________ are molecules whose general structure includes a central carbon with a carboxyl group, an amine group, a hydrogen molecule, and a residual (r) group.

Answers

Answer 1

Answer:

The amino acids are the molecules where we can found the carboxyl group (- $COO^(-)$ ), amino group (- $NH_(2)$ ), hydrogen atom (H) and a residual R-group. On the structure of the residual R-group the name of the amino acid depends. Like if R is hydrogen (H) the amino acid is alanine; If R- group is a phenyl group i.e. $-C_(6)H_(5)$ , the compound is called phenyl alanine. The structure of the general amino acid skeleton can be shown as-

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My sister is a peach" is a metaphor.

TrueFalse

Answers

yes that is a metaphor

Answer:

True it is a metaphor

Explanation:

3 During a flame test, a lithium salt produces a characteristic red flame. This red color is produced when electrons in excited lithium atoms(1) are lost by the atoms
(2) are gained by the atoms
(3) return to lower energy states within the atoms
(4) move to higher energy states within the atoms

Answers

Answer:

The correct answer is (3).
Return to lower energy states within the atoms

Explanation:

When an atom absorbed a specific energy, the electron move from lower energy state to higher energy state known as excited energy state. After sometime, the excited state electron come back to lower energy orbital (Ground state) with emission of light as in this case of lithium, red light is emitted.

What is the mass of 2.90 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?

Answers

40.0 g ( 1 mole ) --------------- 6.02x10²³ molecules
? ? --------------------------- 2.90x10²² molecules

mass = 2.90x10²² * 40.0 / 6.02x10²³

mass = 1.16x10²⁴ / 6.02x10²³

mass = 1.9269 g

hope this helps!

A national convention occurs every four years. Who is responsible for organizing this event? A. national party chairperson B. speaker of the house C. majority leader D. vice president

Answers

A national convention occurs every four years, so political parties can nominate their presidential bet for the coming elections. This signifies the end of a presidential primary season. It is convened by the political party's national committee, and is headed by the A. national party chairperson.

When solid ammonium carbonate is heated, it decomposes to form ammonia gas, carbon dioxide gas, and water vapor, so that the solid completely disappears. Write a complete, balanced equation for this reaction.

Answers

Answer:

(NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(g)

Explanation:

The balanced equation can be written when we know the chemical formula of each reactants and products of the reaction.

Ammonium carbonate = (NH4)2CO3(s)

Ammonia = NH3(g)

carbondioxide = CO2(g)

water = H2O(g)

The ammonium carbonate was decomposed in the reaction , so ,

(NH4)2CO3(s) → NH3(g) + CO2(g) + H2O(g)

The reactant is on the left side while the product is on the right side. Let us balance the equation to make sure every atom of element is same number on both sides of the equation.

(NH4)2CO3(s) → 2 NH3(g) + CO2(g) + H2O(g)

Final answer:

The decomposition of ammonium carbonate upon heating produces ammonia, carbon dioxide, and water. The balanced equation for this decomposition reaction is: (NH4)(HCO3) → NH3 + CO2 + H2O.

Explanation:

The decomposition of solid ammonium carbonate (NH4)(HCO3) upon heating produces ammonia (NH3), carbon dioxide (CO2), and water (H2O) in gas form. This is a specific type of reaction called a decomposition reaction, which breaks down a compound into its constituent parts. The balanced chemical equation informing this process is: (NH4)(HCO3) → NH3 + CO2 + H2O.

Note from this equation, it is clear that the ammonium carbonate completely disappears as it gets converted into gaseous products upon heating.

Learn more about Decomposition Reaction here:

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What is the major difference between a solution and an ordinary mixture?

Answers

An ordinary mixture can be separated without using chemicals, a solution cannot.

The major difference between a solution and an ordinary mixture is that solution is homogeneous and an ordinary mixture is heterogeneous.

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According to the Arrhenius theory a substance that yields hydrogen ions as the only ion in an aqueous solution is

Which list includes elements with the most similar chemical properties? 1.Br, Ga, Hg 2. Cr, Pb, Xe 3. O, S, Se 4. N, O, F

a) NaClO3 -> NaCl + O2------------------------DESCOMPOSICION b) HNO3 +Fe -> H2 + Fe (NO3)2------------SIMPLE SUSTITUCION c) Kl + Pb (NO3)2 -> Pbl2 + KNO3--------DOBLE SUSTITUCION d) C + O2 -> CO2-----------------------COMBINACION o SINTESIS e) Ca(HCO3)2 -> CaCO3 + CO2 + H2O--no estoy seguro pero en todo caso DESCOMPOSICION