1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sati [7]
2 years ago
9

A solvent typically boils at 125.0∘C and a solution made from that solvent boils at 128.5∘C. If this solvent has a Kb value of 2

.43∘Cmolal, what must be the molality of the solution?
Chemistry
1 answer:
elena-s [515]2 years ago
8 0

Answer:

Explanation:

eevdwdvd

You might be interested in
Calculate the standard potential, e∘, for this reaction from its equilibrium constant at 298 k. x(s)+y4+(aq)↽−−⇀x4+(aq)+y(s)k=4.
laila [671]
First, we need to get the number of moles:

from the reaction equation when Y4+ takes 4 electrons and became Y, X loses 4 electrons and became X4+  

∴ the number of moles n = 4

we are going to use this formula:

㏑K = n *F *E/RT

when K is the equilibrium constant = 4.98 x 10^-5

and F is Faraday's constant = 96500

and the constant R = 8.314

and T is the temperature in Kelvin = 298 K

and n is number of moles of electrons = 4 

so, by substitution:

㏑4.98 x 10^-5 = 4*96500*E / 8.314*298

∴E = -0.064 V
6 0
3 years ago
What are two elements that produce background radiation on earth and what do their decay equations look like?
AlekseyPX
The two elements that produce background radiation on earth are Radon and Uranium. Airborne radon can decay on its own. Radon undergoes alpha decay to produce Polonium. Uranium naturally undergoes alpha decay to produce Thorium.
8 0
3 years ago
Read 2 more answers
Scientific notation is
nataly862011 [7]

Scientific Notation Is Basically The Shorthand For Writing Numbers. Scientists Use It When They Want To Write Numbers That Are Very Big Or Very Small.  

4 0
3 years ago
Read 2 more answers
A map here shows the motion of a tectonic plate off the coast of the western united states. Which evidence supports the theory o
notsponge [240]

Answer:

Fossils, the shape of continents, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks.

Explanation:

Fossils, the continent's shape, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks on the sea floor are the evidences that support the theory of plate tectonics in the area. Fossils provides information to us when and where plants and animals once existed. Due to diverging plates, some life became isolated, and evolved into new species. Continental ‘fit’ through coastline matching. Some division of continents look as though they should fit together, e.g. South America and Africa.

7 0
2 years ago
Explain the correlation between chemical properties and chemical changes. (plz i not sure on the answer so it would mean a lot i
Snezhnost [94]

Answer:

Explanation:

A chemical property describes the ability of a substance to undergo a specific chemical change.

A chemical reaction is a process that occurs when one or more substances are changed into one or more new substances.

Differences

Chemical properties are properties that can be observed or measured when a substance undergoes a chemical change.

Physical properties are properties that can be observed without bringing a chemical change.

Another one

chemical properties; can be used to predict how substances react.

chemical changes; It is mostly used in identifying or describing the substance.

6 0
2 years ago
Read 2 more answers
Other questions:
  • Use the E0 values of the following elements: Zn, Cu, Pb, and Al. Which element is the most active reducing agent?
    5·1 answer
  • The solubility of lead(II) iodide is 0.064 g/100 mL at 20ºC. What is the solubility product for lead(II) iodide?
    15·1 answer
  • When copper metal is added to silver nitrate in solution, silver metal & copper (ii) nitrate are produced. What mass of silv
    11·1 answer
  • What makes metals so conductive and malleable?
    8·1 answer
  • What is the mass of 2.80 grams of H2O
    10·1 answer
  • Help me plzz in chemistry​
    8·1 answer
  • If the hydroxide concentration of a solution is
    13·1 answer
  • How do sediments become<br> sedimentary rock?
    8·1 answer
  • When the offspring has a new genetic variation that a government neither of us parents it is called
    6·1 answer
  • How many atoms are in 15.1g of potassium?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!