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3 years ago

The measure of the number of atoms in one element that will combine with an atom of another element is

Chemistry

1 answer:

cupoosta [38]3 years ago

5 0

The correct answer is:

C. valence.

Explanation:

The valence or valency of an element is a stratagem of its connecting power with other atoms when it makes chemical compounds or molecules.

A valence electron is an outer shell electron that is connected with an atom, and that can compete in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond provide one valence electron in order to form a shared pair

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A ball is dropped from a height of 20 feet onto a trampoline. When it hits the trampoline, it creates a 2-foot depression in the

Alisiya [41]

The trampoline's elastic potential energy is transformed into kinetic energy when it returns to its original position.
The ball's gravitational potential energy become kinetic energy when it drops. Pls give brainliest

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3 years ago

The decomposition of hydrogen peroxide was studied, and the following data were obtained at a particular temperature: Time (s) (

harina [27]

Answer:

Part a: The rate of the equation for 1st order reaction is given as $Rate=k[H_2O_2]$

Part b: The integrated Rate Law is given as $[H_2O_2]=[H_2O_2]_0 e^{-kt}$

Part c: The value of rate constant is $7.8592 \times 10^{-4} s^{-1}$

Part d: Concentration after 4000 s is 0.043 M.

Explanation:

By plotting the relation between the natural log of concentration of $H_2O_2$ , the graph forms a straight line as indicated in the figure attached. This indicates that the reaction is of 1st order.

Part a

Rate Law

The rate of the equation for 1st order reaction is given as

$Rate=k[H_2O_2]$

Part b

Integrated Rate Law

The integrated Rate Law is given as

$[H_2O_2]=[H_2O_2]_0 e^{-kt}$

Part c

Value of the Rate Constant

Value of the rate constant is given by using the relation between 1st two observations i.e.

t1=0, M1=1.00

t2=120 s , M2=0.91

So k is calculated as

$-k(t_2-t_1)=ln{\frac{M_2}{M_1}}\\-k(120-0)=ln{\frac{0.91}{1.00}}\\k=\frac{-0.09431}{-120}\\k=7.8592 \times 10^{-4} s^{-1}$

The value of rate constant is $7.8592 \times 10^{-4} s^{-1}$

Part d

Concentration after 4000 s is given as

$-k(t_2-t_1)=ln{\frac{M_2}{1.0}}\\-7.8592 \times 10^{-4}(4000-0)=ln{\frac{M_2}{1.00}}\\-3.1437=ln{\frac{M_2}{1.00}}\\M_2=e^{-3.1437}\\M_2=0.043 M$

Concentration after 4000 s is 0.043 M.

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3 years ago

Some redwood trees reproduce both sexually and asexually.

valentinak56 [21]

B. It increases the genetic diversity. Sexual reproduction provides genetic diversity because the egg and sperm produced contain different combinations.

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3 years ago

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What is an open system?

NeTakaya

Answer:

An open system is :-

B. A system that allows energy and mass to move in and out of it.

Example :-

Water boiling in a pot on a stove. (Without lid).

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2 years ago

Which of the following is likely to have the lowest viscosity? hot oil room temperature oil room temperature water below room te

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4 years ago

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