Answers
Answer:
94.325 g
Explanation:
We'll begin by converting 350 mL to L. This can be obtained as follow:
1000 mL = 1 L
Therefore,
350 mL = 350 mL × 1 L /1000 mL
350 mL = 0.35 L
Next, we shall determine the number of mole of KC₂H₃O₂ in the solution. This can be obtained as follow:
Volume = 0.35 L
Molarity of KC₂H₃O₂ = 2.75 M
Mole of KC₂H₃O₂ =?
Molarity = mole /Volume
2.75 = Mole of KC₂H₃O₂ / 0.35
Cross multiply
Mole of KC₂H₃O₂ = 2.75 × 0.35
Mole of KC₂H₃O₂ = 0.9625 mole
Finally, we shall determine the mass of KC₂H₃O₂ needed to prepare the solution. This can be obtained as illustrated below:
Mole of KC₂H₃O₂ = 0.9625 mole
Molar mass of KC₂H₃O₂ = 39 + (12×2) +(3×1) + (16×2)
= 39 + 24 + 3 + 32
= 98 g/mol
Mass of KC₂H₃O₂ =?
Mass = mole × molar mass
Mass of KC₂H₃O₂ = 0.9625 × 98
Mass of KC₂H₃O₂ = 94.325 g
Thus, the mass of KC₂H₃O₂ needed to prepare the solution is 94.325 g
Related Questions
Please help me. Question is post on photo.
Answers
Answer:
London Dispersion Only
Explanation:
BF3 is non polar and nonpolar molecules only have london disperion forces
Two ways that salinity can increase
Answers
2)freezing sea water
PLS HELP! WILL GIVE BRAINLIST!
Assume there are 1000 units of energy in the producer level of the energy pyramid. How many units of energy are available at each of the three consumer levels? Show your calculations. Hint first, change the percentages to decimals.
Answers
Answer:
Energy retained at consumer level 1 - units
Energy retained at consumer level 2 - units
Energy retained at consumer level 3 - units
Explanation:
Formic acid, HCOOH, is a major component in ant bites. Calculate the mass, in grams of 3.14 x 1023
molecules of formic acid.
Answers
Answer:
23.97 grams.
Explanation:
First we convert 3.14 x 10²³ molecules into moles, using Avogadro's number:
3.14x10²³ molecules ÷ 6.023x10²³ molecules/mol = 0.521 molesThen we convert 0.521 moles of HCOOH into grams, using the molar mass of formic acid:
0.521 mol * 46 g/mol = 23.97 gThe answer is 23.97 grams.
K + Br2 → KBr
Identify a covalently bonded molecule in the reaction above that is a
REACTANT.
Answers
Answer: A covalently bonded molecule in the reaction
[tex]K + Br_{2} \rightarrow KBr[/tex] is [tex]Br_{2}[/tex].
Explanation:
A bond formed by sharing of electrons between two or atoms is called a covalent bond.
For example, bromine is a group 17 element and it has 7 valence electrons. It needs one more electron to complete its octet.
So, when one bromine atom chemically combines with another bromine atom then sharing of electrons takes place which leads to the formation of [tex]Br_{2}[/tex] molecule.
Hence, in the equation [tex]K + Br_{2} \rightarrow KBr[/tex]; [tex]Br_{2}[/tex] reactant is a covalently bonded molecule. A covlent bond is formed by two or more non-metal atoms that chemically combine together.
In a chemical equation, reactants are written on the left side and products are written on right side.
Thus, we can conclude that a covalently bonded molecule in the reaction
[tex]K + Br_{2} \rightarrow KBr[/tex] is [tex]Br_{2}[/tex].
Substances that are physical combinations of two or more different types of matter are known as
Answers
Answer:
A mixture!
Explanation:
Mixtures are a substance made of combining two or more different kinds of matter :)
Hope this helped!
Select a transition metal?
A.Fe
B.Al
C.Li
D.N
Answers
Here are the other two options
Answers
?????qiqkkwkqkqkq
Pcl3+H2O=H3PO3+Hcl=?
Answers
Answer:
PCl3 + 3H2O → HPO(OH)2 + 3HCl. Phosphorus(III) chloride react with water to produce phosphorous acid and hydrogen chloride.
Explanation:
Answer:
the answer is stop studying,enjoy your life,party all night,bite like a dog and purr like a cat thats it
Explanation:
i dunno
How many structural isomers does C5H12 have?
a. two
b. three
c. one
d. five
Answers
Answer:
three structural isomers
Pentane (C5H12) is an organic compound with five carbon atoms. Pentane has three structural isomers that are n-pentane, Iso-pentane (methyl butane) and neopentane (dimethylpropane).
If the temperature of 15 grams of water changes from 21C to 24C, how many joules of heat were involved? Show work
Answers
Answer:
189 Joules
Explanation:
Applying,
Q = cm(t₂-t₁)............. equation 1
Where Q = Heat, c = specific heat capacity of water, m = mass of water, t₁ = Initial Temperature, t₂ = Final temperature.
From the question,
Given: m = 15 grams = 0.015 kg, t₁ = 21 °C, t₂ = 24 °C
Constant: c = 4200J/kg.°C
Substitute these values into equation 1
Q = 0.015×4200×(24-21)
Q = 0.015×4200×3
Q = 189 Joules
Aluminum chloride, AlCl3, is an inexpensive reagent used in many industrial processes. It is made by treating scrap aluminum with chlorine according to the following equation. Please balance the equation.
__2_ Al (s) + 3___ Cl2(g) _2___ AlCl3(s)
If you start with 3.11 g of Al and 5.32 g of Cl2, which reagent is limiting? How many grams of AlCl3 can be produced? During an experiment you obtained 5.57 g of AlCl3, what was your percent yield?
Answers
Answer:
83.8%
Explanation:
The balanced reaction equation is;
2Al(s) + 3Cl2(g) → 2AlCl3(s)
Now we have to obtain the limiting reactant as the reactant that produces the least amount of AlCl3
Amount of Al = 3.11g/27 g/mol = 0.115 moles
If 2 moles of Al yields 2 moles of AlCl3
Then 0.115 moles of Al yields 0.115 moles of AlCl3
For Cl2
Amount of Cl2 = 5.32 g/71 g/mol= 0.075 moles
If 3 moles of Cl2 yields 2 moles of AlCl3
0.075 moles of Cl2 yields 0.075 * 2/3 = 0.05 moles of AlCl3
Hence Cl2 is the limiting reactant
Theoretical yield of AlCl3 = 0.05 moles of AlCl3 * 133g/mol = 6.65 g
%yield = actual yield /theoretical yield * 100
%yield = 5.57 g/6.65 g * 100
%yield = 83.8%
The major products obtained from the following sequence of reactions are:
(CH 3) 2 CHCH 2 N(CH 2 CH 3 ) 2 →CH 3 I H 2 O→ Ag 2 O →heat products.
Answers
Answer:
The answer is "Option C".
Explanation:
Please find the complete question and its solution in the attached file.
using Hoffman's elimination reaction.
across the period the size of an atom decreases and effective nuclear charge
Answers
Answer:
Atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant. Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital.
Explanation:
Which of the following is common to both nuclear fusion and nuclear fission? PLZ I NEED ANSWER quickly
1.The fuel must be in the plasma state
2.A chain reaction is needed to start the reaction
3.Matter is converted into energy
4.Temperatures over one million degrees Celsius are needed for the reaction to occur
Answers
Answer:
I think number4.Nuclear fusion reaction is not possible in earth
Nuclear fusion and nuclear fission both have common to temperatures over one million degrees Celsius are needed for the reaction to occur. Therefore, option 4 is correct.
What is nuclear fusion ?A reaction known as nuclear fusion occurs when two or more atomic nuclei fuse to create new atomic and subatomic particles. Energy is released or absorbed depending on how much mass there is between the reactants and products.
Nuclear reactions that involve fusion and fission both yield enormous quantities of energy that can be used to generate power.
The two heavy isotopes of hydrogen, deuterium and tritium, are the primary fuels used in nuclear fusion. Only 0.0153% of natural hydrogen is deuterium, which may be easily and cheaply produced from seawater. Lithium, which is also widely distributed in nature, can be used to create tritium.
Thus, option 4 is correct.
To learn more about nuclear fusion, follow the link;
https://brainly.com/question/12701636
#SPJ2
What is true of all eukaryotic organisms?
Answers
Answer:
They are multicelled
Explanation:
I just did a quiz on it UwU
For the element of Sulfur ( S ) answer the following question;
Write the electron configuration of its most common ion.
Answers
Go back to the simulation and increase the number of molecules of heavy species to 700.
Answers
Answer:
As molecules are added the container inflates/gets larger. ... And the molecules move slower and add pressure.
Explanation:
What is the pH of a .00034 M of HCl solution?
3.5
5.3
3.0
5.0
Answers
Answer:
pH = 3.5
Explanation:
HCl is a strong acid, so we can use this little formula to find the pH of the solution:
pH = -log[H3O+]
(where H3O+ is the strong acid, HCl)
So we just plug in the molarity for the concentration of the acid...
pH = -log(0.00034)
Solve.
pH = 3.468521083
And apply sig. figs....
pH = 3.5
Why is helium lighter than lead? Please someone help !
Answers
Consider this reaction: HCO3− + H2S → H2CO3 + HS− Which is the Bronsted-Lowry base? H2S HCO3- HS– H2CO3
Answers
Answer:
hco3
Explanation: bc i said so
many animals that live in the ocean use some of the dissolved minerals to build their shells. what would happen to the composition of the sea water if the number of these animals would drastically decreased?
Answers
following reactions
FeSO4+KOH
Answers
Explanation:
[tex]FeSO _{4} + \: KOH \: →K _{2}SO _{4} \: + \: Fe(OH) _{2}[/tex]
Nucleus of an atom is negatively charged.why?
Answers
Answer:
In this regard, is the nucleus positively or negatively charged? The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.
Explanation:
Branliest maybe ? :)
A sample of carbon atoms were chemically combined with a sample of oxygen atoms to yield the compound carbon dioxide. The sample of oxygen atoms was artificially manufactured to have a 3:1 ratio of
Answers
Answer:
The law companies that value excessive ethics comply with the legal guidelines
why does glucose more soluble in water comparing to benzoic acid?
Answers
Answer:
Because it desolves in water very well
example of cyclization
Answers
Answer:
yes
Explanation:
yes
PLEASE HELPPPP!!!!
WILL MARK BRAINLEST!!!
Answers
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
Which of the following pairs of elements is most likely to share one or more pairs of electrons between their nuclei?
Answers
Hydrocarbons in which carbon atoms are connected by only single bonds in straight chains or branched chains are called
a. alkanes.
b. alkynes.
c. alkenes.
d. aromatic hydrocarbons.
Answers
Answer:
Hydrocarbons in which carbon atoms are connected by only single bonds in straight chains or branched chains are called
a. alkanes.