CHEMISTRY HIGH SCHOOL

Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?A.
chromosome


B.
chloroplast


C.
Golgi body


D.
ribosome

Answers

Answer 1
Answer: In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, andprotein combine to form a nucleoprotein called a ribosome. The ribosomeserves as the site and carries the enzymes necessary for proteinsynthesis. They are often takes the shape of small round particlesattached in the endoplasmic reticulum. The ribosome attaches itself to m-RNAand provides the stabilizing structure to hold all substances in position asthe protein is synthesized. Several ribosomes may be attached to a single RNAat any time.   
Answer 2
Answer: i believe that the answer is B , chloroplast. you can work out the problem any other wat too.

i hope this helps

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Which of the following pieces of laboratory equipment is not directly used to make measurements?a. test tube
b. graduated cylinder
c. ruler
d. thermometer

Answers

Test are not directly used to make measurements, I mean you could use them to put 4 mL of a substance in, but not to measure out 4 mL, like with graduated cylinders. Rulers can be used to measure the length of something, like the number of inches. And a thermometer will help you measure the temperature of something.

Answer:

A. test tube

Explanation:

edg 2022

What is the mass in grams of 1.73 moles CaH2

Answers

mass in grams = no. of moles multiply by molar mass
molar mass is 42 so by putting value we get 72.66 grams...

The tetragonal crystal system below possesses how many faces?2 faces

4 faces

6 faces

8 faces

Answers

The tetragonal crystal system below possesses two faces. The two axes are of equal length and are in the same plane, the main axis is either longer or shorter and all three intersect at right angles. The Crystal shapes include four-sided prisms and pyramids, hexacisochedron. 

It's important to match your exercise shoes with the type of exercise in which you will be participating.

Answers

It's important to match your exercise shoes with the type of exercise in which you will be participating. This is to avoid muscle cramps and strains when you are moving. It also provides room for movement for your feet as it will move around a lot.

Answer:

true

Explanation:

When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided thatA) it is a reactant in one intermediate reaction and a catalyst in the other reaction.
B) it is a product in one intermediate reaction and a catalyst in the other reaction.
C) it is a reactant in one intermediate reaction and a product in the other reaction.
D) it is a reactant in both of the intermediate reactions.

Answers

Answer: Option (C) is the correct option.

Explanation:

When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that   it is a reactant in one intermediate reaction and a product in the other reaction.

For example,

2Al(s) + 2KOH(aq) + 6H_(2)O\rightarrow 2KAl(OH)_(4)(aq)+ 3H_(2)(g) ....(1)

2KAl(OH)_(4)(aq) + 4H_(2)SO_(4)(aq) + 6H_(2)O(l)\rightarrow 2KAl(SO_(4))_(2)(aq)+ 12H_(2)O(s)  .........(2)

Cancelling the common species in both the equations as follows.

2Al(s) + 2KOH(aq) + 6H_(2)O\rightarrow \not{2KAl(OH)_(4)(aq)}+ 3H_(2)(g)

\not{2KAl(OH)_(4)(aq)}+ 4H_(2)SO_(4)(aq) + 6H_(2)O(l)\rightarrow 2KAl(SO_(4))_(2)(aq)+ 12H_(2)O(s)

Therefore, on addition we get the equation as follows.

2Al(s)+ 2KOH(aq) + 4H_(2)SO_(4)(aq) + 22H_(2)O(l)\rightarrow 3H_(2)(g)+ 2KAl(SO_(4))_(2) + 12H_(2)O(s)
The right answer for the question that is being asked and shown above is that: "C) it is a reactant in one intermediate reaction and a product in the other reaction." When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that it is a reactant in one intermediate reaction and a product in the other reaction.

What is the difference between conductors and insulators

Answers

Explanation:

Conductors and insulators are two types of materials that differ in their ability to conduct electrical current. Here are the key differences between conductors and insulators:

**Conductors:**

1. **Electrical Conductivity:** Conductors are materials that have high electrical conductivity. This means they allow the easy flow of electric charge, typically in the form of electrons. Metals like copper, aluminum, and silver are excellent electrical conductors.

2. **Free Electrons:** Conductors have a large number of free electrons that are loosely bound to their atomic structure. These free electrons can move easily when a voltage is applied, creating an electric current.

3. **Low Resistance:** Conductors have low electrical resistance, which means they offer little opposition to the flow of electric current.

4. **Used for Wiring:** Conductors are commonly used in electrical wiring and circuits to transmit electricity efficiently.

**Insulators:**

1. **Electrical Insulation:** Insulators are materials that have low electrical conductivity. They do not allow the easy flow of electric charge. Examples of insulators include rubber, glass, plastic, and wood.

2. **Tightly Bound Electrons:** Insulators have tightly bound electrons in their atomic structure. These electrons are not free to move, so they do not contribute to the flow of electric current.

3. **High Resistance:** Insulators have high electrical resistance, which means they strongly resist the flow of electric current.

4. **Used for Insulation:** Insulators are used to isolate and protect conductors in electrical systems. They are employed as insulating materials in wires, cables, and electrical devices to prevent electrical leakage and ensure safety.

In summary, conductors allow electric current to flow easily due to the presence of free electrons and low resistance, while insulators inhibit the flow of electric current because their tightly bound electrons and high resistance prevent the movement of charge. These differences make conductors suitable for carrying electricity, while insulators are used to insulate and protect conductive materials in electrical systems.
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