Building blocks are the small units that make the larger, more complex molecule. The building block of protein is an amino acid and lipids are fatty acids and glycerols.
What are proteins and lipids?Proteins and lipids are the biomolecules that are involved in major reactions in the living system. They are composed of smaller subunits joined together by bonds.
Proteins are molecules made up of amino acids linked by the peptide bonds to form the chain of proteins that plays a crucial role in cell functioning.
Lipids are composed of fatty acids and glycerol linked by the ester bond, essential for the storage of energy and in the composition of the membranes.
Therefore, proteins are composed of amino acids and lipids of fatty acids and glycerol.
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Water cools from 2oc to -2oc. during this time, what happens to the motion of the molecules?
Answer:
The motion of the molecules remains the same.
Name these compounds according to IUPAC.
Answer:
10. Butanoic acid
11. Methylpropanoate
Explanation:
In this case first you need to identify the functional group,secondly identify the longest chain that contains the particular functional group:
10. The functional group for this compound is a carboxylic acid due to the "CHO2" group..we have four carbons which makes the parent chain to be butane.since it's acarboxylic acid we replace the "e" at the end to "oic acid".
11. The functional group is ester "RCOOR".For the ester the longest chain is counted from the part of the carboxylic acid which in this case is a propane,and the part from the alcohol becomes a substituent. With esters you replace the "e" at the end of the parent name to "oate". When you write it down you begin with the substituent in this case "methyl" and the rest follows...
hope it is clear enough
5. Consider the following experiment: A block of iron with an initial mass of 50 g is placed in a sealed container of pure oxygen. After several days, the block is red in color and has a mass of 74 g. Are these observations a violation of the law of conservation of mass? Justify your answer.
The observation in the illustration remains in accordance with the law of conservation of mass assuming that moisture is present in the container.
What is the law of conservation of mass?The law state that mass can neither be created nor destroyed. However, mass can be converted from one form to another.
In this case, the ion was placed in a container of pure oxygen. Assuming that moisture is present, iron reacts with oxygen to form rust according to the following equation:
[tex]4Fe + 3O_2 + 6H_2O --- > 4Fe(OH)_3[/tex]
The rust formed will weigh more than the initial weight of the iron.
Without the presence of moisture, one can effectively conclude that the observation violates the law of conservation of mass.
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What is the molarity of a solution that contains 25 g of hcl in 150 ml of solution? (the molar mass of hcl is 36.46 g/mol.) what should you find first?
Answer: 4.6 M
Explanation:
Converting 25 g of HCl to moles, we get 25/36.46 = 0.68568294020845 moles.
Also, 150 mL = 0.150 L
So, the concentration is:
[tex]\frac{0.68568294020845}{0.150} =\boxed{4.6 \text{ M}}[/tex]
Answer:
Part 1. First, you find the Moles.
Part 2. The correct setup for finding the moles is: 25g HCI x 1mol HCI/36.46g HCI
Part 3. The correct setup to find liters is: 150 mL x 1L/1000mL
Part 4. The molarity of this solution is: 4.6 M HCI
Explanation:
just listen lol
What is the oxidation number of sulfur in na2s2o3 ?.
Answer:
Therefore, the oxidation state of sulphur atoms in Na2S2O3 is −2 and +6.
Name these compounds according to IUPAC.
IUPAC is the nomenclature approach used for naming compounds. The compounds are ethane, butane, and butene.
What is IUPAC?IUPAC is the nomenclature method of the organic compounds that are universal and is recommended by the International union so that the names of the same chemical species are constant and ubiquitous all over.
The first compound has a single bond and two carbons hence ethane, the second compound has a single bond and four carbons and hence butane, and the third compound has one double bond and four carbon atoms and hence butene.
Therefore, the compounds are ethane, butane, and butene.
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What is the mass of 61.9 L of oxygen gas collected at STP?
a 122 g 02
b 2.76 g 02
C 88.4 g 02
d 44.2 g 02
Answer:
D. 44.2 g O₂
General Formulas and Concepts:
Gas Laws
Stoichiometry
Dimensional AnalysisMole RatioExplanation:
Step 1: Define
Identify given.
61.9 L O₂ at STP
Step 2: Convert
We know that the oxygen gas is at STP. Therefore, we can set up and solve for how many moles of O₂ is present:
[tex]\displaystyle 61.9 \ \text{L} \ \text{O}_2 \bigg( \frac{1 \ \text{mol} \ \text{O}_2}{22.4 \ \text{L} \ \text{O}_2} \bigg) = 2.76339 \ \text{mol} \ \text{O}_2[/tex]
Recall the Periodic Table (Refer to attachments). Oxygen's atomic mass is roughly 16.00 grams per mole (g/mol). We can use a mole ratio to convert from moles to grams:
[tex]\displaystyle 2.76339 \ \text{mol} \ \text{O}_2 \bigg( \frac{16.00 \ \text{g} \ \text{O}_2}{1 \ \text{mol} \ \text{O}_2} \bigg) = 44.2143 \ \text{g} \ \text{O}_2[/tex]
Now we deal with sig figs. From the original problem, we are given 3 significant figures. Round your answer to the exact same number of sig figs:
[tex]\displaystyle 44.2143 \ \text{g} \ \text{O} \approx \boxed{ 44.2 \ \text{g} \ \text{O}_2 }[/tex]
∴ our answer is letter choice D.
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Topic: AP Chemistry
Unit: Stoichiometry
What are some differences between pure substances and mixtures?
Answer:
. a pure substance consists only of one element or one compound.
. a mixture consists of two or more different substances, not chemically joined together
The solubility of which substance is least affected by the temperature of the water
Answer:
solo esto se responderte
Explanation:
Algunos solutos (por ejemplo, cloruro de sodio (NaCl) en agua) exhiben una solubilidad bastante independiente de la temperatura. Unos pocos, como el sulfato de cerio (III) y el carbonato de litio, se vuelven menos solubles en agua a medida que aumenta la temperatura.
HELP ASAP PLEASE!!!!!!!Which statements describe what happens in a redox reaction? Check all that apply. A. One substance gains electrons and one substance loses electrons. B. Electrons are moved between two substances. C. There are two reduction reactions. D. The anions on two compounds trade places
Electrons are moved between two substances.
Draw two lewis structures for a compound with the formula c4h10. No atom bears a charge, and all carbon atoms have complete octets. Include all hydrogen atoms.
Answer:
See pictures!
Explanation:
Here is a drawing of butane (C4H10); labeled #1. An isomer of butane will also have the chemical formula C4H10 but is depicted different geometrically. I labeled this one #2.
What is the purpose of cross breeding or selective breeding
What is the major defining property of gasses?.
Answer:
Gases have no definite shape or volume. They are fluid, allowing particles/molecules to move freely.
The behavior of a gas is that the volume changes directly with temperature. With a constant volume, the pressure will be directly proportional to the amount of gas.
Explanation:
These are some of the properties I can think of
A fish has armored plates that enable it to handle the extreme pressure in the deepest, darkest aquatic ecosystem. Where is this fish adapted to live? a pond the open ocean the neritic zone an estuary.
Reduction is a reaction that uses________to change a molecule into something else.
Answer:
chemical reaction
Explanation:
Reduction is the transfer of electrons between species in a chemical reaction where there is a process of gaining electrons or a decrease in the oxidation state by an element. A reduction chemical reaction involves increasing electrons associated with a single atom or a group of atom
how many grams of sodium Phosphate is needed to prepare 5.0 L of a 2.6M solution ?
Molarity is the ratio of the moles and the volume. The mass of 2.6 M sodium phosphate solution is 2131.22 gms.
What is mass?
Mass is the product of the moles and the molar mass of the substance. It is given as,
Mass = Moles × Molar mass
The moles from molar concentration is used to calculate mass as:
Mass = Molarity × volume × molar mass
= 2.6 × 5.0 × 163.94
= 2131.22 gms
Therefore, 2131.22 gms is the mass of sodium phosphate.
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5. Elements are different because they contain different numbers of protons.
Answer:
True
Explanation:
The number of electrons are what determine an atom.
The number of electrons = number of protons
so the elements are different.
If the number of neutrons are different but the number of electrons and protons are same they are of the same element.
But here the number of protons are different so this is another element.
If 30.5 g of 15% potassium nitrate solution are reacted to excess magnesium chloride how many grams of potassium chloride will be form
If the concentration of H+ is 4.29 x 10-4 M, what is the pH?
pH = - log [H⁺]
pH = - log 4.29 x 10⁻⁴
pH = 4 - log 4.29
What is effect of temperature on solubility?
detail please.
In general, solids become more soluble as the temperature increases. This is why sugar dissolves better in hot water than in cold water. The table shows three examples of the solubility (g of solute per 100 g water) of substances at different temperatures.
that's my answerWILL GIVE BRAINLIEST What would the products of a double-replacement reaction between LiCl and MgO be? (Remember: In double-replacement reactions, the two cations switch places and the two anions switch places.)
Express your opinion for or against the theory of evolution
Explanation:
Critics of evolution commonly appeal to past scientific hoaxes such as the Piltdown Man forgery. It is argued that because scientists have been mistaken and deceived in the past about evidence for various aspects of evolution, the current evidence for evolution is likely to also be based on fraud and error.
The reactions listed below are either chemical reactions or nuclear reactions. which are nuclear reactions? check all that apply. upper h superscript plus, plus upper o upper h superscript minus right arrow upper h subscript 2 upper o. superscript 185 subscript 79 upper a u right arrow superscript 181 subscript 77 upper r d plus superscript 4 subscript 2 upper h e. 4 upper f e plus 3 upper o subscript 2 right arrow 2 upper f e subscript 2 upper o subscript 3. superscript 210 subscript 84 upper p o right arrow superscript 206 subscript 82 upper p b plus superscript 4 subscript 2 upper h e.
The equations that are nuclear reactions are as follows:
superscript 185 subscript 79 upper Au right arrow superscript 181 subscript 77superscript 210 subscript 84 upper Po right arrow superscript 206 subscript 82 upper Pb plus superscript 4 subscript 2 upper He.What is nuclear reaction?A nuclear reaction is a reaction that involves the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and/or subatomic particles in which the number of protons and/or neutrons in a nucleus changes.
The products of a nuclear reaction may contain a different element or a different isotope of the same element.
Therefore, the equations that are nuclear reactions are as follows:
superscript 185 subscript 79 upper Au right arrow superscript 181 subscript 77superscript 210 subscript 84 upper Po right arrow superscript 206 subscript 82 upper Pb plus superscript 4 subscript 2 upper He.Learn more about nuclear reaction at: https://brainly.com/question/19752321
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Answer:
b. Reaction B involves a greater change and a change in element identity.
Explanation:
i got it wrong
Please Hurry And Answer This Question! :)
Which Compound can be used to preserve biological specimens?
1/2/3?
Biological specimens are the preserved remains of the biological materials. Compound A. formaldehyde or formalin is used to preserve the specimens. Thus, option A is correct.
What are fluid-preserved specimens?Fluid preserved specimens are the biological material of the organism that are kept at the store to study and analyze over a long time without getting any damage. Formaldehyde along with alcohol is the most common preservative.
Formaldehyde is an organic compound that is colorless and pungent in the smell that preserves the dead remains of the organisms intact. It is antiseptic and germicide in nature that makes them best for the purpose.
Therefore, option A. formaldehyde is used to preserve the specimens.
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Answer:
so i put a...
Explanation:
Edge doesnt give correct answers on unit tests, but i passed with an 88 :)
Correct me if im wrong!!
What clues indicate that a chemical reaction has occurred?
Choose all correct answers.
the formation of a new liquid
a color change
a temperature change
the formation of bubbles
Answer:
its probably all of the above, if not then it should be the formation of a new liquid, and a color change
Explanation:
HELP ME PLEAS FAST.
Which statement describes how heat is transferred by convection?
Question 4 options:
Air molecules touch the warm ground, heating them up
Warm air rises and cool air sinks
Sunlight travels through space
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Convection is a method of heat transfer that causes heat to be transferred from one object to another object with being in actual contact but I same atmosphere.
So, the correct phenomenon that describes how heat is transferred by Convection is :
Statement 2. Warmer air rises and copl air sinks.
Define pressure and temperature.
Answer:
The pressure of a given amount of gas is directly proportional to the temperature at a given volume. When the temperature of a system goes up, the pressure also goes up, and vice versa. The relationship between pressure and temperature of a gas is stated by the Gay-Lussac's law.
Chemical labels must contain a product identifier, signal word and a pictogram to represent the hazards. what other information is required on a chemical label?
Answer:
The HCS now requires the following elements on labels of hazardous chemicals: Name, Address and Telephone Number of the chemical manufacturer, importer or other responsible party
Explanation:
I tried, I think this is the correct answer.
Fluorine-21 has a half-life of approximately 5 seconds. what percentage of the original nuclei would remain after 15 seconds
Answer:
1/8th = 12.5%
Explanation:
Three half lives would be 1/2 * 1/2 * 1/2 = 1/8 th of original
When a chemical cold pack is activated, it becomes cool to the touch. What is happening in terms of energy?.
Answer:
An exothermic reaction is happening, it is absorbing the cold.
