 2.62 KJ

(c)

Density of a substance is defined as the no. of particles of the substance, that occur in a unit volume. So, when the substance melts, the inter-molecular attractive forces and bonds between molecules or atoms are weakened. This, increases the distance between the molecules or atoms. Hence, the no. of particles in a unit volume is decreased. As, a result of this, the density of the substance also decreases.

Explanation:

(a)

During the melting process, the solid material or substance requires energy, in order to break the bonds between its molecules or atoms.

<u>Therefore, while the wax is melting, the net flow of thermal energy is from surrounding to the wax.</u>

<u></u>

(b)

The amount of energy required to melt solid paraffin wax is given by the formula:

Q = nC

where,

Q = amount of energy

C = Molar Heat of Fusion = 48.78 KJ/mol

n = No. of Moles = Mass in gram/Molar Mass = (15.2 g)/(282.62 g/mol)

n = 0.0538 mol

Therefore,

Q = (0.0538 mol)(48.78 KJ/mol)

<u>Q = 2.62 KJ</u>

<u></u>

(c)

Density of a substance is defined as the no. of particles of the substance, that occur in a unit volume. So, when the substance melts, the inter-molecular attractive forces and bonds between molecules or atoms are weakened. This, increases the distance between the molecules or atoms. Hence, the no. of particles in a unit volume is decreased. As, a result of this, the density of the substance also decreases.

3 0
2 years ago
A sample of 8.5 g nh3 on oxidation produces 4.5 g of no. calculate the percent yield. reaction: 4 nh3 5 o2 → 4 no 6 h2o
AnnZ [28]
<span>30.% Determine the molar mass of NH3 and NO Atomic weight nitrogen = 14.0067 Atomic weight hydrogen = 1.00794 Atomic weight oxygen = 15.999 Molar mass NH3 = 14.0067 + 3 * 1.00794 = 17.03052 g/mol Molar mass NO = 14.0067 + 15.999 = 30.0057 g/mol Moles NH3 = 8.5 / 17.03052 = 0.499103962 mol Moles NO = 4.5 / 30.0057 = 0.149971505 mol Looking at the balanced equation, for every mole of NH3 consumed, you should get one mole of NO. So if we had 100% yield, we should have 0.499103962 moles of NO. But we don't. The percent yield is a simple matter of division by what we did get by what we should get. So 0.149971505 / 0.499103962 = 0.300481497 = 30.0481497% Rounding to 2 significant figures gives 30.% yield.</span>
5 0
2 years ago
Other questions:
  • How are fossil fuels used in the harvesting of fresh apples from an apple tree?
    15·2 answers
  • 3. A 0.500 g sample of nitrogen gas combines with 1.140 g of oxygen gas to form NO2. If the atomic mass of oxygen is 16.000, cal
    6·2 answers
  • Complete the passage to describe how electrons are represented in electron dot diagrams. The maximum number of dots an electron
    13·2 answers
  • In May 2016, William Trubridge broke the world record in free diving (diving underwater without the use of supplemental oxygen)
    12·1 answer
  • Make a drawing of the particles in an NaCl solution to show why this solution conducts electricity. Make a drawing of the partic
    7·1 answer
  • A 25.0-g sample of ice at -6.5oC is removed from the freezer and allowed to warm until it melts. Given the data below, select al
    8·1 answer
  • 18) Why are the large oak trees so important for storks? Where are<br> they found?<br> 1
    8·1 answer
  • Selena is learning about how engineers choose metals for spacecraft. She discovers that spacecraft engineers often mix other met
    14·1 answer
  • Choose two different particles found in the air. Explain how they are different and how they are the same
    5·1 answer
  • How much 2 M HBr is needed to neutralize 380 mL of 0.1 M NH4OH?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!