How do I know the melting point and boiling point of each chemical?

Answers

Answer 1
Calculate the change in boiling or freezing temperature using one the following formulas: ΔTf = Kf * m or ΔTb = Kb* m.

Add the value obtained for ΔTb to the standard boiling point of the solvent (ex. 100 C for water) or subtract the value obtained for ΔTf from the standard freezing point of the solvent (ex. 0 C for water).

Related Questions

How do plants and animals rely on each other?​

Answers

Answer:

b

Explanation:

Please answer this two questions as fast as you can

Answers

Explanation:

new Mexico and Louisiana

Answer: two two

Explanation:

Is there massless ness in space?Why?

Answers

If we are comparing two different things to each other on Earth, they are pulled the same by gravity and so the one with more mass weighs more. But in space, where the pull of gravity is very small, something can have almost no weight. It still has matter in it, though, so it still has mass.

Hydrogen is an element.
True
False

Answers

Answer:

True

Explanation:

Hydrogen is one of the most abundant elements in the universe so yes

Answer:

true

Explanation:

Hydrogen is an chemical element

PLZ HELP!

Where have you seen or known of examples of waves in YOUR LIFE? Based on science terms of a wave.

Answers

Answer:

QUESTION:

Where have you seen or known of examples of waves in YOUR LIFE? Based on science terms of a wave.

ANSWER:

I've seen the following in my life:

~ Lightwaves

~ Heatwaves

~ Electromagnetic waves

~ X-rays

~ Tsunami Waves

Explanation:

Hope that this helps you out! :)          

If you have any questions please put them in the comment section below this answer.          

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Please thank me on my profile if this answer has helped you.  

Which element is a halogen?
A. chlorine (Cl)
B. oxygen (O)
C. carbon (C)
D. radon (Rn)

Answers

Answer:

Chlorine (Cl)

Chlorine is a halogen. Halogens are group 7A elements, which include fluorine, chlorine, bromine, iodine, and astatine.

So, the answer would be A.

Why is Chemistry so hard? And why is it required when most of us aren't going to use it after high school?

Answers

To be honest I don’t know
i take honors chemistry next year D: , is it really that difficult?

if an EXOTHERMIC reaction takes place in a container, the container will feel
a. hotter
b.colder
c. neither hotter nor colder

Answers

The answer to your question is A

1. The pH of a solution made by combining 150.0 mL of 0.10 M KOH with 50.0 mL of 0.20 M HBr is closest to which of the following?

Answers

Answer:

12

Explanation:

The pH of the solution prepared has been 1.25.

The pH of the solution resulting from the mixing of the two solutions can be given by:

Hydrogen ion concentration = [tex]\rm \dfrac{M_1V_1\;-\;M_2V_2}{V_1\;+\;V_2}[/tex]

Where, M1 and M2 have been the molarity of the solution and V1 and V2 have been the volume of the solutions.

For the given resulted solution:

Hydrogen ion concentration = [tex]\rm \dfrac{0.1\;\times\;0.15L\;-\;0.2\;\times\;0.05L}{0.15\;+\;0.05\;L}[/tex]

Hydrogen ion concentration = 0.055 M

pH can be defined as the negative logarithm of hydrogen ion concentration.

pH = - log (Hydrogen ion concentration)

pH = -log (0.055)

pH = 1.25

The pH of the solution prepared has been 1.25.

For more information about the pH of the solution, refer to the link:

https://brainly.com/question/4975103

please help me :)

( check the photo! )

Answers

Answer:

plastic rays i think the matetial that can widely recycle

Plastic trays and biscuits wrappers

Two reactant particles collide with proper orientation. The collision will be effective if the particles have
(A) sufficient potential energy
(B) high activation energy
(C) high ionization energy
(D) sufficient kinetic energy

And explain why, and answer in brainly

Answers

The collision will be effective if the particles have sufficient kinetic energy (Option D).

Kinetic energy is motion energy, conversely to potential energy.

Kinetic energy is required to produce the collision between particles.

The more kinetic energy the particles have, then the more collision will occur, thereby it increases the rate of a chemical reaction.

In conclusion, the collision will be effective if the particles have sufficient kinetic energy (Option D).

Learn more in:

https://brainly.com/question/25959744

Please help me out



IF YOU POST AN INNCORRECT AWNSER OR A LINK OR RANDOME THINGS I WILL REPORT U OR BAN U .

Answers

Answer:

sorry I had never done this before

how do you rewrite 4 5/7 as an improper fraction. in steps

please don't use files they don't work

Answers

Answer:

33/7

Multiply the denominator of the fraction by the whole number.

Add this result to the numerator of the fraction

answer becomes the numerator of the improper fraction.

Explanation:

Answer:

33/7

Explanation:

1. take the fraction and multiply the denominator by 4 to get 28

2. add the numerator to that... 28+5=32

Lithium arsenate (Li3AsO4) and iron nitrate (Fe(NO3)3) are dissolved in water. What precipitate would you expect to form? what is the name and formula?

Answers

Answer:

CO₃²⁻ +  H₂O <---------------->  HCO₃⁻ + OH⁻The chemical formula of the precipitate is Fe(OH)₃

Explanation:

Fe(NO₃)₃ and K₂CO₃ are strong electrolytes and completely dissociate in water. Carbonate ions is a weak base and combine with water to form hydroxide ions (OH⁻), CO₃²⁻ +  H₂O <---------------->  HCO₃⁻ + OH⁻ Ferric, Fe (III), combines with these hydroxide ions to form insoluble precipitates. Fe(OH)₃ is only partially soluble i.e., it does not completely dissociate in water. When the solutions of Fe(NO₃)₃ and K₂CO₃ are mixed, Fe(OH)₃ precipitates out due to the strong electrostatic attraction between Fe (III) and hydroxide ions.

how does salt alter the boiling point and freezing point of water

Answers

Answer:

adding salt is like adding an impurity therefore the boiling point might increase from 100°c to maybe 102°c

All of the following contribute to the evolution of a species EXCEPT -
O Respiration
O Adaptations
O Mutations
ONatural selection

Answers

Answer:

Respiration

Explanation:

Respiration is the system of how an animal breathes

HELPPP!!!
Using the following data, which is the correct rate law of the sample reaction?
A5B + 6C 3D + 3E
Experiment (A) (M) [B] (M) [C](M) Initial Rate (M/s)
1
0.35 0.35 0,35 8.0 x 104
2
0.70
0.35
0.35
3.2 x 10-
3
0.70
0.70
0.35
6,4 x 10-8
4
0.70
0.35
0.70
3.2 x 10-3
A.) K[A]^2 [B]^1 [C]^1
B.) K[A]4 [B]^2 [C]^1
C.) K(A)^2 [B]^1 [C]^O
D.) k[A]^1 (B)^2 [C]^O

Answers

i think its C not so sure rho

good ,uck!!!!

Based on the data given, the correct rate law of the sample reaction is: C. [tex]R = K[A]^2[B]^1[C]^0[/tex]

What is the rate law?

Rate law can be defined as a chemical equation that is typically used to relate the initial (forward) chemical reaction rate with respect to the concentrations or pressures of the chemical reactants and constant parameters.

Mathematically, the rate law is given by this formula:

[tex]R = K[A]^x[B]^y[C]^z[/tex]

Where:

k is the rate constant.A is the concentration of reactant A.B is the concentration of reactant B.C is the concentration of reactant C.x, y, and z are the order of the reaction.

Based on the data given, the correct rate law of the sample reaction is as follows:

[tex]R = K[A]^2[B]^1[C]^0[/tex]

Read more on rate constant here: brainly.com/question/24749252

Convert 9.213 moles of fe to grams

Answers

Answer:

514.4999849999999

Explanation:

Select all that apply. Which of the following are made of atoms?

Answers

Answer:

Your next meal, you, and your computer.

Answer:

your next meal, you and your computer.

if the pressure of a container is enlarged three times what will the pressure be?

Answers

Answer:

i guess you mean its volume, so the answer is "shrunken" 3 times

Explanation:

from the equation pV=nRT, whatever happens to its pressure, the opposite happens to its volume.

Nuclear power:

accounts for half of the energy used in the U.S.
creates less energy than fossil fuels
is a nonrenewable resource
is a renewable resource

Answers

Answer:

Is a nonrenewable resource

Explanation:

"The fuel for fusion reactors can be drawn from sea water in an almost unlimited supply. The fuel for fission, on the other hand, comes from a limited supply of uranium. Once it is depleted, it cannot be easily replenished. For this reason, nuclear power is considered a nonrenewable resource."

I got this source from ODY

Hope I could help! :)

Have a nice day

Answer:

is a nonrenewable resource

Explanation:

Zinc metal reacts with aqueous copper(II) chloride, as shown in this equation. If 3.03 x 1021 atoms of zinc react, how many grams of Cu will form? Show the sequence of conversions necessary, then calculate the numerical answer. Zn (s) + CuCl2 (aq) ---> ZnCl2 (aq) + Cu (s)

Answers

Answer:

0.320 g Cu.

Explanation:

Hello there!

In this case, case, according to the presented chemical reaction, it is possible to determine that the mole ratio of zinc to copper is 1:1 and therefore, we will have the same amount of atoms for the both of them. Moreover, since one mole of copper contains 6.022x10²³ atoms of this element, with a mass of 63.546 g (molar mass); it is possible for us to write up the following mathematical setup in order to calculate the produced grams of copper:

[tex]3.03x10^{21}atoms Zn*\frac{1atom Cu}{1atom Zn}*\frac{1molCu}{6.022x10^{23}atoms Cu}*\frac{63.546gCu}{1molCu} \\[/tex]

Thus, the numerical result turns out to be:

0.320 g Cu

Best regards!

What is the density of krypton gas (MM = 83.8 g/mol) at 3.00
atm and 100. °C?
g/L

Answers

Answer:

8.21

Explanation:

A catalyst is:
one answer only pls help lol

Answers

A catalyst is a substance that speeds up a chemical reaction.

Answer:

the second one

Explanation:

it makes the most sense

what is a fossil? and what can a fossil tell us about an organism

Answers

Fossils are the geologically altered remains of a once-living organism and/or its behaviour. There are two main types: body fossils represent all or part of the organism's body, and trace fossils show evidence of the organism's behaviour. ... Scientists who study fossils are called paleontologists
a fossil is a peice of ancient things

This worm infects humans by getting into the blood stream. It gets a
warm, safe home in the blood stream. Humans are harmed because they
may go blind or have other complications due to the parasite.
A. Mutualism
B. Commensalism
C. Parasitism

Answers

Pretty sure it’s C- hope this helps❤️

Which of the below elements will most likely form an Covalent Bond?

Answers

Answer:

You didnt put a link to the picture...

Explanation:

1.
What is Mendeleev is known for?
A. creating today's atomic model
B. discovering protons

C. publishing the first periodic table
D. discovering Mendelevium

Answers

Answer Choice: C

Explanation: Mendeleev is best known for publishing the first periodic table of elements in 1869, revolutionizing the world's understanding of physics and chemistry; and, really almost every aspect of science.

A swimmer pushes against a wall with his feet, as shown below.


The wall pushes back against the swimmer's feet with the same force. Which of Newton's laws does this best demonstrate?
A.
Newton's law of universal gravitation
B.
Newton's second law of motion
C.
Newton's third law of motion
D.
Newton's first law of motion

Answers

Answer:

C. newton's third law of motion

Explanation:

as newton's third law of motion states that every action has a reaction that is equal in size, opposite in direction, and acts simultaneously.

how many daughter cells would be produced if 32 cells undergo meiosis

Answers

Answer:

The meiosis process can for up to 4 daughter cells

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