what is the purpose of having distilled water as one of your test substances?

Answers

Answer 1
Distilled water has no impurities; hence it eliminates the sources of any contamination and gives accuracy to an experiment. Distilled water is also used to know if actually a chemical reaction takes place or not.
Answer 2

Distilled water does not have any cellular or mineral contamination. It is used in experiments for accurate results.

What is distilled water?

It is a type of water that is completely purified of any kind of impurities. It does not have any minerals, salts, or organic materials.

Distilled water is the liquefied stream. When the water is boiling, it turns into a stream. This is collected and the steam is turned back to liquid. The steam doesn't carry an impurity of water with it and so distilled water formed from steam is also devoid of any impurities.

Distilled water is safe to drink but it will not taste anything like regular water. The water in our homes is supplied with minerals. These minerals are required for various processes in our body. Distilled water doesn't have any such minerals. Hence it's safe to drink but it's not beneficial.

Therefore, distilled water is used in experiments as there is no chance of contamination or reaction with this. This is used as a control against the test substances.

Read more about distilled water, here

https://brainly.com/question/25759450

#SPJ2


Related Questions

Psychology is considered as what
type of science?
A. Medical
B. Historical
C. Social

Answers

Answer:

social

Explanation:

hope this helps!

Mr. Wang works in a recycling center. Recyclable materials arrive at the
center mixed together. Workers use magnets to separate steel cans from
other items. Which two statements are true about the force between a steel can and a magnet?
1 Gravity pushes the can toward the magnet.
2 The force between the can and the magnet is a noncontact force.
3 The attraction between the can and the magnet is a pull.
4 The attraction between the can and the magnet is a push.

Answers

Answer: The answer is number 2 and number C

Explanation: BECAUSE

The attraction between the can and the magnet is a pull is true statement about the force between a steel can and a magnet. Thus option 3 is correct.

What is force ?

Force can be defined as an interaction which can change the motion of an unopposed object, it is the push or pull mechanism experienced by any object, a vector quantity, so it has both magnitude and direction.

Force can be up two types such as Contact Force can be applied to the objects by bringing them into contact, three subtypes of contact force are Frictional force, Applied force, Normal force.

Non-Contact Force applied to the body without any contact, for example Gravitational force. The SI power unit of force is the Newton(N).

When the force increases,  the speed of a moving object or stationary object is also increased, the effect of force can also change the direction, shape and size of the object.

Learn more about controllable force , here:

https://brainly.com/question/14317715

#SPJ2

The apple maggot is a pest of hawthorn plants and apple trees. Before the introduction of apple trees 200 years ago, apple maggot flies laid their eggs only on hawthorns. After the introduction of apple trees, these flies started to lay eggs in apples or hawthorns. These flies tend to live and reproduce in the type of plants they were born in. Therefore, hawthorn flies tend to mate with other hawthorn flies and apple flies tend to mate with other apple flies. Some genetic differences are currently found between these two groups of flies. If these flies become different species in the future, this will be an example of what

Answers

Answer:

It is an example of the evolution of species, the adaptation of the fittest as mentioned by Charles Darwin when analyzing the Galapagos Island.

Explanation:

We call this process where the fittest evolve and the least adaptive die out, we call natural selection.

What is the maximum number of individuals who could be represented by these bones? Explain your answer. (Hint: Assume every bone in the collection could be from a different person.)

Answers

Osteologists determine the maximum number of individuals based on the total number of pieces found in the remains. In the exposed example, the maximum number of individuals represented by these bones is 22.

-------------------------------------------------------

There is a protocol to follow when finding bones together or close to each other.

1)   Bone's identification. To know which bone each of the pieces represents.

2)   Classification of the bone's origin to know if bones belong to an animal or a human being.

3)   Then the potential number of individuals found should be estimated. This step is one of the most significant ones for osteologists: determine the number of individuals found.

The minimum number of individuals the remains representThe maximum number of individuals the remains represent

Bones might represent as many individuals as pieces there are. Or as many individuals as pieces can form by assembling them.

For instance, if a right femur and a right tibia are found together, the minimal number of individuals is one -because they could belong to the same person-, and the maximum number is two -because each of the bones could belong to a different person-.

Bone's characteristics such as sizes, bilateral traits, staining properties, articular matching, among others, are significant when trying to assembly an individual. However, these clues are not definitive.

Previous data can also be helpful when determining the number of individuals represented by these bones. Knowing the number of dead individuals in this place, ages, sexes, races, etcetera, can make the determination easier.

The most defining analysis to be performed when possible is DNI. A more confident determination on the number of individuals can be done by performing DNI analysis.

In the exposed situation there are 22 pieces, identified as follows

3 skulls6 femurs → 4 of them are right femurs2 right humerus 2 left tibia 4 hip bones → 3 left and 1 right5 scapula → 3 right and 2 left

According to this information, the first assumption should be that each piece of bone represents one single individual.

So, if there are 22 pieces, they might be representing 22 different individuals. This is the maximum number of individuals there might be present.

Since there are four right femurs, we could assume a minimum number of 4 individuals represented by these bones.

------------------------------------------------

Related link: https://brainly.com/question/22401870?referrer=searchResults

                     https://brainly.com/question/13403950?referrer=searchResults

What criteria is used to divide the
earth into layers?
A. Each layer is 10 miles thick.
B. Each layer is 100 miles thick.
C. The age of the rock is determined.
D. It is based on physical and chemical properties.

Answers

C, the age of the rock


please helps .-.
which of these events had at LEAST effect on the history of life on earth?




A. Global climate change

B. Mountain building

C. Changes to the genetic code

D. Meteor or asteroid impacts​

Answers

the answer would be

B- mountain building

hope this helps have a good day :)
mountain building is correct .

1. What cell structures did you place in the plant cell that you did not place in the animal cell?

Answers

The plastids, chloroplasts and the cell wall is present in the plant cell but is not present in the animal cell.

What is the difference between plant and animal cells?

The difference between plant and animal cell is the presence of certain organelles that is present in one cell and absent in another cell. Plants' cell have a cell wall, along with chloroplast and other specialized plastids, and a large central vacuole, which is not commonly found in animal cells. The cell wall is surrounded by a rigid covering that protects the cells also provides structural support and gives shape to the cell. Chloroplast is present in the plant cell but is not present in the animal cell. The purpose of the chloroplast is to make sugar. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars.  The cell walls, plastids, and chloroplasts are present in the plant cell but are not present in the animal cell.

So we can conclude that the chloroplast is present in the cell of the plant but is not present in the cell of the animal.

Learn more about Plant Cell here: https://brainly.com/question/913732

#SPJ1

why did the chicken cross the road​

Answers

Answer:

to get to the other side

Explanation:

why the fk else would the chicken cross the road

to get to the other side. obviously

Why doesn’t the water heat up as much as the brick?

Answers

Answer:

Water is not a conductor of heat

Explanation:

Which material undergoes radioactive decay?

Answers

A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.

A material undergoes radioactive decay if it has an atom with unequal number of protons and neutrons.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2

In the equation, C6H12O6 is a

Answers

Answer:

Glucose

Explanation:

Identify at least two limitations of Makennas model

Answers

Answer:Both legal and moral theorists have offered broadly “communicative” theories of criminal and moral responsibility.

Explanation:Mabey

Oxygen was added to early earth’s atmosphere through

Answers

Answer:

Hey There!!

You can say that...

Oxygen was added to early earth’s atmosphere through PHOTOSYNTHESIS!

Explanation:

The introduction of organisms which respired with the Sunlight and CO2 through PHOTOSYNTHESIS had brought a change in the Earth's early atmosphere...

PHOTOSYNTHESIS produces OXYGEN as a waste product (it's not needed by the organism)

This Oxygen is then released into the atmosphere where it was either converted into OZONE or left to move around the rest of he atmosphere...

I HOPE THIS HELPS WITH YOUR WORK!

:D

a. How many times its own weight did the moss absorb?
b. How does this compare with the paper towel?
c. Why is Sphagnum often used to ship items that must be kept moist?

Answers

Answer:

The correct answer is :

1. many times

2. absorbs more than paper towels.

3. It absorbs any extra water that is around.

Explanation:

mosses are non-vascular plants in the land plant division Bryophyta. They are little herbaceous plants that retain water and other nutrients with the help of their leaves and uses carbon dioxide and daylight to make food by photosynthesis.  The sphagnum cells are very thin wall cells with enormous depressions or cavities which is uses as is to retain and ship water

Thus, the correct answer is :

1. many times

2. absorbs more than paper towels.

3. It absorbs any extra water that is around.

List 4 different ways microorganisms affect our daily lives.

Answers

1. Boost our immune system
2. Protect us from auto immune diseases
3. Detoxify us and can fight off stress
4. Keep babies healthy

Fossil fuels are formed when organic materials decompose and sendiments are deposited on top of them.This process of sediments accumulation over time leads to________of the sediments.

Answers

Oil

Explanation:

The process of sediment accumulation over time leads to Oil

Why is a compass important to marine science?

Answers

Answer:

( in the explanation )

Explanation:

The magnetic compass was an important advance in navigation because it allowed mariners to determine their direction even if clouds obscured their usual astronomical cues such as the North Star. It uses a magnetic needle that can turn freely so that it always points to the north pole of the Earth's magnetic field.

Who is the hottest girl in the world

Answers

Answer:

most definitely not you

Explanation:

everyone is equally beautiful.

Whoopi Goldberg is the hottest chick I have ever seen! Have you seen those eyebrows, cause I haven’t.

**ENVIRONMENTAL SCIENCE QUESTION** If an area is expected to double in population, how can we apply environmental science to the solution of the problem which is, if we have more population, we would need more buildings (homes, schools, stores, etc), which would then interfere with the removal of habitats. How would we apply environmental science to try and create a solution to stop that?

Answers

Answer:

no idea

Explanation:

need points

During tubular secretion, fluid moves where:______.

Answers

Answer:

Renal tubular lumen

Explanation:

Tubular secretion is the process where fluid are moved are transfer from the peritubular capillaries to the renal tubular lumen of the kidney by the process of active transport and diffusion. It is the opposite of reabsorption and few substances are secreted in the nephron. Urine is left at reabsorption and secretion has taken place in the nephron.

Which is located inside the lung?
O the larynx
O the pharynx
O the trachea
O the alveoli

1 answer choice

Answers

Answer:

d is the answer

Explanation:

there you go have a good day

Within the lung are the alveoli. The larynx, sometimes known as the voice box, contains your vocal chords. The inhaling & exhalation of air supplied results in voice sounds.

What are the lungs used for?

Respiration, a process of gas exchange, is the major purpose of the lungs (or breathing). In the process of respiration, dioxide, a waste material of metabolism, exits the blood and oxygen from the incoming air enters. Decreased lung function refers to the lungs' diminished mental capacity to transfer gases.

Do your lungs ever ache?

Since the lungs lack pain receptors, it's not the lungs itself that hurt when someone suffers painful respiration. But illnesses that impact the heart, kidneys, joints, and muscles

To learn more about: Lungs

Ref: https://brainly.com/question/19135226

#SPJ2

An experiment is conducted in which the height of the ramp is changed and the speed of the skateboard down the ramp is measured. Which of the following correctly describes the speed of the skateboard down the ramp in this experiment?

Select one:
a. The manipulable (independent) variable
b. A constant
c. The responding (dependent) variable
d. A standard of comparison

Answers

Answer:

The responding (dependent) variable

Explanation:

In an experiment, one of the variables is either changed/maipulated or measured. The variable that is deliberately changed is called the INDEPENDENT VARIABLE while the variable that responds to the changes made to the independent variable, or is being measured is called DEPENDENT VARIABLE.

Hence, in the experiment involving the height of the ramp and the speed of the skateboard, the SPEED OF THE SKATEBOARD IS THE DEPENDENT/RESPONDING VARIABLE because it is the variable being measured.

If a star is shown to be 33.11 trillion kilometers away, how many light years would that be?

Answers

Answer:

Answer:The definition I found is: 1 light year = 9.4605284 x 10¹⁵ ... If a star is shown to be 33.11 trillion kilometers away, how ...

Answer:

I think it would be around 3.5 lightyears if i remember correctly.

Explanation:

The bovine papillomavirus E5 protein is a small (44-residue) protein with a single transmembrane domain. The E5 protein dimerizes and activtates platelet-derived growth factor. Its primary sequence is MANLWFLLFLGLVAAMQLLLLLFLLLFFLVYWDHFECSCTGLPF . What is the 19 amino acid component of this sequence that is likely to be the hydrophobic transmembrane domain (single letter abbreviations with no spaces)

Answers

Answer:

LVAAMQLLLLLFLLLFFLV

Explanation:

Transmembrane domains are hydrophobic regions inserted into the cell membrane, while surrounding protein regions are often designed to localize on opposite sides of the membrane. In general, hydrophobic amino acids are inserted into the hydrophobic core of the membrane. These hydrophobic residues have side-chains which are insoluble in water. Examples of hydrophobic amino acids, such as those observed in the putative hydrophobic transmembrane region, include leucine (L), valine (V), alanine (A), methionine (M) and phenylalanine (F).

How might you go about explaining the problem of climate change to friends and family? How could you encourage them to take climate action?

Answers

Answer:

Can you explain to them why it is not a hoax, because some people believe it is.

Which of these is the same form of energy as light? Select the correct answer.
O A. Radio waves
OB. Sound waves
O C. Electricity
OD. Potential energy

Answers

A, radio waves. Radio waves are a part of the electromagnetic spectrum which also include microwaves, infrared light, visible light, ultraviolet light, x-rays and gamma rays

Which of the following is a function of lipids in a cell?
They function in cell movement.
They are the components of cell membranes.
They form polysaccharides.
They produce enzymes.

Answers

Answer:

components of cell membranes

Answer:

b

Explanation:

How do limiting factor determine the carrying capacity of an ecosystem

Answers

Answer:

Ecosystems only have so much food, water, space, and other resources. When different types of organisms all live in these areas, theres only so much that can go around.If an ecosystem has more organisms than its water supply can support then it is beyond its carrying capacity. The ecosystem will not be able to support the organisms and they will have to either relocate or die until the ecosystem is once again at or below carrying capacity.

The carrying capacity of an ecosystem is directly proportional to the limiting factors. Limiting factors increase, carrying capacity of an ecosystem increases.

What is Carrying capacity?

Carrying capacity may be defined as the maximum number of an individual that can be supported by a habitat. The carrying capacity of any habitat depends on the following two factors:

The food to eat.The space to live.

When limiting factors such as food, space, water, nutrients, etc. in a habitat increase, the carrying capacity of the habitat will definitely increase. This situation remains the same until there will be a scarcity in all those limiting factors suffered by a habitat.

When the limiting factors decline, the carrying capacity of the habitat ultimately lowers.

Therefore, it is well described above.

To learn more about Carrying capacity, refer to the link:

https://brainly.com/question/26660965

#SPJ6

Where did all the matter that made up the solar system come from?

Answers

Answer:

Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material.

Credits to: NASA

My Answer to it:

If we want to know how our solar system began, we would first look at how it all started, as in the universes and matter. This is tied into the Big Bang Theory, which is proposed by scientists the explains causes to why the universe formed. In the theory, it states that all of the current and past matter in the universe came into existence at the same time, roughly 13.8 billion years ago. At this time, all matter was compacted into a very small ball with infinite density and intense heat called a Singularity. As time went on, it started to expand and started to cool off to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.

The narrow region between the head and diaphysis of a long bone is called the___________.
A) sulcus
B) trochlea
C) neck
D) canal
E) ramus

Answers

The narrow region between the head and diaphysis of a long bone is called the canal.

What is diaphysis?

The diaphysis is also called the shafts which are the main portions of a long bone. A bone that is longer than its width and provide most of their length.

Canal is present between the head and diaphysis of a long bone which is a narrow region so we can conclude that the narrow region between the head and diaphysis of a long bone is canal.

Learn more about canal here: https://brainly.com/question/1920109

Other Questions
Ela2A lake covers a surface area of about 30,000 square miles.How can you show the estimated area of the lake as a whole number multiplied by a power of ten?Part 1 out of 4What are you asked to find?You need to showas a whole number multiplied by a power of ten. CheckNextLoop 3. Standard deviation is ________. a mean of squared differences the square root of the variance unit-free the covariance 4. Standard deviation is useful because it ________. provides a measure of deviation from the median has no units and can therefore apply to all data ignores outliers has the same units as the underlying data The function ()=2,708.92(1.12) 12 models the amount of money in Caleb's investment account after years.Caleb says this means that the initial amount in the account was $2,708.92. Is he correct? Why or why not?A: Yes, because 2,708.92 is multiplied by the exponential term.B: Yes, because (0)=2,708.92.C: No, because you need to multiply 2,708.92 to find the initial amount.D: No, because (0) is not 2,708.92. How many planes are shown in the figure?Your answer The area of a square poster is 37 in.2. Find the length of one side of the poster to the nearest tenth of an inch. Consider the functions below.f(x) = -1g(x) =+1Find each of the following, if possible. (If it is not possible, enter NONE.) PLEASE HELP ITS TIMED!!!!!!!!!!! Which of the following macromolecules is matched with its correct role in the cell?Choose 1 answer:Choose 1 answer:(Choice A)ALipid storage of short-term energy(Choice B)BLipid chemical messenger(Choice C)CCarbohydrate key component of cell membrane (lipid bilayer)(Choice D)DNucleic acid chemical messenger Write the decimal expansion for 7/9 How does health insurance make health care more accessible? Which of the following are NOT examples of matter (CHOOSE ALL THAT APPLY)?a tablelightaira flowerheata virus 20 percent of 805 percent is 80 How do you know if an expression is a polynomial ? A ruptured pipe of an offshore oil platform spills oil in a circular pattern whose radius increases at a constant rate of 4 ft/sec. How fast is the area of the spill increasing when the radius of the spillis 100 ft? A) 4007 ft? B) 8007 C) 1007 D) 2007 l The Work in Process Inventory account of a manufacturing company that uses an overhead rate based on direct labor cost has a $6,884 debit balance after all posting is completed. The cost sheet of the one job still in process shows direct material cost of $2,600 and direct labor cost of $1,400. Therefore, the company's overhead application rate is:______a. 111% of direct labor cost.b. 186% of direct labor cost.c. 206% of direct labor cost.d. 49% of direct labor cost.e. 54% of direct labor cost. Solving InequalitiesAlgebra 1 What are the two different ways to say "you" in Spanish? Read the passage from The Odyssey - Teiresias. Which theme is reflected in the passage the odyssey teiresiasBut anguish lies ahead;the god who thunders on the land prepares it,not to be shaken from your track, implacable,in rancor for the son whose eye you blinded.One narrow strait may take you through his blows:denial of yourself, restraint of shipmates.When you make landfall on Thrinakia firstand quit the violet sea, dark on the landyou'll find the grazing herds of Heliosby whom all things are seen, all speech is known.Avoid those kine, hold fast to your intent,and hard seafaring brings you all to Ithaka.But if you raid the beeves, I see destructionfor ship and crew:Which theme is reflected in the passage? But anguish lies ahead;the god who thunders on the land prepares it,not to be shaken from your track, implacable,in rancor for the son whose eye you blinded.One narrow strait may take you through his blows:denial of yourself, restraint of shipmates.When you make landfall on Thrinakia firstand quit the violet sea, dark on the landyou'll find the grazing herds of Heliosby whom all things are seen, all speech is known.Avoid those kine, hold fast to your intent,and hard seafaring brings you all to Ithaka.But if you raid the beeves, I see destructionfor ship and crew.It is important to take responsibility for your actions.Answer options:Long-term goals are more important than short-term gains.The true measure of wisdom is overcoming your pride.The advantage of travel is that it teaches you to value home. Simplify the expression: 7(5 3h) I need to know the answer