8.
In our experiment that will compare how long it will take for 100 ml distilled water to evaporate from a from a 5" diameter container. This will be the control group. For the experiment group, we will use 100 ml of distilled water and dissolve 10 grams of table salt in the water. We will use the same diameter dish for both samples so the same amount of water surface is exposed to the air.
What would a good hypothesis be?
When the salt water was almost evaporated, the higher concentration of salt might have slowed the evaporation process by blocking the air from the moisture.
We think that a pure water sample will dissolve faster than a salt water solution because salt adds more mass to equal quantities of liquids.
It took a total of 31hrs. 15 min. to evaporate the pure water and 32hrs. 10 min for the salt water.
We poured the water into each 5" dish and set the containers on a table. We noted the time: 8:00 a.m. Saturday.
Answers
Answer:The answer is C: How long does it take distilled water to evaporate from a 5” diameter container?
Explanation:
In the air, a salt solution will evaporate more slowly than pure water.
What is Evaporation?
The process by which a liquid transforms into a gas state is called evaporation. A surface phenomena, that is. The amount of evaporation depends on the humidity. If the air is humid, it is virtually saturated, which means that evaporation will occur at a much slower rate.
Since evaporation takes place on the liquid's surface, the salt molecules that are present on the water's surface prevent as much water from evaporating. As a result, salt water evaporates more slowly than pure water.
As a result, the salt solution will evaporate from the air more slowly than pure water.
To learn more about evaporation
https://brainly.com/question/28698392
#SPJ1
Related Questions
A student wants to know how the number of geese in a study area affects the number of parts in their songs. She performs an experiment and records the data in a table.
Which two terms describe this type of data?
A.
Quantitative
B.
Empirical
C.
Theoretical
D.
Qualitative
Answers
The two terms that describe this type of data are Quantitative and Qualitative. Therefore, the correct options are A and D.
Data that can be measured and expressed numerically, denoting quantities or amounts, is called quantitative data. In this example, the number of geese is counted and correlated with the number of pieces in their symphony. Instead of being numerical, descriptive and categorical data are called qualitative data. In this example, it is observed and noted how many sections are in the swan songs (descriptive categories).
Therefore, the correct options are A and D.
Learn more about Qualitative data, here:
https://brainly.com/question/1417786
#SPJ3
What are the three essential theories in Earth science?
Answers
Answer:
Three essential theories for Earth Science are the theory of evolution, the theory of plate tectonics, and the theory that human activities are altering Earth's climate
Explanation:
Three essential theories for Earth Science are the theory of evolution, the theory of plate tectonics, and the theory that human activities are altering Earth's climate
The reaction below shows the process of cellular respiration, which is occurring constantly in the cells in your body:
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Describe how you would determine whether or not this reaction is endothermic.
Answers
Answer:
A process in which chemical energy (glucose) is converted into energy currency ... ATP is energy currency and it powers all functions and activities of the cell. ... The products of cellular respiration are the reactants of photosynthesis and the ... A response/action that we choose to do to help our body cope with a stimulus. b.
Explanation:
Please Help? I want the correct answers...
Earth Science
Origins of the Universe Quick Check
-------------------------------------------------------------------------------------
Which describes nuclear fusion? (1 point)
A - starts when two atoms slam together, causing the larger atom to split into two smaller atoms
B - starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
C - starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
D - starts when two atoms slam together to form one, heavier atom
Which describes nuclear fission? (1 point)
A - starts when two atoms slam together, causing the larger atom to split into two smaller atoms
B - starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
C - starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
D - starts when two atoms slam together to form one, heavier atom
What does the evidence supporting the Big Bang theory assume about the universe when it began? Select the two correct answers. (1 point)
A - It was composed of ice.
B - It was very tiny.
C - It was contracting
D - It was extremely hot.
Answers
Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation?
Answers
Answer: The balanced equation will be
6H2 + N2 → 2NH3
Explanation:
First step is to balance nitrogen
ie, H2 + N2 → 2NH3
Second step is to balance hydrogen accordingly
ie, 6H2 + N2 → 2NH3
This is the perfect balanced equation.
Answer:
c
Explanation:
c
Do you think rayon when burnt will stick to the body like other synthetic fibers?
Answers
How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
What is NOT true about genes and chromosomes?
Genese are located on chromosomes
Chromosomes are in the nucleus
A single chromosome can contain hundreds of genes
All of these are true
Answers
Let us go option by option :
1) Genes are located in chromosomes. TRUE
Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.
2) Chromosomes are the in nucleus.
TRUE
Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.
3) A single Chromosome can contain hundreds of genes.
TRUE
single Chromosome can contain hundreds of tgenes.
4) All of the above
TRUE
As all the statements above are true. The correct option is 4.
Answer:
all of them are true
Explanation:
this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true
no problem
PLEEASEE HELP ITS PAST DUE AND IM GIVING BRAINLIEST
Which process is an example of a physical change?
a. wood burning in a camp fire
b. iron rusting on a bicycle chain
c. ice melting after a snow storm
d. milk souring because it is old
Answers
Answer:
c or d
Explanation:
i dont know which one but it's one of those
Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"
Which best describes why a scientist would ask a different question than this one?
O The question asks about subjective personal preferences regarding energy.
O The question focuses on the objective measurements of amounts of energy.
O The question has too wide of a focus, as though all situations can be studied at once.
O The question is focused on the future and finding new answers about changing needs.
Answers
Answer:
C
Explanation:
scientists usually focus on one specific problem, rather than a whole range. so the answer would be that it's too wide a focus.
btw this is where the crown is on the bottom of the question
Answer:
c
Explanation:
Please draw a diagram of how a magnetic field works around a magnet. Please label.
Answers
Mark me Brainly
**Suppose a cart is being pushed by a certain net force. If the net force is doubled, by how much does the acceleration change? Explain.
NO WORK = NO CREDIT = REPORT
thx <3
Answers
Can someone give me an anology on a cave please? And Mars lol. They dont have to be nothing special just a little sentence thank you.
Answers
Answer:
Explanation:
Mars is the fourth planet from the sun. Mars is more than 142 million miles from the Sun. A day on Mars is 24.6 hours. A year on Mars is 687 Earth days.
An electron in a hydrogen atom moves from level 3 to level1. In a second hydrogen atom, an electron drops from level 2 to 1 . Which statement describes the most likely result
Answers
Answer:
In a second hydrogen atom, an electron drops from level 2 to 1 .
Scientists have discovered a colony of potential organisms on the Planet Moby and named them "Maxoids." Read the information below that scientists have gathered on Maxoids and decide whether Maxoids are living or nonliving things. Explain how you came to this conclusion.
Through testing and observation, scientists have recorded the following characteristics of Maxoids. Maxoids reproduce via sexual reproduction. One parent carries the Maxoid eggs for 12 weeks before they hatch. After hatching, juvenile Maxoids continue to grow for seven months. To acquire energy for growth, Maxoids consume a peculiar liquid substance native to the planet Moby. The Maxoids' cells use this energy, as well as large amounts of water, to carry out important functions. The Maxoids are sensitive to changes in internal temperature. Sometimes they dig holes and lay in them to cool down if they get too warm.
Answers
The Maxoids are living things because they possess the characteristics of living things.
What are living things?Living things are things which have life in them.
Living things are identified by the characteristics which make them living.
The characteristics of living things include:
Movement - living things are able to move all or parts of their bodyRespiration - living things are able to break down food substances to produce energyNutrition - living things are able to take in food substancesIrritability - living things are able to respond to changes around themGrowth - living things are able to increase in size and massExcretion - living things are able to remove waste substances from their bodiesReproduction - living things are able to produce new ones of their kindConsidering the Maxoids;
They are able to reproduceThey take food in the form of a liquid substanceThey are sensitive to changes in internal temperatureIn conclusion, the Maxoids are living things.
Learn more about characteristics of living things at: https://brainly.com/question/280237
#SPJ1
When a warm air mass is caught between two cooler air masses and the thicker cold air masses move underneath the thinner warm air mass and push it upward is what type of weather front?
Answers
Explain how potential and/or kinetic energy are working in each of the pictures below
Answers
Answer: canetic carts
Explanation:
In the second one, it begins with potential energy, until the person is put into a falling motion, transferring to kinetic energy.
In the third one, there is potential energy, because the bow string is taut, and ready to release and allow the arrow to go flying.
In the fourth one, the car has gas which is potential energy, until it begins moving and is turned into kinetic energy.
Danny is trying to figure out how fast sugar crystals can dissolve in water. He has already tested crystals of table sugar by just pouring packets of sugar into a bowl of room-temperature water.
Which should Danny try next if he wants to make the sugar dissolve slower?
A.
stir the water
B.
use larger crystals
C.
heat the water
D.
all of these
Answers
Answer:
B
Explanation:
Explanation : say you have a chunk of Ice if it’s a small piece it will most likely dissolve within 2-7mins depending on the size but if it’s a bigger piece it will probably take 15-30 mins depending on the size
help
Nicole has 2 glasses on the counter: one of water and one of sugar-water. She is baking a cake and needs to use the sugar-water for the glaze. Both glasses look identical, but one contains a mixture and the other contains a compound.
Is sugar-water a mixture or a compound? Define mixtures and compounds, and explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.
Answers
Answer:
sugar-water is a mixture not a compound.(homogeneous mixture.)
Explanation:
Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.
The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)
Answer: Nicole can take a small amount of sample from both of the glasses, she can place the samples in two separate containers and leave them out in the sun, so that the water gets evaporated. One of the two containers will contain a residue of sugar. The one containing the sugar residue, is the sugar-water solution.
A small gap is left between the rails in the railway track. Analyze the reason.
Answers
Answer:
There could be several possible reasons for a small gap between rails on a railway track, such as:
1. Expansion joints: Railways are designed to allow the tracks to expand and contract with changes in temperature. To accommodate this expansion, small gaps are left between the rail ends and filled with expansion joints or plates.
2. Wear and tear: Over time, the rails may experience wear and tear due to heavy loads, weather conditions, and other factors. As a result, small gaps can appear between the rails.
3. Maintenance: During maintenance activities, rail tracks may be adjusted or replaced, which could lead to small gaps between the rails.
4. Environmental factors: Environmental factors such as soil shifts, earthquakes or other natural disasters can also affect the alignment of the rails, leading to small gaps.
These are some of the possible reasons for a small gap between the rails on a railway track.
Answer:
The small gap left between the rails in a railway track is intentional and serves a specific purpose. This gap is known as the rail joint, and it allows for the expansion and contraction of the rails due to changes in temperature. When the temperature changes, the metal rails will expand or contract, and if they were joined together tightly, they could buckle or become deformed, which could be dangerous for trains passing over them. The rail joint allows the rails to move slightly and prevent damage to the track.
Additionally, the rail joint also allows for maintenance and repairs of the track. If there were no gap between the rails, it would be challenging to replace a damaged rail or perform routine maintenance, such as tightening bolts or lubricating joints. With the rail joint, maintenance personnel can easily access and work on the track.
Overall, the small gap left between the rails in a railway track is intentional and serves a crucial function in ensuring the safety and reliability of the track.
HEEEELP!!! THIS IS DUE TODAY
What is one of the most important forms of energy? Give two examples of how this type of energy is used in our lives.
Answers
Refrigeration used electrical energy.
Answer:
"There is no God but Allah, and Muhammad is his messenger." This is the basic statement of the Islamic faith: anyone who cannot recite this wholeheartedly is not a Muslim. When a Muslim recites this they proclaim: That Allah is the only God, and that Muhammad is his prophet.
I hope u find the right path
Explanation:
100 POINTS+BRAINLIEST: How exactly do chlorofluorocarbons harm the ozone layer?
Answers
Answer:Gaseous CFCs can deplete the ozone layer when they rise due to ultraviolet radiation
Explanation:
Answer:
when chlorofloroucarbon drift upwards toward the stratospher ,they come in contact with the ozone layer .this leads to a chemical reaction where the cfcs the molecules are broken up by ultra violent radiation releasing chlorine atoms which are able to destroy ozone molecules
8.
A sheep owner is caring for a sick lamb that has a severe navel infection. He gives the
lamb 2 cc of Ampicillin 4 times a day for three days. If each cc contains 125 mg of Ampicillin what is
the total number of mg of Ampicillin given to the lamb?
Answers
Answer:
900 mg
Explanation:
Please help, I don't get what does this means
3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate:
Answers
Answer: hydrogen-carbonate.
Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.
I hope everyone finds this helpful
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
What happens to the atoms that make up hydrogen fuel as it burns?
Answers
Answer:
When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.
Explanation:
I just need answers please!!
1. Groups of organs work together to form _________________.
2.What is the lowest level of organization in a multicellular organism?
4.Which body systems work with the digestive system to get nutrients to the rest of the body?
Answers
Answer:
Now i can add a real answer
Explanation:
1: if you think about it you are made up of organs. and then other people will describe yoou as an organism Answer is organism
2:Smallest to biggest= cell-tissue-organ-organism
4:Circulatory/Cardiovascular System through the blood to most parts of the body provides nutrients and oxygen which is needed for our bodies to have ENERGY!
Citation= https://www.joliet86.org/assets/1/6/BODYSYSTEMNotes.pdf
Relate dark matter to the development of the universe after the Big Bang. In 3-5 sentences, speculate on how the development of the universe would have been different if there had been no dark matter. In your answer, use the term structures.
Please answer
Answers
Answer:
Dark matter makes up 85% of the mass of the universe. Dark matter is not directly observable because it doesn't interact with any electromagnetic wave. In the development of the universe, without dark matter, the universe will not function, move or rotate as it does now (this speculation led to the quest to find the anomaly of mass and energy in the known universe, eventually leading to the idealization of dark matter) and will not have enough gravitational force to hold it together. After the big bang, the presence of dark matter and energy ensured that the newly formed universe didn't just float away, rather, it provided enough gravitational force to hold the universe while still allowing it to expand sufficiently.
The development of the universe would have been different without the universe in the sense that the young universe won't have enough mass to hold it together, and the universe would have simply floated apart. The behavior of the universe would have been different from what we observe now, and some physical laws that applies now will not apply to the universe.
Without dark matter, the universe will neither move, rotate, or be able to function.
It should be noted that dark matter makes up about 85% of the mass of the universe. Dark matter does not interact with an electromagnetic wave.
Without dark matter, the universe will neither move, rotate, or be able to function. After the big bang, the dark matter was vital in providing the gravitational force to hold the universe.
Read related link on:
https://brainly.com/question/23120098
Compared to other stars we observe, the Sun appears bigger and brighter because:
A. It is visible at night
B. It is much closer to Earth
C. It has more mass
D. It is older
Answers
Answer:
Compared to other stars we observe, the Sun appears bigger and brighter because it is much closer to earth.
Objects closer to earth appear to be much bigger and brighter.
Let me know if this helps!
Answer:
B
Explanation:
The Sun is 93 million miles away. Other stars are light-years away. With this in mind, we orbit the sun, meaning that we are close enough to be within its gravitational field.
Hope this helps. Have a nice day.