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3 years ago

CAN YAL PLEASE HELP ME WITH THIS THAN YOUUUUU WILL MARK YOU AS BRAINLIST

Chemistry

2 answers:

Anuta_ua [19.1K]3 years ago

4 0

Answer:

the flow of charged particles found in an atom

Explanation:

ipn [44]3 years ago

4 0

Answer:

A. The flow of charged particles found in an atom

Explanation:

1. The movement of an object can be considered <em>energy</em> but unless powered by an outside force (such as a solar panel), it's only energy.

2. The change of one energy form to another simply relates to its name. For example, a ball on top of a hill has potential energy. When it begins to roll down the hill, that potential energy converts to kinetic energy. However, energy is not electricity. Instead, electricity is a type of energy.

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What is the hydroxide ion concentration of a solution with a ph of 8. 25?

miss Akunina [59]

The concentration of hydroxide ion of a solution with a pH of 8. 25 is 1.77× $10^{6}$ M

Calculation,

The pH of a solution tells us about concentration of the $H^{+$ ion ( proton ) in solution. However, if we know the value of pH , we can calculate pOH with the help of pH and from pOH we can find concentration of hydroxide ions in the solution.

pH + pOH = 14

8. 25 + pOH = 14

pOH = 14 - 8. 25 = 5.75

Since, pH = -㏒[ $H^{+$ ]

Similarly, pOH = -㏒[ $OH^{-$ ]

If pOH = 5.75 , that means that -㏒[ $OH^{-$ ] = 5.75 ,which means that,

[ $OH^{-$ ] = $10^{-5.75}$ = 1.77× $10^{6}$ .

So, we know that the concentration of the $OH^{-$ ions in the solution with pH of 8.25 is 1.77× $10^{6}$ Molar

to learn more about hydroxide ion

brainly.com/question/25883474

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5 0

1 year ago

What is the percent enantiomeric excess (ee) of a mixture that has 86% of one enantiomer and 14% of the other

solniwko [45]

Answer:

86% - 14% = 72%

Explanation:

6 0

3 years ago

Based upon the mass of baking soda (NaHCO3) and using an excess of HCl in this experiment, you will 1) determine the mass of CO2

weqwewe [10]

Equation of reaction

NaHCO3 + HCl ---------> NaCl + H2O + CO2(g)

1)The mass(actual yield) of CO2 can be gotten by isolating it from other products and getting its mass.

Assume 1.0g of CO2 was gotten as a product of the experiment

2) For the theoretical yield

The mass of NaHCO3 was not stated, but for the purpose of this solution, I would assume 2g of NaHCO3 was used for the experiment. You can substitute any parameter by following the steps I follow

Number of mole of NaHCO3 = Mass of NaHCO3/ Molar Mass of NaHCO3

Number of mole of NaHCO3 = 2/84.01 = 0.0238 moles

1 mole of NaHCO3 yielded 1 mole of CO2

0.0238 moles of NaHCO3 will yield 0.0238 moles of CO2

Mass of CO2 = Number of moles * Molar Mass

Mass of CO2 = 0.0238 * 44 = 1.0472g

Theoretical yield of CO2 = 1.0472 grams

3) Percentage yield of CO2 = Actual yield/Theoretical yield *100%

Percentage yield of CO2 = 1.0/1.0472 *100

Percentage yield of CO2 = 95.49%

8 0

3 years ago

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Im the only noble gas with 2 electrons

iris [78.8K]

Answer:

Helium

Explanation:

8 0

3 years ago

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Is it possible to transfer heat from a cold reservoir to a hot reservoir?

tankabanditka [31]

Answer is: B.) Yes, if work is done, this transfer process can take place.

For example, air conditioner involves a cyclic process that transfers heat from a cold reservoir to a hot reservoir, but with use of electricity.

Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.

The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

8 0

4 years ago

Read 2 more answers