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Bumek [7]
3 years ago
5

Identify both the cellular structure that assembles these proteins and the kinds of molecules that are used as the building bloc

ks of protein
Chemistry
1 answer:
Blizzard [7]3 years ago
7 0
The basic building blocks of proteins are the amino acids. There are 20 amino acids in a protein that we consume and the protein in our body. These amino acids link together to form large molecules. The 20 amino acids are divided into two groups called the essential and non-essential amino acids.
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How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point?
kolezko [41]

<u>Answer:</u>

<u>For a:</u> The volume of HCl needed is 4.52 mL

<u>For b:</u> The volume of HCl needed is 25.63 mL

<u>For c:</u> The volume of HCl needed is 43.33 mL

<u>Explanation:</u>

To calculate the volume of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base

  • <u>For a:</u>

We are given:

n_1=1\\M_1=0.105M\\V_1=?mL\\n_2=1\\M_2=9.50\times 10^{-2}M=0.00950M\\V_2=50.0mL

Putting values in above equation, we get:

1\times 0.105\times V_1=1\times 0.00950\times 50\\\\V_1=\frac{1\times 0.00950\times 50}{1\times 0.105}=4.52mL

Hence, the volume of HCl needed is 4.52 mL

  • <u>For b:</u>

We are given:

n_1=1\\M_1=0.105M\\V_1=?mL\\n_2=1\\M_2=0.117M\\V_2=23.0mL

Putting values in above equation, we get:

1\times 0.105\times V_1=1\times 0.117\times 23\\\\V_1=\frac{1\times 0.117\times 23}{1\times 0.105}=25.63mL

Hence, the volume of HCl needed is 25.63 mL

  • <u>For c:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}

Given mass of NaOH = 1.40 g

Molar mass of NaOH = 40 g/mol

Volume of solution = 1 L

Putting values in above equation, we get:

\text{Molarity of NaOH solution}=\frac{1.40}{40\times 1}\\\\\text{Molarity of NaOH}=0.035M

We are given:

n_1=1\\M_1=0.105M\\V_1=?mL\\n_2=1\\M_2=0.035M\\V_2=130mL

Putting values in above equation, we get:

1\times 0.105\times V_1=1\times 0.035\times 130\\\\V_1=\frac{1\times 0.035\times 130}{1\times 0.105}=43.33mL

Hence, the volume of HCl needed is 43.33 mL

6 0
3 years ago
Based on properties of elements in the periodic table, which element is the best conductor of thermal energy?.
mojhsa [17]

Answer:

Silver

Explanation:

Silver has the highest thermal conductivity of any element and the highest light reflectance.

7 0
2 years ago
How do i find a ionic formula? <br><br>for example Ca2+ &amp; S2-​
jeka94

Example #1 write the chemical formula for Calcium Oxide

Step 1

-Find the Atomic symbol of the metal and non-metal on the periodic table

CaO

Step 2

Find the charges for Calcium and Oxygen

which are Ca 2+ and O 2-

Step 3

Balance out the charges

They are already balanced out

Here´s the chemical formula for Calcium Oxide

CaO

Example 2 write the chemical formula for Aluminum Oxide

Step 1

-Find the Atomic symbol of the metal and non-metal on the periodic table

A

l

O

Step 2

Find the charges for Aluminum and Oxygen

Which are Al 3+ and O 2-

Step 3

Balance out the charges

You need 2 Aluminum and 3 Oxygen to balance the charges

Al 3+ O 2-

Al 3+ O 2-

= 6 + O 2-

= 6-

Step 4

If you need more then one element to balance out the charges you identify that by using subscripts

Heres your chemical formula for Aluminum Oxide

Al_{2} O_{3}

8 0
3 years ago
Determine la cantidad aproximada de nitrato potásico (NaNO3) que habrá que mezclar con 150 g de agua para obtener una disolución
hammer [34]

Answer:

Determine the approximate amount of potassium nitrate (NaNO3) that must be mixed with 150 g of water to obtain a saturated solution at 10ºC.

A) 80 g

B) 40 g

C) 120 g

D) 160 g

4 0
3 years ago
How does an object become negatively charged?
Vadim26 [7]

An object becomes negatively charged when it gains electrons, because electrons have a negative charge.

3 0
3 years ago
Read 2 more answers
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