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larisa [96]
3 years ago
12

It is the difference in the r group that makes each amino acid chemically unique. it is the difference in the r group that makes

each amino acid chemically unique.
a. True
b. False
Chemistry
2 answers:
babymother [125]3 years ago
4 0
True.brain is lots of chemical reaction
adoni [48]3 years ago
4 0

Answer: True

Explanation:

The amino acids can be defined as organic compounds that is composed of oxygen, nitrogen, carbon and hydrogen.

The body has 20 different types of amino acids in the body of the organism. The amino acids are characterized based on the difference in their alkyl groups that is found in it.

The amino acids consists of a carboxyl group, amino, hydrogen and alkyl group. Rest of the structures remains same but the change in the alkyl group makes one amino acid different from other.

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When taking a measurement with a pH meter, keep the instrument in the ______________ until it is needed. Rinse the pH meter with
nydimaria [60]

Answer:

Storage solution; deionized water; stabilizes.

Explanation:

The pH scale measures the concentration of hydrogen ions in acidic and alkaline solutions.

In chemistry, it literally means power of hydrogen ions and it is a measure of the molar concentration of hydrogen ions in a particular solution, thus specifying the acidity, neutrality or basicity of chemical solutions.

Mathematically, the pH of a solution is given by;

pH = -log_{10}(H^{+})

Hence, a solution with a pH of 7 is neutral. Also, a solution with a pH below 7 is acidic but basic (alkaline) if it's pH is above 7.

A pH meter can be defined as a scientific instrument or device designed and developed for the measurement of the hydrogen-ion concentration in water-based solutions, in order to determine their level of acidity or alkanility.

When using a pH meter to take a measurement, you should keep it in a storage solution until it is needed. Also, a deionized water should be used to rinse the pH meter and gently pat dry.

Furthermore, the pH meter should be placed in a given sample solution and a reading of the measurement taken when the pH of the solution stabilizes.

8 0
3 years ago
Chem help what's the answer to 8 and why will give brainliest​
laiz [17]

avogadros law states that under constant temp n pressure, volume of a gas is directly proportional to amount of gas

amount of gas1 = 352millimoles

amount of gas2 = 352+100 = 452millimoles

new vol = old vol x 452/352 = 25.2 x 452/352

= 32.4 mL

4 0
3 years ago
Read 2 more answers
How many molecules are in 5.50 grams of AgNO3?
mixas84 [53]

Answer:

1.95*10²² molecules are in 5.50 grams of AgNO₃

Explanation:

Being the molar mass of the elements:

  • Ag: 107.87 g/mole
  • N: 14 g/mole
  • O: 16 g/mole

then the molar mass of the compound is:

AgNO₃: 107.87 g/mole + 14 g/mole + 3*16 g/mole= 169.87 g/mole

Then you can apply the following rule of three: if 169.87 grams of the compound are present in 1 mole, 5.50 grams will be present in how many moles?

moles=\frac{5.50 grams*1 mole}{169.87 grams}

moles= 0.0324

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

You can apply the following rule of three: if by definition of Avogadro's Number 1 mole of the substance contains 6.023 * 10²³ molecules, 0.0324 moles how many molecules will it have?

molecules=\frac{0.0324 moles*6.023*10^{23} molecules}{1 mole}

molecules=1.95*10²²

<u><em>1.95*10²² molecules are in 5.50 grams of AgNO₃</em></u>

3 0
3 years ago
Synthesis<br> Decompisition<br> O Combustion<br> O Single Displacement<br> O Double Displacement
BabaBlast [244]

Answer:

Synthesis

Explanation:

Nothing else works

4 0
2 years ago
What is the chemical formula for the dancing gummy bear<br>​
PIT_PIT [208]

Answer:

— Molten Potassium Chlorate + sugar (gummi bear) ->

7 0
2 years ago
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