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3 years ago

What type of atoms typically loses an electron?

Chemistry

1 answer:

expeople1 [14]3 years ago

6 0

Answer:Transition metals

Explanation: Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions. Metals that are located in column 1A of the periodic table form ions by losing one electron.

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Reaction Rates

inn [45]

Answer:

PART A 1st order in A and 0th order in B

Part B The reaction rate increases

Explanation:

The rate law of the arbitrary chemical reaction is given by

$-r_A=k\times\left[A\right]^\alpha\times\left[B\right]^\beta\bigm$

Replacing for the data

Expression 1 $0.00639=k\times{0.12}^\alpha\times{0.22}^\beta$

Expression 2 $0.01280=k\times{0.24}^\alpha\times{0.22}^\beta$

Expression 3 $0.00639=k\times{0.12}^\alpha\times{0.11}^\beta$

Making the quotient between the fist two expressions

$\frac{0.00639}{0.01280}=\left(\frac{0.12}{0.24}\right)^\alpha$

Then the expression for $\alpha$

$\alpha=\frac{ln\frac{0.00639}{0.01280}}{ln\frac{0.12}{0.24}}=1\bigm$

Doing the same between the expressions 1 and 3

$\frac{0.00639}{0.00639}=\left(\frac{0.22}{0.11}\right)^\beta$

Then

$\beta=\frac{ln\frac{0.00639}{0.00639}}{ln\frac{0.22}{0.11}}=0\bigm$

This means that the reaction is 1st order respect to A and 0th order respect to B .

By the molecular kinetics theory, if an increment in the temperature occurs, the molecules will have greater kinetic energy and, consequently, will move faster. Thus, the possibility of colliding with another molecule increases. These collisions are necessary for the reaction. Therefore, an increase in temperature necessarily produces an increase in the reaction rate.

4 0

3 years ago

What varieties of matter may be the constituents in mixtures?

vodka [1.7K]

Answer: two or more different pure substances, which may be elements or compounds.

Explanation:

The term varieties of matter is kind of ambiguos since it is not defined.

The best approach to the question is to think of matter as it can be classified into to kinds: pure substaces and mixtures.

Elements and compounds are pure substances.

Elements are pure substances constituted by only one kind of atoms. An element cannot be divided into simpler substances either by physical or chemical media.

A compound is a chemical combination of two or more different elements. A compound can be divided into simpler substances by chemical reactions, but not by physical media. The properties of compounds are different of those of the elements of which they are constituted. The composition of a compoind (ratio among its elements) is fixed.

A mixture is the physical combination of two or more pure substances (either different elements or compounds) which can be mixed in any proportion. This is, its composition is variable. The substances that form the mixture can be separated by physical media.

7 0

3 years ago

___ Au₂S₃ + ___ H₂ → ___ Au + ___ H₂S

Natalija [7]

Answer:

2Au₂S₃ + 6H₂ → 4Au + 6H₂S

Explanation:

Balancing:

2Au₂S₃ + 6H₂ → 4Au + 6H₂S

6 0

3 years ago

Which of the following procedures increases the average kinetic energy

Sever21 [200]

Answer:

Cooling Steam at 100 C to ice at 0 C

Explanation:

8 0

3 years ago

How is a scientific law different from other laws in society?

Lemur [1.5K]

Answer:

The answer will be A

Explanation:

A scientific law is based on repeated experiments or observations, that describe or predict a range of natural phenomena. A scientific law is something that is unexpected

7 0

4 years ago

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