Answer:
Does water move in or out of a hypotonic solution?
In a hypertonic solution, the net movement of water will be out of the body and into the solution. ... In hypotonic solutions, there is a net movement of water from the solution into the body. A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.
Explanation:
If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, there is no net water movement, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.
What liquid measurement comes after a US liquid gallon?.
what are the factors affecting concentrations of solution
Answer:
Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...
Physical state of the reactants and surface area. ...
Temperature. ...
Presence of a catalyst.
Radiation on the _________________ is measured in wavelengths and frequencies.
Answer:
The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. The other types of EM radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, X-rays and gamma-rays
Explanation:
Answer:
Scale
Explanation:
Somebody please answer this i’ll give brainly
Which is more consistent across different substances: the relationship between number of molecules and the number of moles or the relationship between mass and the number of moles? Explain your answer.
Answer:
number of molecules and the number of moles
Explanation:
Its always same for molcols
The relationship between number of molecules and the number of moles is more consistent as the moles and molecules are related by Avogadro's number.
What is Avogadro's number?
Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number
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What mass of zinc will completely react with 125.0 mL of a solution of nitric acid (HNO3) which has concentration of 0.850M?
The mass of zinc required to react with HNO3 is 3.45 g
What is moles of HNO3 reacting?The moles of HNO3 reacting is calculated using the formula below:
moles = concentration × volumevolume = 0.850
volume = 125.0 mL = 0.125 L
Moles of HNO3 = 0.850 × 0.125 = 0.10625 moles
Equation of reaction:
Zn + 2 HNO3 --> Zn(NO3)2 + H2
2 moles of HNO3 reacts with 1 mole of Zn.
moles of zinc reacting = 0.10625/2 = 0.053125
Mass of zinc = moles × molar mass
molar mass of Zn = 65
Mass of zinc = 0.053125 × 65
mass of Zn = 3.45 g
Therefore, the mass of zinc will completely react with 125.0 mL of a solution of nitric acid (HNO3) which has concentration of 0.850M is 3.45 g
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when 57.0 g copper are reacted with silver nitrate solution, 138g of silver are obtained. what is the percent yield of silver obtained
Answer:
86.96
Explanation:
What are the reasons to determine the melting point of a sample in a melting point apparatus?.
Answer:
The determination of a melting point of a sample is a standard laboratory procedure and is relatively straight forward. It is used to identify a sample, establish its purity and determine the thermal stability of the sample.
Mrs. Vikram's science class notices that a high
pressure system bringing cold air is set to move
into their city. Currently, the weather is warm. As
the cold air enters their region, what will most
likely occur?
Storm clouds being formed will most likely occur in this scenario.
What are Storm clouds?These are formed during the process of convection in which heat and moisture is transported upward into the atmosphere.
We were told that the weather is warm and cold air will enter the region which means that it will replace the heat and moisture as they move upwards thereby resulting in the formation of storm clouds.
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If a reaction vessel initially contains an N2O4N2O4 concentration of 0. 0550 MM at 500 KK , what are the equilibrium concentrations of N2O4N2O4 and NO2NO2 at 500 KK
The concentration of NO2 is 0.054 M and that of N2O4 is 0.003 M.
Equilibrium constantThe equilibrium constant shows the extent to which reactants are converted into products.
We have the reaction; N2O4⇌2NO2 and Kp = 4.5. Setting up the ICE table, we have;
N2O4 ⇌ 2NO2
I 0. 0550 0
C -x +x
E 0. 0550 - x x
Given that;
Kp = [NO2]^2/[N2O4]
4.5= (x)^2/0. 0550 - x
4.5(0. 0550 - x) = x^2
0.2475 - 4.5x = x^2
x^2 + 4.5x - 0.2475 = 0
x=0.054 M
The concentration of the required NO2 gas at equilibrium is 0.054 M and that of N2O4 is 0.003 M.
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please help me(≧(ｴ)≦ )
Answer:
A boiled egg shows a increase in entropy
Explanation:
Denaturation of protein leads to increase in entropy.
how many particles of sodium sulfate will be produced when you use 4.523 x 10^26 particles of sodium hydroxide?
2NaOH + H2SO4 --> 2H2O + NA2SO4
*round to 4 sig figs please !
im thinking 266.25g round up to 266.3 i hope i got it right :)
What happens to Hydrogen molecules after the light reaction in photosynthesis? Hydrogen is released into the atmosphere Hydrogen bonds with Carbon Dioxide to form glucose Hydrogen bonds with Oxygen to form water.
Photosyntheis is a biochemical reaction that combines chemicals with biological species to produce energy. Atoms of hydrogen bond with carbon to form glucose.
What are the reactants and the products of the light reaction?Carbon dioxide and hydrogen are the reactants that are used from the environment by the plants to make energy. Glucose and oxygen are the products.
The hydrogen atoms from the environment are absorbed by the plants and are combined with the carbon dioxide to yield glucose or sugar molecules for energy.
Therefore, option B. hydrogen and carbon dioxide react to produce glucose.
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Li2SO4
How many Li atoms are in the formula Li2SO4?
14.
How many S atoms are in the formula Li2SO4?
15.
How many O atoms are in the formula Li2SO4?
16.
How many total atoms are in the formula Li2SO4?
Answer:
Lithium = 2
Sulphur = 1
Oxygen = 4
Total = 7
what 2 liquids chemically react to make a solid
Answer:
A precipitation reaction produces an insoluble solid as a result of the reaction of two dissolved chemicals in a solution. The insoluble solid, called a precipitate, sinks to the bottom of the solution or stays in suspension as cloudy particles.
Explanation: ur welcom
You have 30mL of hot cocoa, but it’s way too sweet. You add hot water until there’s 70mL of hot cocoa and determine that the final molarity is 2M, just the way you like it. What was the initial molarity of hot cocoa?
Answer:
edge sample answer -
Lesson Question: What is the effect of temperature on the solubility of a solid in a liquid?
Explanation:
Section 1 - Question 2
You have set up a lab investigation to illustrate the stages of the water cycle. You are using a heat lamp with three different heat settings to represent the sun and the ener
Which stage of the water cycle is affected MOST by the highest setting on the heat lamp?
A
collection
B
condensation
С
evaporation
D
precipitation
have set up a lab investigation to illustrate the stages of the water cycle. You are using a heat lamp with three different heat settings to represent the sun and the ener
Which stage of the water cycle is affected MOST by the highest setting on the heat lamp?
A
collection
B
condensation
С
evaporation
D
precipitation
What are the two entry points for electrons in the electron transport chain.
Answer:
How do electrons enter the electron transport chain?
All of the electrons that enter the transport chain come from NADH and FADH 2start subscript, 2, end subscript molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle.
Explanation:
i hope it helped u :)
Identify the elements with the following electronic configurations;
1s22s22p63s23p64s23d3
~Shoto Todoroki here~
If you are referring to a neutral atom, then Vanadium (V) has that particular electron configuration.Remember that for neutral atoms, the number of electrons must equal the atomic number. Adding up all the electrons from the given configuration will give
This means that the atom you're looking for has an atomic mass of 23, which corresponds to the atomic mass of Vanadium, a transition metal located in the fourth row, group 5 of the periodic table.
Vanadium's noble gas shorthand notation is
V:[Ar]4s23d3
hope this helps :))
PLS ANSWER ASAP!!!
A lawn fertiliser is rated as 6.00 % nitrogen, meaning 6.00 g of nitrogen (N) in 100 g of fertiliser. The nitrogen is present in the form of urea, (NH2)2CO. What mass (in grams) of urea is present in 100 g of the fertiliser to supply the rated amount of nitrogen.
Answer:
Convert 6.50 g N to g urea.
6.50 g N x (molar mass urea/2*atomic mass N) = ? g urea.
Explanation:
Consider the following generic reaction for which k = 2. 54: 3 z q ⇄ 2 x what is the value of k for the following reaction: 4 x ⇄ 6 z 2 q.
The equilibrium constant of the second reaction is 0.155.
What is equilibrium constant?The equilibrium constant is a numerical value that shows the extent to which reactants are converted into products at a given temperature.
Now, we have the reaction; 3Z + Q ⇄ 2 X and 4 X ⇄ 6 Z + 2 Q.
In the first reaction;
K =[ X]^2/[Z]^3 Q
In the second reaction;
[Z]^6 [Q]^2/[X]^4
Let [ X]^2 = A
[Z]^3 Q = B
Then the second reaction can be;
K = (B)^2/(A)^2 = (B/A)^2
The equilibrium constant of the second reaction therefore is; (1/2.54)^2
K = 0.155
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Amy is looking for a model of the relationship between limiting factors and carrying capacity.
Which would be the best model?
A. a seesaw because when limiting factors go down, the carrying capacity goes up
B. two helium balloons because when limiting factors go up, the carrying capacity goes up
Answer:
a seesaw because when limiting factors go down, the carrying capacity goes up
Explanation:
A limiting factor is the scarcest resource that limits the growth of a population, so, when limiting factors go down, that growth is no longer limited.
How much explosive ammo to get through a sheet metal door.
Answer:
Sheet Metal Door:63
Explanation:
Who is the editor in chief of The Washington Post?.
Under what conditions do real gases behave most ideally.
Answer:
Under high temperatures and low pressure, gases behave the most ideal.
Explanation:
Low pressure reduces the effect of the finite size of real particles by increasing the volume around each particle, and a high temperature gives enough kinetic energy to the particles to better overcome the attractions that exist between real particles. (Prevents sticking.)
In summary, real gases behave more like ideal gases when they are far away from a phase boundary, (condensation or freezing).
For each of the following choose the variable that will be more favorable in solution formation. A) Weak or Strong Solvent intermolecular forces B) Weak or Strong Solute intermolecular forces C) Weak or Strong Solvent-Solute intermolecular force D) Increase or Decrease in Entropy E) Increase or Decrease in Enthalpy
Based on factors affecting solution formation;
Strong solvent-solute intermolecular forces favors solution formation.Increase in entropy favours solution formationDecrease in enthalpy favours solution formationWhat is a solution?A solution is a substance formed when a substance known as solute dissolves in another substance know as solvent.
Factors that affect solution formation include:
strength of intermolecular forces between solute and solvententropyenthalpyStrong solvent-solute intermolecular forces favors solution formation.
Increase in entropy favours solution formation
Decrease in enthalpy favours solution formation.
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Which element is a liquid at 305 K and 1.0 atmosphere?
And why
Answer:
Gallium is the correct answer. Gallium melts at a few degrees higher than room temperature, which is 298K.
What is the purpose of determining the formula mass of a compound?.
Consider the reaction below. HI H2O Right arrow. H3O I– Which is an acid-conjugate base pair? HI and H2O H2O and H3O H3O and I– HI and I–.
HI and I⁻ is the acid-conjugate base pair.
What is acid and conjugate base pair?According to Bronsted-Lowry definition of acid and base, those pair which are differ in the single no. of proton or H⁺ ion is known as acid and conjugate base pair or base and conjugate acid pair.
Given chemical reaction is:
HI + H₂O → H₃O⁺ + I⁻
Here, HI = acid,
H₂O = base,
H₃O⁺ = conjugate acid and
I⁻ = conjugate base
Hence, option (d) is correct i.e. HI & I⁻ is the acid-conjugate base pair.
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Answer:
d, HI and I–
Explanation:
i copied the other guy
Consider the reaction below.
HI + H2O Right arrow. H3O+ + I–
Which is an acid-conjugate base pair?
HI and H2O
H2O and H3O+
H3O+ and I–
HI and I–
Would it be possible to completely remove all lead ions from a solution by precipitating them with chloride why or why not.
No. It will not be possible to precipitate all lead ions from a solution by precipitating them with chloride.
Precipitation reactionsWhen a chloride salt is used to precipitate lead ions from a solution, an insoluble lead chloride salt would be formed
Pb2+ + Cl- ---> PbCl2
However, the formation of PbCl2 in an aqueous medium leads to the establishment of equilibrium between dissolved ions and undissolved solids.
PbCl2 (aq) <------> Pb2+ + Cl-
Thus, it will not be possible to completely remove all the lead ions from the solution.
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draw arrows to show the path of the electricity in this series circuit
pls answer quickly as possible
Explanation:
from positive to negative terminal
There will be a flow of current from the battery through the wires to the bulbs.
What is a circuit?The term circuit speaks of a path that is designed for the flow of current. We know that current often flows from the battery to other circuit components.
It then follows that in the circuit as shown, there will be a flow of current from the battery through the wires to the bulbs.
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