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jolli1 [7]
3 years ago
12

Scientists in 1.legal services 2.research and development 3.marketing 4.corporate management

Chemistry
1 answer:
Maslowich3 years ago
4 0

2. research and development

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Which of the following statements are true about chemical substances and processes? Check all that apply.
kolbaska11 [484]

Answer:

Chemical processes can be types of biological processes.

Chemical substances can be found in the bloodstream.

Chemical processes work to maintain homeostasis.

Explanation:

The listed three choices are true statements about chemical processes. Chemical processes brings about chemical change and they occur in biological organisms.

Some examples of chemical processes in organisms is metabolism of food.

Also, chemical processes can help regulate the internal environment of an organism. It is known that chemical reactions at certain times acts a thermoregulators in the body.

Examples of chemical substances in the body are glucose, amino acid, proteins etc.

8 0
2 years ago
A 50.0 50.0 mL solution of 0.127 0.127 M KOH KOH is titrated with 0.254 0.254 M HCl HCl. Calculate the pH of the solution after
Brilliant_brown [7]

Answer:

Explanation:

THE CORECT QUESTION

A 50.0 mL solution of 0.127 M KOH is titrated with 0.254 M HCl. Calculate the pH of the solution after the addition of each of the given amounts of HCl.

SOLUTION

Get the concentration of the HCl first using titration formula

CA X V A / CB VB = NA/ NB

Equation of reation; KOH + HCl => KCl + H2O

CA = 0.254 M

CB = 0.127

VA = 1/0.254 = 3.937

CA (after the addition) = 0.127 x 50 / 3.937

                                     = 1.612 M

But pH = - Log[hydrogen ion]

            = -log 1.612

            =

8 0
3 years ago
What is the volume of a sample that has a mass of 20 grams and density of 4 g/mL?
balandron [24]

Answer:

<h2>5 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{20}{4}  \\

We have the final answer as

<h3>5 mL</h3>

Hope this helps you

7 0
3 years ago
45.8 g of NaCl is dissolved in 500. mL of a water (d = 1.00 g/mL) and is placed in the freezer at -1 °C overnight. Which stateme
mel-nik [20]

Answer:

i honestly don't know.

Explanation:

4 0
3 years ago
Which part of the amino acid helps identify features that differentiate one amino acid from another
Natasha_Volkova [10]
The part of the amino acid which helps to identify features that differentiate one amino acid from another is the SIDE CHAIN OF EACH AMINO ACID.
Amino acids are made up of five basic parts, these are:
1. A central carbon atom
2. A hydrogen atom
3. An amino group
4. A carboxyl group and 
5. A R group, also known as a side chain.
The side chain distinguishes one amino acid from the other; different amino acids have different side chains.
6 0
3 years ago
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