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2 years ago

Choose the best explanation for chemical reactions not to produce radioactive particles.

Chemistry

2 answers:

Archy [21]2 years ago

5 0

Answer:

Only electrons are involved in chemical reactions.

Explanation:

amid [387]2 years ago

4 0

"Only electrons are involved in chemical reactions" is the statement among the following choices given in the question that is the best explanation for chemical reactions not to produce radioactive particles. The correct option among all the options that are given in the question is the third option or option "C".

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The answer has to be 3 to 5 sentences for me to get full credit. ❤❤

shusha [124]

The periodic table is an important but rather dry scientific tool. It lists all the chemical elements, ordered by their atomic numbers. Elements with similar behavior are grouped in the same column (called a group), with metals generally on the left and non-metals (gases) on the right. Rows are called “periods” - hence, periodic table.

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3 years ago

What is the pH of a 0.75 M HNO3 solution

Sauron [17]

Hello!

The dissociation reaction of HNO₃ is the following:

HNO₃ → H⁺ + NO₃⁻

This is a strong acid, so the concentration of HNO₃ would be the same as the concentration of H⁺. The formula for pH is the following:

$pH=-log([H_3O^{+}])=-log(0,75M)=0,12$

So, the pH would be 0,12

Have a nice day!

4 0

2 years ago

Read 2 more answers

Plz help me with this question

miskamm [114]

Answer:

<h2>Here is your answer. I hope it will help you . </h2>

5 0

2 years ago

Hydrogen and oxygen react to form water. At an atomic level, how do we know that a chemical reaction has occurred

makkiz [27]

Answer: Bubbles are evidence that a chemical reaction took place because cause formation of a precipitate. Bubbles are evidence that a chemical reaction took place because they indicate the formation of gas as a new product.

Explanation:

3 0

2 years ago

PLZ ANSWER

satela [25.4K]

Answer:

B. The student should model a convex lens because it directs light toward the center of the lens.

Explanation:

Lenses are optical devices that work on the principle of refraction.

Refraction is a phenomenon of wave (such as light waves) that occurs when a ray of light crosses the interface between two mediums with different optical density: when this occurs, the ray of light bends and change speed.

In particular, there are two types of lenses:

Convex lenses: these lenses are curved outward at their center, therefore the rays of light coming from infinite distance (parallel to the axis) are all focused into a point of the lens, called principal focus. Therefore, a convex lens directs lights towards this point.
Concave lenses: these lenses are curved inward at their center, therefore the rays of light coming from infinite distance are bent away from the principal focus. Therefore, this is a diverging lens, as the rays of light do not converge.

So, the correct answer is

B. The student should model a convex lens because it directs light toward the center of the lens.

7 0

3 years ago