Answers
Answer:distillation
Explanation:
The process represented by the diagram is chromatography.
What is chromatography?
Chromatography is a separation technique used to separate components present in a mixture.It makes use of two phases the stationary phase and mobile phase .
Stationary phase is a phase in which the mixture components to be separated is loaded. Mobile phase is a phase which is run over the stationary phase so as to enables components of mixtures to separate.
Separation of components is based on the principle that components of mixture which are soluble in mobile phase travel large distances over stationary phase while those which are insoluble or less soluble travel less distances over stationary phase.
For every component which is separated, a Rf value can be calculated which is simply ratio distance traveled by solute divided by distance traveled by solvent front.
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Related Questions
Which pair of substances would most likely result in the production of a solid when reacting with a base?
Answers
Answer:
metal salts, and carbon dioxide
Explanation:
Im literally failing some classes can some one help me with them
Answers
Answer:in can
Explanation:
Answer:
What are your subjects you need help with?
Measure of the energy
released during an
earthquake.
Answers
Answer:
The magnitude of an earthquake, usually expressed by the Richter Scale, is a measure of the amplitude of the seismic waves
Explanation: The moment magnitude of an earthquake is a measure of the amount of energy released - an amount that can be estimated from seismograph readings
How would you calculate the gravitational potential energy of a 2 kg bottle of soda falling off of a kitchen table that is 0.76 m tall ?
Answers
Answer:
14.9 Joules .
Explanation:
P. E. = m g h
= 2 * 9.8 * 0.76
= 14.9 Joules to the nearest tenth.
Answer:
2*0.76*97
Explanation:
Sara slides down a playground slide. How will friction affect her as she slides?
Answers
Answer:
Friction is a force that occurs whenever two objects rub against each other, such as a slide and a person's backside. Without friction, a slide would accelerate the rider too quickly, resulting in possible injury. Certain materials called lubricants can reduce the effects of friction. This is why water park slides are much faster than playground slides; the water acts as a lubricant. Sitting on wax paper can also reduce the amount of friction.
Explanation:
some help would be very much appreciated !!
Answers
Answer:
a = 6 m/s².
Explanation:
If we have the object with mass of 75 kg and force on it is 50 N then according to given statement its acceleration is 3m/s².
When we double the force on same object by keeping the mass constant then the acceleration will also double. It means force will be 100 N and acceleration will be 6 m/s².
But if we we increase the mass then acceleration goes to decrease.
So,
mass = 75 kg
F = 50 N
a = 3m/s² then by double the amount of force,
mass = 75 g
F = 100 n
a = 6 m/s².
This is actually explain the newton second law. This law stated that the acceleration of object is depend upon its mass and force acting on it.
F= m. a
a = F/m
Thus acceleration is directly proportional to the force and inversely proportional to the mass.
I will mark whoever gets it right most brainliest (25 point question)
What is the name of the ionic compound CaCN?
Hint: It's not Calcium Cyanamide
Answers
Answer: Calcium Cyanide?
Explanation:
which group contains most elements
Answers
Answer:
group 8 (group 0)
just take a look at the periodic table
1. How many protons?
2. What is the atomic number?
3. What element is this?
4. How many neutrons?
5. What is the mass number?
6. What is the isotope?
Answers
Answer:
1) 5 protons, 2) 5, 3) boron, 4) 6 Neutrons, 5) 10.811 ≈ 11, 6) Boron-9
Count the atoms of each element.
5(NH) P
5
10
15
20
30
40
50
60
70
Nitrogen
o
o
O
O
O
O
o
Hydrogen
O
O
O
O
Phosphorus
O
O
O
O
O
Answers
Answer:
Nitrogen = 15
Hydrogen = 60
Phosphorus = 5
Answer: uh
Explanation:
PLEASE HELP ME FAST THANKYOU! :)
What is a substance said to be if it evaporates easily?
A.crystallized
B.condensing
C.changing pigmentation
D.volatile
Answers
What are The two types of wave interference
Answers
Answer:
transverse and longitudinal
Answer:
Its constructive and destructive
Explanation:
Explanation:
i give brainliest help pls
Answers
The answer is a compound.
Hope this helps! :)
what is the scientific method?
A) the process of proving a theory
B) a way of analyzing data
C) a method of testing an idea
D) the steps required to form a hypothesis
Answers
Answer:
C- a method of testing an idea
1.04 x 10^-3 pm to mm
Answers
Answer:
1 pm = 10^-12 m = 10^-10 cm = 10^-9 mm
1.04 x 10^-3 pm = 1.04 x 10^-3 x 10^-9
= 1.04 x 10^-12 mm.
Hope it helps...
The atmospheric pressure on a mountain is 550 mmHg and 1 atm is equal to 760mmHg. What is the pressure in atm? Give your answer to 2 significant figures atm
Answers
1 atm
550 mmHg x —————- =0.72 atm
760 mmHg
***20 pts***
If you had 3.02 grams of Sodium (Na), how many moles would that be?
ANSWER W STEPS IF NOT REPORTED
Answers
Answer:
0.131 mol
Explanation:
To convert grams to moles, you need to use the molar mass. The molar mass is the mass number. You can find this on the periodic table. The molar mass of sodium is 22.990 g/mol.
(3.02 g)/(22.990 g/mol) = 0.131 mol
In the compound nickel(II) sulfide, there is always 58.7 g of nickel for every 32.1 g of sulfur. What is the simplified ratio of
nickel to sulfur?
Answers
answer: 1.83 to 1
or at least that’s what i got
If 0.243 g of magnesium is reacted with hydrochloric acid, the amount of acid required would be:
Answers
Answer
0.496g
Explanation:
All you have to do in this problem is multiply .243 g by 2.04, which is the universal shortcut for these acid problems.
You would like to find the density of an unusually shaped piece of jewelry. Since the piece of jewelry has an irregular shape, you need to use displacement to calculate the volume. In a 300 ml beaker you pour 200 ml. Of water. When you place the piece of jewelry in the beaker, the water level rises to 278 ml. Upon placing the object on the triple beam balance, you find that it weighs 122 grams. Given this information, calculate the density. SHOW YOUR WORK
Answers
Volume displaced by jewelry, V = 278 - 200 = 78 ml
Also, 1 ml = 1 cm³
We know, by water displacement method the volume of water displaced by an object it equals to its own volume.
So, volume of jewelry, V = 78 ml = 78 cm³.
Also, weight of jewelry is , w = 122 gm.
Now, we know density is given by :
[tex]d=\dfrac{w}{V}\\\\d=\dfrac{122\ gm}{78\ cm^3}\\\\d=1.56\ gm/ cm^3[/tex]
Hence, this is the required solution.
Fe(s) + O2(g) Fe3O2 (s)
Answers
Answer:
Fe2O3
Explanation:
if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged
Jack, an Investigator, wants to prove that a certain suspect was present at the crime scene when the crime was committed. What kind of
evidence should he look for?
Jack should look for __________ evidence because the analysis of such evidence can prove whether the person was present when the crime
was being committed. This evidence refers to tiny fragments of material that can be transferred from a human to a human or human to a
location
(forensic science question)
Answers
Answer: TRACE evidence
Explanation: Any evidence that can be transferred from one person to another or one person to a place is trace evidence. Also I took the test.
PLEASE ANSWER ASAP!
For her school Science ft Alyssa designs an experiment to learn more about
erosion. Her experimental set up is shown below
Using the illustration shown above, determine which of the following statements best
describes the independent variable itest variable). this experiment:
A The speed she pours the water, since it is the same for all trials.
B The amount of water she pours, because the amount she pours is the same.
C The height of the tray, because this is a change that may cause and effect on the experiment.
D The mass of sand that collects at the bottom of the tray, because this is what is being measured or observed.
Answers
Answer:A
Explanation:
To do the experiment
The experimental setup is the part of the scientific method that is done to prove the hypothesis. The test variable of the experiment is the height of the tray as it may cause an effect. Thus, option C is correct.
What is the independent variable?The independent variable has been the test variable that does not depends on other variables and is manipulated by the researcher. It has no fixed value and parameter and is subject to alteration so as to cause an effect on the other variable.
The height of the tray is the independent variable and the mass of the sand is the dependent variable. The height affects the mass of the sand eroded at the bottom. The speed and amount of water have been the controlled variable.
Therefore, option C. the height of the tray with the sand is the independent variable.
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Why do more gas bubbles mean the gold is less pure
Answers
Answer:
Most likely it decreases the quality of the gold.
Explanation:
Based on your knowledge of chemical equations, what do you know for sure
about this equation?
Pls help I need it I’m dumb but I do need it! *here a pic*
Answers
Fill in the blank.the amount which an object accelerates depends on the mass of the object on the size of the ____ acting upon it
I need help I’m struggling
Answers
Answer: Force
Explanation:
Answer:
force
Explanation:
Did you title your lab report?
Did you state the purpose of the investigation?
Did you include a brief overview of the investigation?
Materials and Procedure
Did you make a list of materials? Did you include quantities and SI units?
Did you present the steps of the procedure as a numbered list?
Did you note any changes to the original procedure?
Answers
The process shown in the image above is known as
A. neutron absorption.
B. nuclear fusion.
C. a chain reaction.
D. a redox reaction.
Answers
Answer:
C. Chain Reaction
Explanation:
You get different elements from just one by a single reaction.
how many atoms are in 4 Mg(OH)2 ?
Answers
Answer:
20 atoms
broo this is easy plz give me harder questions smh
Nakeem and his team were playing basketball in the gym, and all the basketballs were firm and bounced well. When the team went outside,
the same basketballs seemed a bit flat and would not bounce well. Which statement provides the best explanation for what happened to the
basketballs?
O A The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls increased.
B. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls increased.
OC. The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased.
OD. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls decreased.
Answers
Answer:
c
Explanation: i took the test lol
The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.
What is pressure?Pressure is defined as the force exerted perpendicularly to an object's surface measured in units of the force's distribution. In comparison to the surrounding pressure, gauge pressure is the pressure. The concept of pressure is crucial to fluid mechanics and is used to characterize a gas's energy in the ideal gas law, among many other physical uses.
The pressure law states that for a constant volume of gas in a sealed container, the temperature of a gas is directly proportional to its pressure. This is easily understood by picturing how the gas particles in the container move more energetically as the temperature rises.
Thus, the temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.
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