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Gnom [1K]
3 years ago
7

1. The Russian chemist who designed the first accepted version of periodic table in the 1800s was ______________.

Chemistry
1 answer:
vekshin13 years ago
7 0

1. Dimitri Mendeleev

2. Increasing atomic number

3. Phosphorus or P

4. ?

5. Boron or B

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Cole is working with radioactive particles and has set up a shield made of aluminum for protection. Which of the following will
koban [17]

Answer:

C.) Alpha, beta, and gamma particles

Explanation:

A dense shield of aluminium can protect Cole from all the listed types of radiation produced from the radioactive particles.

A radioactive protector has very unique and specie ability to contain and prevent the movement of radiations of any types from going into the body.

The strongest and most penetrating radiations are the gamma rays. Any material that can prevent the movement of these rays can halt alpha and beta particles too.

An aluminium shield is made up of multiple layers of aluminium stacked together and it provides enough resistance.

6 0
3 years ago
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Water freezes at____.
Aleks04 [339]
0 C
32 F
Water freezes

7 0
3 years ago
A + B = AB
Ahat [919]

The greatest amount of AB would be produced if the equilibrium constant of the reaction is equal to 1.0 \;X \;10^5. Hence, option D is correct.

<h3>What is an equilibrium constant?</h3>

A number that expresses the relationship between the amounts of products and reactants present at equilibrium in a reversible chemical reaction at a given temperature.

The equilibrium constant expression is a mathematical relationship that shows how the concentrations of the products vary with the concentration of the reactants.

If the value of K is greater than 1, the products in the reaction are favoured. If the value of K is less than 1, the reactants in the reaction are favoured.

Hence, option D is correct.

Learn more about the equilibrium constant here:

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7 0
2 years ago
Match the vocabulary with the definitions.
Fiesta28 [93]

1: Decomposition reaction
2: Combination reaction
3: product
4: Reactant
8 0
2 years ago
Covalent bonds are formed when electrons are
lubasha [3.4K]
Covalent bonds formed when two atoms share an electron, as opposed to an Ionic bond where one atom takes an electron(or two) from another atom.
5 0
3 years ago
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