Which of the following is not part of an amino acid?
A. ammonium group
B. carboxylate group
C. ether group
D. unique "R" group

Answers

Answer 1

Answer:

C

Explanation:

Ether group does not exist in amino acids

Ammonium group is on one side

the carboxylate group is opposite to the ammonium group

the R group defines what amino acid it is.


Related Questions

I NEED HELP WItH THIS 5th GRADE QUESTION ITS VERY VERY EASY no Links PLZ and I will Report any useless AWnser PLZ HELP WILL mARK AS BRAINLIST AND Will giVE 1000 Points if correct Answer
How is the mass of a solid measured?

By estimating
With a beaker
With a ruler
With a scale

Answers

Answer:

A Beaker or graduated cylinder

Explanation:

Place the solid into the graduated cylinder. Measure the amount of water in the graduated cylinder. The product is the solid's mass wich i mean by that is what number the water level is at.

Answer:

Beaker

Explanation:

10 ml of solution of acetic acid is added to 250 ml volumetric flask , the concentration of diluted vinegar is 0.01 M. What is the % by mass of acetic acid in vinegar if the density of vinegar is 1.05 g/ml. ( C: 12 O:16 H: 1 )​

Answers

The percentage by mass of the acetic acid is 0.057%.

The given parameters:

Volume of the acetic acid = 10 mlVolume of the flask, = 250 mlConcentration of the diluted vinegar = 0.01 MDensity of the vinegar, ρ = 1.05 g/ml

The concentration of the acetic acid is calculated as follows;

[tex]C_1V_1 = C_2 V_2\\\\C_1 = \frac{ C_2 V_2}{V_1} \\\\C_1 = \frac{0.01 \times 250}{10} \\\\C_1 = 0.25 \ M[/tex]

The number of moles of acetic acid in the given concentration;

[tex]C = \frac{mol}{L} \\\\mole = CL\\\\mole = 0.25 \times 10 \times 10^{-3} \\\\mole = 0.0025[/tex]

The molar mass of acetic acid = 60 g/mol

The mass of acetic acid in the given number of moles is calculated as follows;

m = conc. x molar mass

m = 0.0025 x 60

m = 0.15 g

The mass of vinegar in the volume and density;

m = density x volume

m = 1.05 x 250

m = 262.5 g

The percentage by mass of the acetic acid is calculated as follows;

[tex]= \frac{0.15}{262.5} \times 100\%\\\\= 0.057 \%[/tex]

Thus, the percentage by mass of the acetic acid is 0.057%.

Learn more about percentage by mass here: https://brainly.com/question/22060503

What holds the nucleus together? Group of answer choices alpha particles strong forces electrical forces between the protons beta particles

Answers

Answer:electrical forces between the protons

Explanation: The strong nuclear force pulls together protons and neutrons in the nucleus. At very small distances only, such as those inside the nucleus, this strong force overcomes the electromagnetic force, and prevents the electrical repulsion of protons from blowing the nucleus apart.

Symbol of elements. ​

Answers

Explanation:

Gold Au

Copper Cu

Iron Fe

Magnesium Mg

Hydrogen H

Helium He

Mercury Hg

Iodine I

The symbol of the elements is the element name you can look ok a periodic table to make it easier

When the radiation isn't quite strong
enough to kill right away a terrible
Condition follows what is it called
and what is happening.

Answers

When radiation isn’t Enough to kill you but it’s too much for your body to handle you would get what is called radiation poisoning. the symptoms are vomiting, nausea, diarrhea, headache, and several others

Acid hydrolysis of N-methylbutyramide in water and hydrochloric acid with heat produces______________________________.
a. Butyric acid and methylammonium chloride.
b. Butanoic acid and ammonium chloride.
c. Butanoate and methylamine.

Answers

Answer:

A- Butyric acid and methylammonium chloride.

Explanation:

An aqueous solution was prepared by dissolving 266.07 g of AgNO3 ( 169.88 g/mol) in enough water to make a total volume of 250.0 ml. What is the molarity of the solution

Answers

Answer:

The correct answer is 6.265 M.

Explanation:

To find the molarity of the solution, we first must recall that molarity represents the number of moles of solute divided by the number of liters of solution. Thus, our first step should be to convert the solute amount in grams to moles, using the given molar mass.

266.07 g * (1 mol/169.88 g) = 1.5662 mol

Now, we can find the molarity using the following formula:

Molarity = moles solute/liters solution

M = 1.5662 mol/0.25 L

M = 6.265 M

Therefore, the molarity of the solution is 6.265 M.

Hope this helps!

Can someone help me with this please

Answers

Answer:

1.

a. Diagram A

b. Diagram A should stay still, but Diagram B should move/roll to the left.

__________________________________

2.

a. Diagram A and Diagram B are different because the object kg are different, one is 10kg and the other is 2kg.

b. Diagram B because its smaller making it lighter to move when Diagram A is 5 times larger, which will make it heavier.

__________________________________

3.

a. Diagram A and Diagram B compare because the object both equal 3kg.

b. Diagram A will have a greater acceleration because 80n > 40n

need help with question please ..
-20 points

Answers

Answer:

B oklolol

[tex][tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex][/tex]

14. pH value are basic are greater than what number while acids are have a pH less than
this value?

Answers

Answer:

Less than 7 ph value are acidic. Greater than 7 ph value are basic.

Determine the frequency of light with a wavelength of 2.672 x 10^-7cm

Answers

Answer:

Determine the frequency of light with a wavelength of 2.775⋅10−7 cm. Answer in units of Hz?❤

major classification of crude product​

Answers

pls mark as brainlist

Explanation:

Crude is classified, based on density, as light, medium, heavy, or extra heavy. It can also be classified, based on sulfur content, into a sour and sweet category.

If 3.5 mols of P2O3 are formed, how many
moles of P4 reacted?

Answers

P2 is 3.5 for p4= 2p2 i.e 2*3.5=7

Answer;561gp203 are required to

produce 10.2 mol H3p03

What is the formula unit for an ionic compound?

Answers

Answer:

empirical formula

A sample of CO2 gas at 100 degrees Celsius has a volume of 250 mL at 760 mm Hg. How many moles of CO2 are present

Answers

There are 8.16 × 10-³ moles of CO2 gas at 100°C with a volume of 250 mL at 760 mm Hg.

HOW TO CALCULATE NUMBER OF MOLES:

The number of moles of a sample of gas can be calculated using the following formula:

PV = nRT

Where;

P = pressure of gas (atm)V = volume (L)n = number of moles (mol)R = gas law constant (0.0821 Latm/molK)T = temperature (K)

According to this question;

P = 760mmHg = 1 atmT = 100°C = 100 + 273 = 373KV = 250mL = 0.250Ln = ?

1 × 0.250 = n × 0.0821 × 373

0.250 = 30.62n

n = 0.250 ÷ 30.62

n = 8.16 × 10-³mol

Therefore, there are 8.16 × 10-³ moles of CO2 gas at 100°C with a volume of 250 mL at 760 mm Hg.

Learn more about number of moles at: https://brainly.com/question/4147359

Which is better Epoxy or Super Glue?

Answers

Answer:

Personally, I use Superglue

Explanation:

A student reads that sodium atoms (Na) react with chlorine (Cl2) molecules to form the compound sodium chloride (NaCl). Which model should the student make to satisfy the Law of Conservation of Matter for the formation of sodium chloride, in simplest form?

Answers

Answer:

c

Explanation:

Law of Conservation of Matter for the formation of sodium chloride, in simplest form would be obeyed when 2 moles of sodium react with 1 ,mole of chlorine to form 2 moles of sodium chloride.

What is law of conservation of matter?

According to law of conservation of matter, it is evident that matter is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of matter and energy are related as matter has mass and mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of matter is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.

Learn more about law of conservation of matter,here:

https://brainly.com/question/9434062

#SPJ2

Can someone help? Thank you.

Answers

that' the answer i don't need an explanation

how many grams are in 1.35 moles of NH3

Answers

n=m(g)/Mwt (3(1)+1(14))
1.35=m/17
m=17*1.35=22.95 g

what is an adaptive organ of duck​

Answers

Answer:

The adaptive organ of duck is webbed feet.

Explanation:

Duck's webbed feet are designed like paddles to provide more surface area to help them swim.

the webbed feet

Explanation:

9 Select the correct answer. Which statement correctly describes a physical change? O A involves breaking and creating chemical bonds but not changing a phase OB. may involve a change in phase but does not involve a change in the molecular structure OC. may involve converting two or more substances into new substances OD. involves changes at the molecular level O E. involves energy transfer and change in color Reset Next​

Answers

Answer: The statement that correctly describes a physical change is may involve a change in phase but does not involve a change in the molecular structure. The answer is letter B.

Explanation: trust me

Explanation:

OA- because there is breakdown of chemical bonds

Identify one cause of the loss of forests that is not intentional.

Answers

Answer:

Natural causes are unintentional.

Explanation:

An example would be a wildfire. This natural disaster spreads quickly, especially in forests where wood burns easily. Destroying forests through burning causes nutrients to get depleted, and organisms die.

(Please someone help me!) (No links!)
Please ignore the blue dot, I accidentally pressed it and won't get rid of it!

Answers

Answer:

you picked the right one the net worth of force would be 10

Explanation:

how cuz you got 1 team with 6 force then aother 1 with 4 add em up u get 10

ghjguygyughyyhghygyuguyg

Answers

Sir! I would have to tell that this is a educational website/app so please don’t type random letters in the question bar if you don’t need help with nothing.

If the adoms dont work are they dead

Answers

Answer:  no

Explanation:

Atoms are not and have never been alive so they can't be considered dead. they simply do not meet any reasonable of life, primarily because they are not complex.

What is the mass of an aluminum block if the density of aluminum is 2.70
g/cm and the volume of that block is 4.8 cm?

Answers

Answer: 50 M

Explanation:

Mass

Density×Volume2.7(4.8)11.6111.6g

Formula used

Density=Mass/Volume

How many grams of N2 are required to react with 4.2 moles of Mg in the following process?

3 Mg + N2 → Mg3N2? (Mg = 24.3 g/mol, N = 14.0 g/mol)

Answers

Answer:

x = 0.45*28/3 = 4.2 g

Explanation:

showing work

N2 = 28 g/mole

3Mg + N2 → Mg3N2

3moles .. 28 g

0.45 moles .. x

x = 0.45*28/3 = 4.2 g (answer)

If the concentration of KMnO4 was 0.0235 M, calculate the number of moles of MnO4- ions that completely reacted with the H2C2O4

Answers

The number of moles of KMnO4 is  0.0006 moles.

The equation of the reaction is;

6 H^+(аq) + 2 МnO4^- (аq) + 5 Н2С2O4(аq) → 10 CO2 (g) + 8 H20 (l) + 2 Mn²+ (aq)

We can see that the volume of the titrant used = Final - initial burette reading

= 29.6 mL - 3.4 mL = 26.2 mL

Number of moles of H2C2O4 =  0.139 g/90 g/mol = 0.0015 moles

If 2 moles of  MnO4- reacts with 5 moles of H2C2O4

x moles of  MnO4- reacts with 0.0015 moles of H2C2O4

x =  2 moles ×  0.0015 moles / 5 moles

x = 0.0006 moles

Learn more: https://brainly.com/question/9743981

What is black powder made of? (Please provide percentage composition of elements as well) Will give brainliest

Answers

Answer:

Black powder has 3 main ingredients: Sulfur ([tex]S[/tex]), charcoal ([tex]C_{7}H_{4}O[/tex]), and potassium nitrate ([tex]KNO_{3}[/tex]).

Charcoal is basically just burnt wood and potassium nitrate can easily be displaced.

Keep in mind that this is BLACK POWDER and not actual gunpowder. The difference between the both is significant since gunpowder has a lot more refining processes it has to go through to be actually used in firearms and such.

The percentage composition of black powder should be 75% Potassium Nitrate, 10% Sulfur, and 15% charcoal.

Should be noted that black powder is not a safe compound to deal with, as static friction could ignite it.

There are other alternatives to Black powder such as nitroglycerin (used in dynamites) which is way more powerful and useful in doing mines and exploration but is an extremely tricky and reactive substance to work with.

I do hope this is just for educational purposes because you need to be certified to even just experiment with this (and there are laws to synthesize such as well, which I won't take any responsibility for)

Answer:

sulfur, charcoal and potassium nitrate

Explanation:

Payback

As an electron in an atom moves from a higher energy state to a lower energy state, the atom
A
becomes a negative ion
В.
becomes a positive ion
С.
releases energy
D.
absorbs energy

Answers

Answer:B

Explanation:

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