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2 years ago

Which statement best describes the relationship between kinetic energy, mechanical energy, and potential energy?

Chemistry

1 answer:

Luba_88 [7]2 years ago

5 0

Answer:

Explanation:

because kinetic and potential are both parts of mechanical energy

you should know we learned it in class

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Use the data to answer the questions that follow a. Determine the rate law

Elenna [48]

Answer:

To determine the rate law from a table, you must mathematically calculate how differences in molar concentrations of reactants affect the reaction rate to figure out the order of each reactant. Then, plug in values of the reaction rate and reactant concentrations to find the specific rate constant.

Explanation:

hope it is helpful for you

3 0

3 years ago

Read 2 more answers

To what volume should you dilute 50.0 ml of a 5.00-m ki solution so that 25.0 ml of the diluted solution contains 3.05 g of ki?

sammy [17]

TheThe volume should be added in dilute is 3.24L.

<h3>What is Molarity? </h3>

Molarity is the amount of a substance in a certain volume of solution. It is defined as the moles of solute per litre of a solution.

Molarity = no of moles / Volume (L)

Where the unit of Molarity is M or moles/ L .

We have given here ,

Molarity→5M

Volume →50 ml

Vol2→25.0 ml

weight of the K I is 3.05 g and molar mass of KI is 166 g/ mol.

M1V1=M2V2

M2= no of moles of KI / Volume

M2 = 3.05×1000/ 25×166

M2→ 0.73M

V2→5×50×1000/ 0.73

V2→ 3.24 L

The volume of the solution will be 3.24 L.

to learn more about Molarity click here brainly.com/question/8732513

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6 0

2 years ago

Compared to the mass and the penetrating power of an alpha particle, a beta particle has(1) less mass and greater penetrating po

seropon [69]

Answer is (1) - less mass and greater penetrating power.

Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.

8 0

3 years ago

Read 2 more answers

How are the properties of elements determined

Andrew [12]

The properties of elements are determined by their group/family. Usually, its the area they are located on the periodic table. The valence electrons also determine reactivity, etc.

4 0

4 years ago

Read 2 more answers

The element iridium exists in nature as two isotopes: 191Ir has a mass of 190.9606 u, and 193Ir has a mass of 192.9629 u. The av

nlexa [21]

<u>Answer:</u> The percentage abundance of $_{77}^{191}\textrm{Ir}$ and $_{77}^{193}\textrm{Ir}$ isotopes are 37.10% and 62.90% respectively.

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

Let the fractional abundance of $_{77}^{191}\textrm{Ir}$ isotope be 'x'. So, fractional abundance of $_{77}^{193}\textrm{Ir}$ isotope will be '1 - x'

<u>For $_{77}^{191}\textrm{Ir}$ isotope:</u>

Mass of $_{77}^{191}\textrm{Ir}$ isotope = 190.9606 amu

Fractional abundance of $_{77}^{191}\textrm{Ir}$ isotope = x

<u>For $_{77}^{193}\textrm{Ir}$ isotope:</u>

Mass of $_{77}^{193}\textrm{Ir}$ isotope = 192.9629 amu

Fractional abundance of $_{77}^{193}\textrm{Ir}$ isotope = 1 - x

Average atomic mass of iridium = 192.22 amu

Putting values in equation 1, we get:

$192.22=[(190.9606\times x)+(192.9629\times (1-x))]\\\\x=0.3710$

Percentage abundance of $_{77}^{191}\textrm{Ir}$ isotope = $0.3710\times 100=37.10\%$

Percentage abundance of $_{77}^{193}\textrm{Ir}$ isotope = $(1-0.3710)=0.6290\times 100=62.90\%$

Hence, the percentage abundance of $_{77}^{191}\textrm{Ir}$ and $_{77}^{193}\textrm{Ir}$ isotopes are 37.10% and 62.90% respectively.

8 0

3 years ago