Given a sample of three unknown solids, we would be able to deduce which are ionic solids by their melting and boiling points, conductivity in water, and the insulation they provide.
What are Ionic solids?An ionic solid is a solid formed by ionic bonds. They are the solid version of ionic compounds, which are held together by strong electrostatic energies. What properties do they possess?Among their many properties, ionic solids possess high melting and boiling points.These solids are also known to conduct electricity well when dissolved into water, however, this can be tested after melting them as they will not conduct electricity in a solid state.A final property that we can use to identify them is that they provide a good means of insulation.Each of these properties can be tested and will allow us to determine the ionic solids amongst the samples.Therefore, we can find the ionic solids amongst the samples by testing their melting and boiling points, conductivity in water, and the insulation they provide, given that each of these should provide high values to indicate an ionic solid.
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what are the three molecules that are attached to the plasma membrane, and what are their roles/ functions?
Answer:
Ans:
*Carbohydrates
*Proteins
*Cholesterol
Explanation:
The plasma membrane is a structure that has several distinct roles in the cell
The plasma membrane is mainly composed of the phospholipid Bilayer, which is a layer of two sheets located in the internal and external parts. The Phospholipids are said to be Amphipathic because they have both properties of Hydrophobic and hydrophilic
*The Carbohydrate Molecules attach to the Plasma Membrane such as to the lipids and Proteins:
when They attach to the Proteins, they are known as glycoproteins, and they help in cell recognition, when they attach to the lipids, they are known as Glycolipids
*Protein Molecules play an important role in transport system such as Carrier Proteins
*Cholesterol Molecules help in balancing the Fluidity of the plasma membrane
hope this was of use
Some acids like acetic acid and tartaric acid cannot be tasted
TRUE OR FALSE
The statement is a false.
An acid is a substance which when dissolved in water, produces hydroxonium ion, as the only positive ion.
Some properties of acid include:
They have sour tastes andStrong acids are corrosive.There are two types of acids which includes:
Strong acids: These are the acids that ionizes completely in solution.Weak acid: These are the acids that ionizes incompletely in solution.Examples of weak acid is acetic acid and tartaric acid.
They can be used as food substances like vinegar and naturally occurs on fruit like banana or grape.
Therefore, weak acids such as acetic acid and tartaric acid can be tasted.
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The given statement is False.
Some acids like acetic acid and tartaric acid can be tasted.
Organic acids, such as acetic, citric, malic, and fumaric acids in fruits and vegetables, and tartaric acid in wine, contribute significantly to the sour flavor of foods and beverages. Many inorganic acids taste sour in dilute solutions.
Tartaric acid is fairly water soluble and has a pronounced tart flavor. Tartaric acid is present naturally in grapes and bananas and has been shown to improve the flavor of grape and lime-flavored beverages. Tartaric acid may aid in the treatment of glucose intolerance and digestion.
Acetic acid is a colorless liquid having a sour flavor. Although it is most frequently associated with vinegar, this acid has a wide range of different applications in a variety of industries. Acetic acid is a colorless liquid that is composed of chemical compounds.
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Given the equation
N2(g) +3H2 (g)--> 2NH3 (g)
1 mole of N2 gas is needed to completely react with 3 moles of H2 gas.
How many molecules of H2 gas are needed?
Answer:
1.81 x [tex]10^{24}[/tex] molecules H2
Explanation:
Use Avogadro's number:
3 moles H2 x 6.022 x [tex]10^{23}[/tex] molecules= 1.81 x [tex]10^{24}[/tex] molecules H2
Melting gold with other metals makes 10 karat gold. Which term best describes 10 karat gold
The 10 karat of gold formed by melting gold with other metals is described as homogeneous mixture.
A pure substance is a substance that is made up of only one kind of particle. This type of substance consist of only one element.
A heterogeneous substance is a type of substance that is made up two or more substances existing in different phases.
A homogeneous substance is a type of substance that is made up of two or more substances evenly mixed. This type of substance exist only in one phase.
Thus, the 10 karat of gold formed by melting gold with other metals is described as homogeneous mixture.
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Answer:
homogeneous mixture
Explanation:
how does the value of g on the earth is related to the mass of the earth and its radius drive it
The relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is [tex]g = \frac{GM}{R^2} [/tex].
What is weight of an object?
The weight of an object is determined as the product of the object's mass and acceleration due to gravity.
F = mg
The gravitational force on objects in the universeThe gravitational force between two objects in the universe is directly proportional to the product of mass of the objects and inversely proportional to the square of the distance between the objects.
[tex]F = \frac{GmM}{R^2} [/tex]
[tex]mg = \frac{GmM}{R^2} \\\\ g = \frac{GM}{R^2} [/tex]
where;
M is the mass of the earth
R is the radius of the earth
Thus, the relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is [tex]g = \frac{GM}{R^2} [/tex].
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100 POINTS PLZZ HELPP
draw the correct structural formula for the following molecules
Answer:
I cant see the questions can u do a picture zoomed in, thanks :)
Explanation:
HELP!!!!
Which of the following has the smallest electron affinity?
а К
b Ca
C Li
d Na
e Mg
Answer:
e. Mg.
Explanation:
Answer:
[tex]mg[/tex]
is the answer to your question
HELP PLEASE ASAP ILL GIVE BRAINLEST
Answer:
D
Explanation:
braineist pls???????????
Answer:
C
Explanation:
gram is bigger than atom duh
During the Cellular Respiration reaction glucose reacts with oxygen gas
to form water and Carbon Dioxide. How much carbon Dioxide would be formed from 58 grams of glucose?
try putting 66 grams CO2 for answer
dose any body know 2(-3+6)=
______
3
Answer: The answer is 6
1) Simplify -3+6 to 3.
2×3
And then Simplify.
6
Sorry if im wrong
How did the believers show their fellowship with one another?
Answer:
I think you may have chosen the wrong subject for your question, besides where is the context to this?
23. An organism develops active immunity as a result of
A) manufacturing its own antigens
B) producing antibodies in response to a
vaccination
C) receiving an injection of antibodies produced
by another organism
D) receiving an injection of a dilute glucose
solution
a
Answer:
B is correct.
Explanation:
A vaccination will trigger the organism to prepare antibodies as a measure of protection against a sickness.
which acid is part of the white coating on sour patch kids?
Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids. COmbustion analysis of a 12.01g sample of tartaric aid, which contains carbon, hydrogen and oxygen, produces 14.08g CO2 and 4.32g
H2O.
i would know because i have see what there made of
Which statement below describes the behavior of a Molecules when a substance changes from a gas to liquid
Answer:
As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.
Explanation:
hopfully this helps!
HELP PLSS ASAP PLEASE
Answer:
5.24 x 10^23
Explanation:
Avogadro's constant is 6.02 x 10^23
1 mol = 6.02 x 10^23
0.87 mol = 6.02 x 10^23 x 0.87 = 5.24 x 10^23 (2.d.p)
100 PIONTSSSS PLZ HELP
Draw the correct structural formula for the following molecules
Answer:
Explanation:
how do u draw on here
magnesium nitrate contains chemical bonds that are
Answer:
Magnesium Nitrate is an ionic compound formed by:
Magnesium;Mg+2 (the cation) and Nitrate NO−3 (the poly-atomic anion).
In order for these two ions to bond, the charges must be equal and opposite. Therefore, it will take:
two -1 nitrate ions to balance the one +2 magnesium ion.
PLEASE HELP I DON´T KNOW WHAT THE DIFFERENCE BETTWEEN THE TWO IS!
What is the difference between a product and a reactant.
Answer:
A reactant is a substance that is present at the start of a chemical reaction. A product is a substance that is present at the end of a chemical reaction.
Explanation:
typhoons are more violent than hurricanes
Answer:
i think it is FALSE.
Explanation:
good luck
Fill in the blank:
A correctly written hypothesis uses an ____ ______ statement
Answer:
a theory of a experiment and the experiment acts like a judge determining if the hypothesis is right or wrong from the final test result
Explanation:
“Burning of fossil fuels causes pollution.” Suggest alternative methods by
which we can overcome this global issue in less than 250 words.
An alternative method by which we can overcome this global issue is by harnessing Solar energy.
Discussion:
Fossil fuels cause environmental pollution. This is because they are organic compounds and on combustion, they release air pollutants such as, Carbon monoxide.
As a panacea, the use of solar panels for harnessing Solar energy in a bid to replace energy from fossil fuels will prove to be am effective method by which we can overcome the global issue of pollution caused by burning of fossil fuels.
Solar energy is a clean source of energy as there's no release of harmful air pollutants.
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Alternative method by which we can overcome this global issue is by
harnessing energy with less form of pollution. These include:
Solar energyHydropowerNuclear energyFossil fuel burning releases greenhouse gases such as Carbon dioxide,
nitrous oxide etc which causes pollution to the atmosphere.
It is best to adopt alternative methods mentioned above to ensure pollution
is reduced to the barest minimum. This helps to prevent ozone depletion and
global warming. It also reduces risks of respiratory diseases due to the
inhalation of the gases.
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PLEASE PEOPLE I NEED HELP PLEASE IF YOU SEE THIS HELP ME ! :,(
NO LINKS !!!! PLEASE :)
Answer: 5.5 7.5 102
Explanation: using the equation above you can get these %s
Can someone please explain the steps to the correct answers?
Explanation:
1. b is correct because 10^-2 is 1/100. multiplying that by 1.862 is 0.01862
2. 6 feet 10 inches = 82 inches. multiplying 82 by 2.54 we get 208.28. there are only two sig figs so it's 210 cm, not 0.21 cm.
3. 25.2 x 39370 = 992000, which is 9.92 x 10^5.
Mendeleev's arrangement of the periodic table was in order of increasing ____.
A. atomic number
B. atomic mass
C. neutron number
D. valence electron number
Answer:
B. atomic mass
Explanation:
He arranged the elements into rows in order of increasing mass so that elements with similar properties were in the same column.
Here is Beck's address:
12 Riverdale Lane, Apartment A
San Jose, California
USA
Imagine each of the five parts of Beck's address represents Earth, the Milky Way, the moon, the solar system, or the universe, based on their sizes. Which of the
following parts of Beck's address would represent the solar system?
O California
O 12 Riverdale Lane
San Jose
O USA
Answer:
The answer is San Jose
1. One atom contains 29 protons and 34 neutrons. Another atom of the same element has a mass number of 65. How many protons and neutrons does this unknown atom have?
A. 28 protons, 37 neutrons
b. 29 protons, 36 neutrons
C. 29 protons, 35 neutrons
D. 31 protons, 34 neutrons
Answer:
b
Explanation:
because its the atom of the same element, the no of protons doesn't change but the mass number changes so we can find the mass number by:
(mass number = atomic no/no of protons + no of neutrons)
here;
mass number given = 65
and we know, no of protons = 29
let no of neutrons = x
hence,
65 = 29 + x
x= 65 – 29
x= 36
hence your answer is b
Write the charges for each part of this equation.
Answer:
the Aluminium Al have +3 charges and idion have I) have - 2 charges
Which is the correct measure of density?
Cm^2/g
g/cm^3
cm^3/g
mass x volume
Answer:
g/cm^3
Explanation:
Density= m/v
gram is a measurement of mass
cm^3 is a measurement of volume
Hope this helps:) Have a good day!
Determine the highest occupied energy level in the
following elements:
a. He
b. Be
c. Al
d. Ca
e. Sn
Silicone is a type of synthetic compound made of silicon, oxygen, and other elements. There are many different kinds of silicone. One kind is a liquid and is commonly used as a lubricant to reduce friction between moving parts. Unlike petroleum-based lubricants, silicone is nontoxic. However, silicone is more expensive than petroleum-based lubricants.
Which of the following would silicone lubricants most likely be used for?
Explanation:
Liquid-based lubricant
Answer:
study island : food service equipment
Explanation: