A haloalkane 'X' if heated with sodium metal in presence of dry ether produces
2,3 - dimethyl butane
as major product
Identify x with chemical reaction.
Answer:
2 halo - propane
Explanation:
We are told that a halo alkane is heated with sodium in the presence of dry ether to produce 2,3 - dimethyl butane.
Now, according to Wurtz reaction this formation from heating with sodium in the presence of dry ether is done by 2 alkyl halides in the form of;
2RX + 2Na → R−R + 2Na+X−
Now, formula for 2,3 dimethyl butane is (CH₃)₂CHCH(CH₃)₂
Thus, from the Wurtz reaction, we can write that;
2RX + 2Na → (CH₃)₂CH - CH(CH₃)₂ + 2Na+X−
So, R = (CH₃)₂CH
This means the original halo alkane has 3 carbon atoms and thus, we can say it is 2 halo - propane.
The balanced equation below represents the reaction between carbon and hydrogen to produce
ethane.
2C(s) + 3H2(g) → C2H6(g) + energy
Determine the number of moles of O2(g) needed to completely react with 8.0 moles of CO(g).
Please help!!!
Answer:
4.0 moles
Explanation:
Based on the given reaction between carbon and hydrogen, the equation of the reaction between O₂ and CO is as follows:
2CO(g) + O₂(g) → 2CO₂(g)
The number of moles of O₂ needed to completely react with 8.0 moles of CO can be calculated knowing that 2 moles of CO react with 1 mol of O₂:
[tex] n_{O_{2}} = \frac{1 mol O_{2}}{2 moles CO}*8.0 moles CO = 4.0 moles O_{2} [/tex]
Therefore, the number of moles of O₂ needed is 4.0.
I hope it helps you!
the name for the following formula C9H18 should be
O octane
O octene
O nonane
O nonene
Which yield comes from measurements obtained during a real experiment?
A) actual yield
B) theoretical yield
C) percent yield
Answer:
A) actual yield
Explanation:
Actual yield is the amount of product that is actually produced in a chemical reaction.
Theoretical yield is the amount of product expected based on stoichiometry.
Per cent yield is the actual yield over the theoretical yield.
What is the mole fraction of ethanol when 23.2 g of ethanol(C2H5OH) are mixed with 73.1 g of water(H2O)?
(atomic mass of C= 12, H = 1, O = 16,)
Answer:
0.111
Explanation:
Step 1: Calculate the moles corresponding to 23.2 g of ethanol
The molar mass of C₂H₅OH is 46 g/mol.
23.2 g × 1 mol/46 g = 0.504 mol
Step 2: Calculate the moles corresponding to 73.1 g of water
The molar mass of H₂O is 18 g/mol.
73.1 g × 1 mol/18 g = 4.06 mol
Step 3: Calculate the total number of moles
n = nC₂H₅OH + nH₂O = 0.504 mol + 4.06 mol = 4.56 mol
Step 4: Calculate the mole fraction of ethanol
We will use the following expression.
Χ(C₂H₅OH) = nC₂H₅OH / n
Χ(C₂H₅OH) = 0.504 mol / 4.56 mol = 0.111
2 moles of sodium chloride are dissolved in 8 liters of water. What is its molarity (M) ?
Answer:
0.25M
Explanation:
Since molarity is defined as the amount of substance in 1 liter of a solution, and amount in chemistry refers to the number of moles, molarity can be found using the equation below:
Molarity= number of moles ÷ volume in liters
Given: number of moles= 2
Volume= 8L
∴ Molarity of NaCl
= 2 ÷8
= 0.25M
How many atoms are in 10.1 g Ne
Answer:
3.01 × 10²³ atoms Ne
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TablesMolesStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
Identify
[Given] 10.1 g Ne
[Solve] atoms Ne
Step 2: Identify Conversions
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
[PT] Molar Mass of Ne: 20.18 g/mol\
Step 3: Convert
[DA] Set up: [tex]\displaystyle 10.1 \ g \ Ne(\frac{1 \ mol \ Ne}{20.18 \ g \ Ne})(\frac{6.022 \cdot 10^{23} \ atoms \ Ne}{1 \ mol \ Ne})[/tex][DA] Divide/Multiply [Cancel out units]: [tex]\displaystyle 3.01398 \cdot 10^{23} \ atoms \ Ne[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
3.01398 × 10²³ atoms Ne ≈ 3.01 × 10²³ atoms Ne
Substances that have a pH
7 are considered acidic.
Answer:
False because pH value below 7 are considered acidic.
Answer:
Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic .
Explanation:
Calculate the volume in Liters of 15 moles of Neon gas (at STP)
Which gas would effuse more slowly:
Xe
CO2
CH4
N2
N2 should be the gas to effuse more slowly
How many moles are in 9.40 grams Sodium nitrate?
As the waves travel across the pan, matter is transported and hits the side of the pan
true or false?
Describe the trends in properties of chlorides across period 3 .Their formula .Their state .Their volatility .Their structure .The ph of aqueous chloride solution
Answer:
See explanation
Explanation:
Period 3 elements include; Na, Mg, Al, Si, P,S,Cl and Ar
Across the period, the chlorides of the elements change from solid to gas. The chlorides of metals are solid while the chlorides of non metals are gaseous.
Also, the chlorides become more volatile across the period. The formulas of the chlorides change from MCl to MCl2 to MCl3 to MCl4, MCl5 and MCl6 respectively across the period where M is a period 3 element.
The pH of the solutions of chlorides of period 3 elements change from neutral to acidic across the period. The pH of the chlorides of metals are neutral while the chlorides of the nonmetals usually yield acid solutions.
A 11.0g sample of a compound containing only oxygen and carbon produce 3.0g carbon and 8.0g oxygen. Determined the empirical formula of the compound?
Answer:
Empirical formula: CO₂
Explanation:
The empirical formula is defined as the simplest ratio of atoms present in a molecule. We must convert the mass of carbon and oxygen to moles as follows:
Carbon -Molar mass: 12.01g/mol-
3.0g * (1mol / 12.01g) = 0.250 moles C
Oxygen -Molar mass: 16g/mol-
8.0g * (1mol / 16g) = 0.50 moles O
The ratio of O:C is:
0.50mol / 0.250mol = 2
That means the empirical formula is:
CO₂Please do these questions, will give brainliest
Answer:
1.c 2.a.3.d 4.a
Explanation:
that is tge answer
a molecule made of carbon and oxygen atoms
Answer:
Carbon monoxide
Explanation:
The molecule has the carbon and oxygen atoms in equal amounts.
Is the reaction shown, relating carbon dioxide and pH, a reversible process?
Answer:
Yes it is reversible for the reaction.
Read the following reactions.
Reaction 1: NaCl(s) -> Na+ (aq) + CI-
Reaction 2: N2 + 3H2 -> 2NH3
Which reaction leads to an increase in entropy?
Only Reaction 1
Only Reaction 2
Both Reaction 1 and 2
Neither Reaction 1 nor 2
Answer:
Only Reaction 1
Explanation:
In reaction 1, there is a change in state from solid to liquid. Hence, there is an increase in number of ways particles and their energies could be arranged. As a result, entropy increases.
In reaction 2, there is a decrease in amount of gas particles (4 mol to 2 mol). Hence there is a decrease in the number of ways particles and their energies could be arranged. As a result entropy decreases
Only Reaction 1 will lead to an increase in entropy.
What is Entropy?This is the degree of disorderliness or randomness of a particle and it is
denoted as S.
In states of matter, conversion from solid to other states such as liquid
brings about increase in entropy which is why only reaction 1 experienced
this phenomenon.
Read more about Entropy here https://brainly.com/question/6364271
Which cannot be chemically broken down into simpler substances?
compound
element
solution
mixture
Answer:
B.
Explanation:
elements
How many atoms are in a 1.8 mol sample of Magnesium (Mg)?
Answer:
1.1 × 10²⁴ atoms Mg
General Formulas and Concepts:
Atomic Structure
MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
Identify
[Given] 1.8 mol Mg
[Solve] atoms Mg
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[DA] Set up: [tex]\displaystyle 1.8 \ mol \ Mg(\frac{6.022 \cdot 10^{23} \ atoms \ Mg}{1 \ mol \ Mg})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 1.08396 \cdot 10^{24} \ atoms \ Mg[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
1.08396 × 10²⁴ atoms Mg ≈ 1.1 × 10²⁴ atoms Mg
Answer: 1.0836 * 10^24 atoms
This value is approximate
===========================================================
Explanation:
1 mole = 6.02*10^23 atoms approximately
This applies to any element.
Multiply both sides by 1.8 and we get...
1 mole = 6.02*10^23 atoms
1.8*1 mole = 1.8*6.02*10^23 atoms
1.8 mole = 10.836*10^23 atoms
1.8 mole = (1.0836*10)*10^23 atoms
1.8 mole = 1.0836 * 10^(1+23)
1.8 mole = 1.0836 * 10^24 atoms
Add 250.0mL to 5.00mL and round off the answer
Answer:
255mL
Explanation:
(250.0 + 5.00)mL = 255.00mL
255mL
balance equation
Mg + HN03 -> Mg (N03)2 + N0 + H20
Explain the difference between solid liquid and gaseous states using the theoritical
Answer:
solid is the substance which is hard
liquid is the substance which we get in liquid form for example water milk etc
gases are those substance which we cannot touch and see
number of moles of sodium azide
Answer:
0.015382279644614 mole.
Answer:
yes this is the answer for that quaz
What are the constituents of the gases in the atmosphere
Answer:
Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.
Explanation:
Which environment has lower temperatures at higher elevations?
A: Desert
B: Grassland
C: mountain
D: Swamp
When you perform a stoichiometry calculation, you are determining the ...
A) actual yield
B) theoretical yield
C) percent yield
Answer:
B. Theoretical yield
Explanation:
Hope its help:)
metals and their ore
Answer:
Zinc
Zinc blende
(ZnS)
-----------------
Lead
Galena
(PbS)
-----------------
Mercury
Cinnabar
(HgS)
----------------
Copper
Copper glance
(Cu2S)
-------------------
Explanation:
Had to learn this for a test
Also, I plead the 5th
A scientist performs a cutting-edge experiment with exciting results. What
should the scientist do next?
A. Develop a theory based on the results
O B. Repeat the experiment
C. Perform new experiments based on the results
D. Publish the results
Answer:
B
Explanation:
It's B because the first trial of an experiment may not always be right so you want to run multiple trials
Al + AgNO3 -> Al(NO3)3 + Ag. As a balanced equation
Answer:
Al + 4AgNO3 >>Al(NO3)3+ 3Ag
Explanation:
the number of moles of No3 of the products is 3 therefore we have to balance the reactants by adding 3 before the "AgNO3" which also leades us to adding 3 mols to Ag on the products side