Given the volumes of a solvent and solute and their density, what temperature do they freeze at? It would really help if someone helped explain how to do this, I’m kind of stuck thanks
Answers
Answer:
Explanation:
To determine the freezing temperature of a solvent and solute mixture, you will need to use the freezing point depression equation. This equation allows you to calculate the change in freezing point of a solvent caused by the addition of a solute.
The freezing point depression equation is:
ΔTf = Kf x molality
where:
ΔTf is the change in freezing point of the solvent in degrees Celsius
Kf is the freezing point depression constant for the solvent, which is a specific value for each solvent and is usually provided in a table or chart
molality is the concentration of the solute in the solvent, expressed in mol/kg
To use this equation, you will need to know the volume and density of the solvent and solute, as well as the molecular weight of the solute. You can then use these values to calculate the molality of the solute in the solvent.
For example, let's say you have a mixture of 100 mL of water (solvent) and 10 g of salt (solute). The density of water is 1 g/mL and the molecular weight of salt is 58.44 g/mol.
To calculate the molality of the salt in the water, you can use the following steps:
Calculate the mass of the solvent: 100 mL x 1 g/mL = 100 g
Calculate the molality of the solute: 10 g / 58.44 g/mol = 0.171 mol
Calculate the molality of the solvent: 0.171 mol / 100 g = 0.00171 mol/g
Once you have calculated the molality of the solute in the solvent, you can use the freezing point depression equation to calculate the change in freezing point of the solvent caused by the addition of the solute.
For water, the freezing point depression constant (Kf) is 1.86 °C/m. Therefore, the change in freezing point caused by the addition of the salt to the water would be:
ΔTf = 1.86 °C/m x 0.00171 m = 0.00316 °C
This means that the freezing temperature of the solvent and solute mixture would be 0.00316 °C lower than the freezing temperature of pure water, which is 0 °C. Therefore, the freezing temperature of the mixture would be -0.00316 °C.
I hope this helps! Let me know if you have any questions or need further clarification.
Related Questions
Which of the following is an indication that a substance has undergone a chemical change?
A.
No new product has been formed.
B.
The color of the substance has not changed.
C.
The original constitute has not changed.
D.
The molecular structure has changed.
Answers
Answer:
D.
Hope it helps!!!!!!!!!
When solving mass to mass stoichiometry problems, where do you get the molar ratio for the first and second chemicals?
Answers
In the mole ratio. If you have moles of one substance. And the coefficients from the balanced equation you can use the ratio to figure out the moles of the other compounds.
explain why copper 2 oxide is a base although it does not turn litmus paper to blue
Answers
Answer:
See explanation
Explanation:
Copper II oxide is a base but not an alkali. An alkali is a soluble base. Since Copper II oxide is not soluble in water then it is not an alkali.
Let us recall that the change of colour of litmus with an alkali requires the presence of water. In the absence of water, solid Copper II oxide does not turn red litmus paper blue.
The ability to turn red litmus paper blue is commonly observed with alkalis and Copper II oxide is not an alkali.
Also recall that since Copper II oxide is not soluble, hydroxide ions are absent hence Copper II oxide does not turn red litmus paper blue.
The fictional element “Nt” contains atoms with two valence electrons. Which type of intermolecular force is most likely responsible for the properties of NtF2?
O dipole-dipole forces
O ion-ion forces
O hydrogen bonding
O dispersion forces
Answers
Nt has two valence electrons, and bonds with F to form NtF2. This means that the ion form of Nt is Nt2+. This means that NtF2 is an ionic compound.
How would these organisms be arranged in a food chain, beginning with the producers?
Drag and drop each organism into the order they would be arranged in a food chain, with the producers at the top.
help me pls this due today
Answers
Answer:
grass, grasshopper, frog, snake, hawk
Explanation:
what is rasching process only chemical reaction
Answers
Answer:
The Raschig process, the original commercial production process for hydrazine, involves oxidation of ammonia to chloramine with sodium hypochlorite, then further reaction of the chloramine with excess ammonia and sodium hydroxide to produce an aqueous solution of hydrazine with sodium chloride as a by-product.
Answer: The Rasching process is a chemical process for the producing phenol
Explanation:
If you want to change the mass of your atom by 1 or more mass units, you can ether
(2 RIGHT CHOICES)
add a proton
add a neutron
add an electron
Answers
If you want to change the mass of your atom by 1 or more mass units, you can either? Add a proton and Add a neutron.
Explanation:
Option A and Option B is your answers.
To change the mass of your atom by more mass units ; you can add a proton or add a neutron ( A and B )
The nucleus of an atom is composed of a neutron and a proton while the outer shell of an atom comprises of the electrons.
The mass of an atom is dependent on the mass of the nucleus of the atom therefore to increase the mass of the atom by any number of mass units you can either add a proton or a neutron to the nucleus of the cell.
Hence we can conclude that to change the mass of your atom you can add a proton or add a neutron to the nucleus of the atom
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An alpha particle is identical to a:
helium nucleus
hydrogen nucleus
high energy electron
radium nucleus
Answers
Helium
Hope this helped
Answer: helium nucleus
Which molecule is butyne?
H,C CH,
ОА. С=С
н Н
В.
н нннн
| | | | |
Ос. Н-с-с-с-с-с-н
1 І
Н Н Hн Н
Hн
| |
OD. н-c=C-с-с-н
ТІ
Hн
Answers
Answer:
H,C CH,
Explanation:
I’m really confused can someone help me?
Answers
Answer:
the second energy level can hold a maximum of eight electrons
Which term describes the molecule shown below?
H-C=C-H
ethyne CxHy
A. Unsaturated alkene
B. Unsaturated alkyne
O C. Saturated alkyne
O D. Saturated alkene
Answers
Answer:
Saturated alkyne
Explanation:
The hydrocarbons are known as the compounds which is made up of only carbon and hydrogen atoms. They may be saturated or unsaturated based on the number of bonds present. The molecule H-C≡C-H is an Unsaturated alkyne. The correct option is B.
The hydrocarbons in which the carbon and hydrogen atoms are connected through double or triple bonds are known as unsaturated hydrocarbons. Here ethyne is an unsaturated hydrocarbon.
Ethyne is an alkyne which have the C-C and C-H atoms connected through triple and single bonds.
Thus ethyne is option B.
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How many moles are there in 2.35x10^23 molecules of water
Answers
Answer:
0.39017 moles
Explanation:
a mole is 6.023×10^23
(2.35×10^23)÷(6.023×10^23)=0.39017
What cloud does cirrus and cumulus make???
Answers
Answer:
They're sometimes called 'mackerel skies' because they can sometimes have a grayish color which makes the clouds look a bit like fish scales. Cirrocumulus clouds exhibit features from both cumulus and cirrus clouds but should not be confused with altocumulus clouds.Explanation:
A una sustancia que tenia una etiqueta poco legible se le determina de iones de 3.16x10 a la -10 M.Calcula su pH determina si se trata de jugo de naranja o leche magneisa
Answers
Answer:
pH = 9.44, leche de magnesia
Explanation:
Número de iones [H⁺] de 3.6x10⁻¹⁰M
El pH es una medida en química utilizada para determinar si una sustancia es ácida o básica.
Si el pH < 7 La sustancia será ácida (Jugo de Naranja)
Si el pH > 10 La sustancia será básica (Leche de Magnesia)
Ahora, el pH es definido como el -log[H⁺], el pH de la solución será:
pH = -log[3.6x10⁻¹⁰M]
pH = 9.44Como el pH > 7, probablemente se trate de leche de magnesia
Where are Gold, Limestone and kaiolin found.
Answers
HELP ME!!!! What is the gravitational potential energy stored in a church bell with a mass of 60 Kg hanging in a church steeple that is 20 m high?
A. 1200 J
B. 1960 J
C. 235,200 J
D. 11, 760 J
Answers
Answer:
A
Explanation:
The shape of the directly sunlit portion of the Moon as viewed from
Earth
Answers
your answer:
lunar phases
Which of the following radiations is attracted to the positive electrode?
a.Alpha and beta particle
b.Alpha particle and neutron
c.Photon
d.Beta particle
Answers
what is the order in which types of elements are found as you move from left to right across a period? metals, nonmetals, and metalloids?
Answers
Answer:
metals, metalloids, nonmetals
Explanation:
a p e x, just took the quiz
The order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
MetalsWhen we move from left to right across a period Metals are located on the left hand side of the periodic table. Metals have high thermal conductivity.
MetalloidsWhen we move from left to right across a period Metalloids are located between metals and nonmetals. Metalloids are present p-block elements. Metalloids have good thermal conductivity.
NonmetalsWhen we move from left to right across a period Nonmetals are located on the right hand side of the periodic table. Non metals have low melting point and boiling point. Non metals have low thermal conductivity.
Thus, from conclusion we can say that the order is metals, metalloids, non metals in which elements are found as you move from left to right across a period.
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A sports car requires 10 kg of 93 octane to fill the tank. How many grams of octane are in the tank when it is full?
Answers
Answer:
There are 10,000 grams of octane in the tank of the sports car when it is full
Explanation:
To solve this problem, we simply need to convert the mass of octane- 93 from kilograms to grams, using the standard conversion factor which is given below.
it will take 10kg of octane-93 to fill up the tank
1 kg = 1000grammes
therefore 10 kg = 10 X 1000 = 10,000 grams.
Hence, there are 10,000 grams of octane in the tank of the sports car when it is full.
How many moles of H2 can be made from the complete reaction of 1.5 moles of Al? Given: 2 Al + 6 HCl → 2 AlCl3. + 3 H2
Answers
Answer:
2.25 mol H₂
Explanation:
To calculate mol of H₂ ensure that the equation is balanced. Then use the equation and dimensional analysis to convert the given 1.5 mol Al to mol of H₂.
1 How do I make a girl blush?
2 How do I know if I girl might like me by looking at her body language?
Answers
Answer:
1. Make Her Smile with You. Your smile is something which can turn the tables for you, if you possess a nice smile then it is no doubt a plus point for you or flirt with her.
2. She tilts her head while looking at you.
She constantly 'fixes' her hair, makeup, or clothing.
She returns your physical touches.
She stares or looks over at you a lot.
She blushes around you.
Explanation:
moreee help science plsssssssssssssssss helpp
Answers
HELP HELP HELP !!!!!!!!!!!!!!
Answers
Answer:
approximately 83.33
Explanation:
The formula for the area of a right square pyramid is:
V= a^2(h/3)
a= base edge
h= height
The height is 10 inches, and the base edge is 5 inches. Plug it in to the formula:
V= 5^2 (10/3)
V= 25 (10/3)
V= 83.33 in^3
How many moles of ammonia are produced due to the reaction with two moles of nitrogen?
Answers
Answer:
17.03052 mutiple by 2
34.06104grams
Which flows through the other?
Answers
There
are
approximately
317,000,000
people
in
the
U.S.,
and
the
area
of
the
U.S.
is
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4,000,000
square
miles.
If
the
people
were
spread
out
evenly,
about
how
many
people
are
there
per
square
Answers
Answer:
yesddgfhzxhcvnjxkcncjzdkccchjjbxbxbbk
number 1 ............
Answers
Answer:
I am guessing it is B. Non-metal, metals, metalloids
Metals: located in the South and West of Periodic Table. Tend to give up electrons (form cations) and form simple ionic compounds with non-metal anions. Most of the 118 known elements are metals.
2. Non-Metals : located in the North and East of the Periodic Table. Tend to attract electrons (form anions) and combine with metal cations to make ionics, or share them with other non-metals and form covalent compounds . There are nineteen nonmetals, if we consider the ‘latest” two, which are not well characterized and have fleeting lifetimes.
3. Metalloids: straddle a staircase-like region between metals and non-metals. Their properties are intermediate between metals and non metals (in varying proportions). There are only seven metalloids.
So the answer is B ❤️
What is the chemical formula for this?
Answers
Answer:
-OOH
Explanation:
This forms an acid if it comes in contact with a metal
Answer:
HO2; Hydroperoxyl
Explanation:
Since there are two oxygen molecules, and one hydrogen molecule, it can be classified as a hydroperoxyl molecule.
It is an inorganic compound with the following characteristics
Covalent compound (O,H are nonmetals) Valence of O (O must form an octet): 6 Valence of H: 1 Total valence electrons: 13 Molar mass: 33.01 g/molI got c, just wondering was it right?
Answers
Answer:
Yes you are right.
Explanation:
Answer:
yeah it´s right
Explanation: