Gaseous methane (CH₄) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O) If 0.391 g of carbon dioxide is produced from the reaction of 0.16 g of methane and 0.84 g of oxygen gas, calculate the percent yield of carbon dioxide.
Answers
Answer : The percent yield of is, 68.4 %
Solution : Given,
Mass of = 0.16 g
Mass of = 0.84 g
Molar mass of = 16 g/mole
Molar mass of = 32 g/mole
Molar mass of = 44 g/mole
First we have to calculate the moles of and
.
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 2 mole of react with 1 mole of
So, 0.026 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of
From the reaction, we conclude that
As, 2 mole of react to give 1 mole of
So, 0.026 moles of react to give
moles of
Now we have to calculate the mass of
Theoretical yield of = 0.572 g
Experimental yield of = 0.391 g
Now we have to calculate the percent yield of
Therefore, the percent yield of is, 68.4 %
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What would happen if Earth absorbed all of the heat from the sun?(1 point)
Answers
m = mass of the block of iron = 25 g
Q = heat absorbed by the block of iron = 1200 J
ΔT = increase in the temperature of iron due to heat absorbed = ?
c = specific heat of block of iron = 0.450 J/(g C)
Heat absorbed by the block of iron is given as
Q = m c ΔT
inserting the values in the above formula
1200 = 25 (0.450) ΔT
1200 = (11.25) ΔT
ΔT = 1200/11.25
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Answers
You can then calculate that 3.6L of Hydrogen contains 0.16mol
1mol/22.4L x 3.6L = 0.16mol
Every 2 moles of Hydrogen require 1 mole of oxygen to form water. Therefore half of the number of moles of oxygen are required.
0.16mol/2 = 0.08mol
Again, we know that at STP 1 mol occupies 22.4L
0.08mol x 22.4L/mol = 1.79L of O2 needed.
Also 3.6/2 = 1.8 All ideal gasses will occupy the same ammount of space at STP
Answers
Since the majority of the men have to go to the war, the business in the homeland was being taken care of by women
hope this helps
Answer:
explained below.
Explanation:
World war 1 leads to suffer the Americans people a lot .
Young men were forced to go for war which leads to the deplete the financial condition of the house hold. Industry starts to suffer a lot as most of the people who were working has to go for war and man power decreases.
Which leads women to come out of there houses and took job for them so, that they can full fill there needs which starts the new era where woman also start working with men.
Answers
The class of organic compounds that contains nitrogen is (3) amine.
Amines are organic compounds that contain a nitrogen atom bonded to one or more carbon atoms. They can be considered derivatives of ammonia (NH₃), where one or more hydrogen atoms are replaced by organic groups. Amines play essential roles in biological systems and are involved in various chemical reactions and processes. They can be classified as primary, secondary, or tertiary amines based on the number of carbon groups attached to the nitrogen atom.
Hence, the correct option is an amine option 3.
Learn more about amine here:
#SPJ 6
Subtract the ratio of the actual mass of the compound to the empirical formula mass from the subscripts of the empirical formula.
Divide the ratio of the actual mass of the compound to the empirical formula mass by the subscripts of the empirical formula.
Add the ratio of the actual mass of the compound to the empirical formula mass to the subscripts of the empirical formula.
Answers
Answer : Option A) Multiply the ratio of the actual mass of the compound to the empirical formula mass by the subscripts of the empirical formula.
Explanation : To find molecular formula for a compound one needs to follow the below steps using the emphirical formula of that compound.
Step 1) Calculate the empirical formula mass of that compound
Step 2) Take the ratio of gram molecular mass by the empirical formula mass that was obtained in step 1.
Step 3) Multiply each of the subscripts within the empirical formula by the number that is calculated in step 2.
By following these easy steps one can find the molecular formula.
The step that would help a student finds the molecular formula of a compound from the empirical formula is by ‘Multiply the ratio of the actual mass of the compound to the empirical formula mass by the subscripts of the empirical formula.’
Answers
Answer:
one more proton
Explanation:
The symbol for phosphorous is P; it is element 15 on the Periodic Table. That
means phosphorous-31 has 15 protons. The symbol for sulfur is S; it is
element 16 on the Periodic Table. Sulfur-32 has 16 protons.