Answer:
The procedure is Filtration
Explanation:
Filtration is a process that is use to separate insoluble solid from liquid for example Salt and water.
This process uses filter paper which is placed inside a funnel and then placed inside a beaker.
The mixture of sand and water is poured into the the filter paper and water then drains out down to the funnel and the beaker.
The solid part remain at the filter paper and it is called the residue and the water is the filtrate.
explain what you think what happen to rubber if too manyn cross limks are formed.
Answer:
The rubber becomes brittle and can break in your hand. The explanation for why this happens concerns cross-linking bonds. Ultra-violet light from the sun provides the polymer molecules with the activation energy they need to be able to form more cross-links with other chains.
Mary discovered that the cell membrane of a bacteria acts like a fence because it keeps some things in and other things out.
A. Observation
B. Analogy
C. Inference
Mary walked into her room where her little son was playing, found a broken window, and thought immediately that her son had broken it.
A. Observation
B. Analogy
C. Inference
Mary noticed that her counter top was warm to the touch.
A. Observation
B. Analogy
C. Inference
Mary noticed that the side walk was wet and thought that it may have been that the sprinklers had been on recently.
A. Observation
B. Analogy
C. Inference
Mary counted and recorded 20 heart beats in 10 seconds.
A. Observation
B. Analogy
C. Inference
The lecturer compared the human eye to a camera lens.
A. Observation
B. Analogy
C. Inference
Answer:
1. B
2. C
3. A
4. C
5. A
6. B
Explanation:
An analogy can be defined as a cognitive process which typically involves comparing things having similar characteristics or features for the purpose of explanation or clarification. An observation can be defined as a process which typically involves carefully monitoring something for the purpose of understanding and clarity. An inference can be defined as a cognitive process which involves reaching a conclusion or forming an opinion based on sets of evidence or reasoning.1. Mary discovered that the cell membrane of a bacteria acts like a fence because it keeps some things in and other things out: this is an analogy because there's a comparison between the cell of a bacteria and a fence.
2. Mary walked into her room where her little son was playing, found a broken window, and thought immediately that her son had broken it: this is an inference because she immediately thought her son broke it.
3. Mary noticed that her counter top was warm to the touch: this is an observation which was based on an evidence of touch.
4. Mary noticed that the side walk was wet and thought that it may have been that the sprinklers had been on recently: this is an inference because it was based on her thoughts.
5. Mary counted and recorded 20 heart beats in 10 seconds: this is an observation because she actually counted her heart beats.
6. The lecturer compared the human eye to a camera lens: this is an analogy because it was a comparison between a human eye and a camera lens.
Check all of the pure substances
below
Water
Oxygen
Salt Water
Solid gold ring
Mud (dirt and water)
Shampoo
What is a possible reason that ecosystem 2 has fewer species than ecosystem 1?
it doesn't repopulate as fast because ecosystem 2 could have more trouble reproducing then ecosystem 1.
If measurements are made, then they are more precise on a larger scale.?
Answer:
No.
Explanation:
According to the formula б/X=б/√n, as more measurements are made, the uncertainty gets smaller.
7. Compared with our'Sun, the star Belelgeuse is
smaller, hotter, and less luminous
smaller, cooler, and more luminous
larger, hotter, and less lumulous
larger, cooler, and more luminous
Answer:
Larger, cooler, and more luminous.
Betelgeuse is red in color, and that means that the surface of it is cooler than the sun (bluish white is hottest, and red is lowest). It is also common knowledge that it is larger, so the correct option would be D. Hope this helped :)
Why do we research
before conducting our
experiment?
Without doing research before doing an experiment you’d be at risk, example: Chemical reactions that COULD cause chemicals burning through human skin, or setting off an harmful explosion by mixing unknown chemicals together.
When we have stomach disorder, we take antacid to solve the problem. How does it help? Support your answer with an equation.
Answer:
its help us
equation- ( a)2+(b)2+2an
How many grams are in 0.500 mol of Na (molar mass of Na = 22.99 g/mol)?
Answer:
11.495 grams
Explanation:
Write the orbital notation for element 53.
Answer:
Its complete electron configuration is 1s22s22p63s23p64s23d104p65s24d105p5.
Explanation:
pls help me i have to turn this in in less than 15 min.
Answer:
Last one
Explanation:
Answer:
Boiling point!
Explanation:
Distilled water is capable of being heated beyond the normal boiling point due to absence of dissolved impurities which provide nucleating points at the normal boiling point.
If you enjoyed my answer, I'd appreicate a Thanks and a rating!
Have a great day!
Analysis- How could you determine whether an unknown clear liquid is pure water or
salt water? Remember that you should never taste any substance of unknown identity. Use at least 4 sentences respond
Answer:
Boiling the subtance
Explanation:
To determine the nature of an unknown liquid the first thing you can do is boil it:
* If the sample is water, the boiling point must be near to 100°C
*When all pure water is evaporated, there is no residue, the glass must be empty.
* But if the sample is salt water, when all water is evaporated, you will see a solid white residue that, possibly, is salt.
Which of the following describes an irregular galaxy?
A.) A round football shaped disk
B.) A disk with spiraling arms around it
C.) An oval disk
D.) A random group of stars and no shape
Answer:
D
Explanation:
They don't have define shape nor structure...so a random group of stars and no shape can form a irregular galaxy
Summarize the meaning of the term activation energy.
Answer:
Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
Explanation:
A 5.0-L sample of sulfur hexafluoride (SF6) is stored at a temperature of 250.0 K and a pressure of 67.0 Pa. If the pressure is decreased to 60.0 Pa, what will the new temperature be?
Answer:279.1 K
Explanation:
You'll be using Gay-Lussac's Law for this. P1/T1=P2/T2
I have a class for this, and one of the practice questions was formatted this way, so I used that format and substituted said numbers as needed
P1:67 Pa
P2:60 Pa
T1:250 K
T2:?
I really hope this helps!
How can two objects of different masses have the same temperature but different amounts of thermal energy?
3. An object has a mass of 20.0 grams and a volume of 5.0 cubic centimeters. Give the
density
density= mass/ volume
d= 20/5
d= 4 g/cm^3
What is the main type of energy in an iphone charging cable?
Answer:
replace its predecessor, the 30-pin dock connector, the Lightning connector is used to connect Apple mobile devices like iPhones, iPads, and iPods to host computers, external monitors, cameras, USB battery chargers, and other peripherals.
PLEASE HELPPPPP I WULL MARK BRAINLEIST
Answer:
the answer is: 10
Explanation:
To find density you do mass divided by volume
What are chemical sedimentary rocks formed from?
Answer:
Elements in fluids.
Explanation: They're formed from elements crystalizing in fluids (Like water.) For example limestone forms on the bottom of the ocean from calcium.
Answer:
The precipitation of ions in solution
Explanation:
Is the discharging of a battery producing electricity an Intramolecular force or Intermolecular force?
Answer:
I think its intermolecular
Explanation:
I'm sorry if it is wrong
Answer:
intermolecular forces
Explanation:
what is the process called when the moon begins to fade from a full moon to a new moon
Answer:
It's called moon phase
Explanation:
hope this helps
24 Points!! 12 Points Each Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
Answer:
14. C , 15. C. 16. B , 17. D They are all right
Explanation:
Which six elements are generally considered metalloids
Answer:
boron, silicon, germanium, arsenic, antimony, and tellurium
We use the Scientific method to minimize human error in experiments.
OS
OO
True
False
Answer:
false false false false false
The following data was collected: 5.5 m; 5.3 m; 5.4 m. The actual length is 5.4 m. What is the accuracy and precision for this set of measurements?
Answer:
The measurement is precise and accurate
Explanation:
The accuracy of a measurement of length is often indicated by how "precisely" the length measurement can be read depending on the type of measuring instrument used scale.
Looking at the measurement, we can see that the values lie between ±0.1 from the expected values hence it is accurate.
Also, the values differ from each other by ±0.1 hence it the measurements are precise.
Answer:
Accuracy:
5.5 = 98.15%
5.3 = 98.15%
5.4 = 100 %
Precision:
5.5 ± 0.14
5.3 ± 0.14
5.4 ± 0.14
Explanation:
Accuracy is determined using; 100% - % error
% error = absolute error/actual value * 100%
5.5 - 5.4/5.4 * 100% = 1.85%
accuracy = 100 % - 1.85 % = 98.15%
5.3 - 5.4/5.4 * 100 5 = 1.85%
accuracy = 100 % - 1.85 % = 98.15%
5.4 - 5.4/5.4 * 100 % = 0 %
accuracy = 100 % - 0% = 100%
Precision is determined by obtaining the standard deviation of the mean;
s = √{∑(|x - m|)²/(n - 1)}
where x is the value, m is mean of values , n is number of values
mean = (5.5 + 5.3 + 5.4) / 3 = 5.4
deviations from mean, (x - m) are as follows;
|5.5 - 5.4| = 0.1
|5.3 - 5.4| = 0.1
|5.4 - 5.4| = 0
∑(x - m)² = (0.1 + 0.1 + 0) ²= (0.2)² = 0.04
(n - 1) = 3 - 1 = 2
s = √(0.04/2)
s = ± 0.14
Therefore, the precision of each measurement is as follows;
5.5 ± 0.14
5.3 ± 0.14
5.4 ± 0.14
Make a claim describing the relationship between Force and charge.
Answer:
According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges
A steel cylinder contains a glass jar of sodium metal surrounded by water. All together the cylinder and its contents weigh 1000g. The cylinder is dropped which breaks the glass and shortly after popping sound is heard. Since the steel container did not break, we can assume that... *
Answer:
A steel cylinder contains a glass jar of sodium metal surrounded by water. All together the cylinder and its contents weigh 1000g. The cylinder is dropped which breaks the glass and shortly after popping sound is heard. Since the steel container did not break, we can assume that... *
Explanation:
stays the same the mass and stuff dosnt change.
What is the chemical name for Se2CI
Answer: caesium oxide
Explanation:I think sorry if I’m wrong
What is the energy of a 3.12 x 10^18 s-1 wave?
A. 4.75 x 10 ^42 J
B. 5.74 x 10^-7 J
C. 2.07 x 10 ^15 J
D. 8.6 x 10 ^ 4 J
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The energy of wave is 2.08×10⁻¹⁵J.
What is electromagnetic wave?
Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave .There is a relation between energy of wave. frequency of wave
Mathematically,
E=hv
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
v= frequency of wave
substituting the given values
E= 6.67×10⁻³⁴js×3.12 x 10¹⁸ s⁻¹
E= 2.08×10⁻¹⁵J
Therefore the energy of wave is 2.08×10⁻¹⁵J.
To know more about electromagnetic wave, here:
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