Describe what must be happening to the particles above as the change is happening

Answer: B

Explanation:

The rate law is the mathematical equation that describes how reactant concentration changes as a function of time. A law such as "Rate = k*[A]*[B]" means that, for each liter-equivalent of the reactant(s) A, there are k liters of reactant B. The law also dictates the molarity (and thus partial pressure) for each component in solution.

Answer:

The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert. Argon atoms do not combine with one another; nor have they been observed to combine chemically with atoms of any other element.So argon is an inert gas

Answer:

because argon have 8 electrons in there outmost shell

which is enough to make it stable

Answer:

C

Explanation:

To find the new pressure, we will use this formula: P₁V₁/T₁ = P₂V₂/T₂

P₁ = Original pressure (755.2)

V₁ = Original volume (188.5)

T₁ = Original temperature in kelvins (26.7 + 273.15 = 299.85)

P₂ = Final Volume (?)

V₂ = Final volume (210.5)

T₂ = Final temperature in kelvins (165.2 + 273.15 = 438.35)

Here is our equation

(755.2)(188.5)/(299.85) = (210.5)P₂/(438.35)

Hopefully, you have a calculator handy because this equation will end up looking like this:

474.75471 = (0.48021)P₂

Divide both sides by the coefficient

474.75471/0.48021 = (0.48021)P₂/0.48021

P₂ = 988.64

Answer:

When an element is oxidized, it loses electrons

Answer:

The last option is the correct answer.

Explanation:

When an element is oxidized, it loses electrons. But when an element is reduced, it gains electrons. This is the basis of redox reactions.

However, an oxidizing agent oxidizes something else, and gets reduced, therefore gaining electrons. Meanwhile, a reducing agent reduces something else, and gets oxidized in the process, losing its own electrons.

HCOOH is an acid, KCL is a Salt, NaOH is a base.

An acid is defined as a substance which when dissolved in water produces hydronium ion (H3O+), neutralizes bases, tastes sour and turns blue litmus red.

Acids incldes:

A Base is a substance which in its aqueous solution  produces hydroxyl ions (OH–), neutralizes acids , tastes bitter and turns red litmus blue

Bases incldes:

A Salt is an ionic compound produced from the  neutralization reaction of acids and bases. it is neutral substance and has no effect on  litmus.

The folloing can  be classifed as other or in aqueous solution as :

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Answer:  This is only a guess:  The "following chemical formula:      " doesn't appear on my screen.  But since you mentioned Mg and Cl, I would guess MgCl2

Explanation:  Mr loses 2 electrons while each Cl gains one each:  Two chlorines for every 1 magnesium.

Answer:

cm

Explanation:

for short measurements

A scientist who is studying cancer with the goal of finding an effective treatment is doing applied research.

Applied research refers to scientific investigations that are conducted with the specific purpose of solving practical problems or improving existing technologies. In the case of cancer research, the scientist is aiming to find a treatment that can be directly applied to patients in order to combat the disease.

In contrast, pure research, also known as basic or fundamental research, is conducted to gain a deeper understanding of a particular phenomenon without any immediate practical application in mind. Pure research aims to expand scientific knowledge and explore new theories or concepts. While pure research may indirectly contribute to the development of applied research, its primary goal is to advance our understanding of the natural world.

In summary, a scientist studying cancer with the goal of finding an effective treatment is engaged in applied research, as they are conducting research with the intention of solving a specific problem and developing practical solutions for the benefit of cancer patients.

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Answer:

5H²O= 23

ZnCl²=135

have a great day

Answer:B

Explanation: i got it right

The scientists use weather balloons to measure up to about 100,000 feet of elevation. The correct option is D.

A weather balloon, also known as a sounding balloon, is a balloon that carries instruments aloft to transmit data on atmospheric pressure, temperature, humidity, and wind speed using a small, disposable measuring device known as a radiosonde.

Weather balloons can travel up to 24 miles (39 kilometres) before bursting, and a payload can land (via parachute) up to 75 miles (120 kilometres) away, depending on wind conditions at the launch site.

If the balloon is flexible, it will expand as it rises to lower air pressure altitudes.

To prevent them from popping, weather balloons are only partially filled when released.

Thus, the correct option is D.

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Answer:

number must be 0000.999

Answer:

Carbon has an ability of catenation which other group IV elements lack.

Explanation:

Catenation is the ability for an element to form multiple bonds with other elements leading rise to long chains of compounds.

An example is organic compounds.

[tex].[/tex]

Answer:

a. Are potentially dangerous and should not be worn.

Answer:

the answer is b im pretty sure

Explanation:

sorry if im wrong

The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex]. The empirical formula is also known as the simplest basic formula.

A molecular formula is indeed a formula derived with molecules that corresponds to the total number of distinct atoms in the molecule of a chemical. A subscript inside a molecular formula denotes the number for each type of atoms in the substance's molecule.

The empirical formula provides the most basic formula for something like a compound, defined by the ratio between subscripts of the formula's smallest entire number of constituents. It is also known as the simplest basic formula. An empirical formula is the formula of a material given with the least integer subscript. The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

Therefore, the molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

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Answer:

•1. Make an Observation

•2. Ask a question about ____

•3. Make a hypothesis (educated guess)

•4. Make a hypothesis-based prediction

•5. Test your hypothesis

•6. Graph the results and Iterate.

Answer:

The steps of the scientific method are:-

●Report the Results.

●Ask a Question.

●Test the prediction.

●Make an observation.

●Form a hypothesis, or testable explanation.

●Make a prediction based on the hypothesis.

Answer: Writing Formulas for Ionic Compounds Using Nomenclature Another important concept to master is the ability to write a chemical formula using the compound's systematic name.

Explanation:

Planck's constant =

6.62607004 × 10-34 m2 kg / s

Explanation:

Step by Step explanation

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency. Wikipedia

Answer:

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency.

Plancks constant =

6.62607004 × 10-34 m2 kg / s

Answer:

Fine chemicals are used as starting materials for specialty chemicals, particularly pharmaceuticals, biopharmaceuticals and agrochemicals. ... The term "fine chemicals" is used in distinction to "heavy chemicals", which are produced and handled in large lots and are often in a crude state.

Explanation:

The intensive properties are useful for identifying a substance because it does not depend upon the amount of substance present in the sample.

The points regarding properties are the following:

Therefore, the correct answer is the A. They do not depend on the amount of substance you have.

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 Answer:    67%

Explanation:  The weighted averages of the two isotopes must add to 131.01.  Let Y be the percentage of isotope 129.  Then (1-Y) will be the percentage of isotope 132.  The weighted average of each is:

129:   129Y

132:    132(1-Y)

Their sum is equal to 131.01

129Y + 132(1-Y) = 131.01

Y = 0.33, or 33%

(1-Y) = 0.67, or 67%

Check:  129*(0.33) = 42.57

             132*(0.67) = 88.44

                     Sum =   131.01  It checks OK  The 132 isotopes is 67% of the sample.

Considering the definition of atomic mass, isotopes and atomic mass of an element, the percent abundance of ¹³²X is 67%.

First of all, the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.

The same chemical element can be made up of different atoms, that is, their atomic numbers are the same, but the number of neutrons is different. These atoms are called isotopes of the element.

On the other hand, the atomic mass of an element is the weighted average mass of its natural isotopes. In other words, the atomic masses of chemical elements are usually calculated as the weighted average of the masses of the different isotopes of each element, taking into account the relative abundance of each of them.

In this case, you know:

Then, the average mass of X can be calculated as:

132 amu×y + 129 amu×( 1-y)= 131.01 amu

Solving, you can find the percent abundance of ¹³²X:

132 amu×y + 129 amu×1 - 129 amu×y= 131.01 amu

132 amu×y + 129 amu - 129 amu×y= 131.01 amu

132 amu×y - 129 amu×y= 131.01 amu - 129 amu

3 amu×y= 2.01 amu

y= 2.01 amu÷ 3 amu

y= 0.67= 67%

Finally, the percent abundance of ¹³²X is 67%.

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Answer:

b

Explanation:

there is 1000m in 1 km so the ans is literally just 145x1000 m which is 145000m

Answer:

B! 145,000

Explanation:

your welcome love!

Complete Question

A pycnometer is a glass apparatus used for accurately determining the density of a liquid. When dry and empty, a certain pycnometer had a mass of 27.056 g. When filled with distilled water at 25.0°C, it weighed 36.773 g. When filled with chloroform (a liquid once used as an anesthetic before its toxic properties were known), the apparatus weighed 41.451 g. At 25.0°C, the density of water is 0.99704 g/mL

-What is the volume of the pycnometer (mL)

We have that the volume of the pycnometer in mL is

[tex]V=9.111mL[/tex]

From the Question we are told that

Pycnometer mass of [tex]m_p=27.056 g.[/tex]

Temperature [tex]T=25 \textdegree[/tex]

Pycnometer filled with distilled water [tex]m_{pf}= 36.773 g[/tex]

Apparatus weighed [tex]w=41.451 g[/tex]

Density of water [tex]\rho= 0.99704 g/mL[/tex]

Generally the equation for Density  is mathematically given as

[tex]\rho=\frac{mass}{Volume}[/tex]

Since pycnometer is filled with water its volume can be defined by the volume of water in it

Therefore

Mass of water Pycnometer filled with distilled water-Pycnometer mass

[tex]M_w=36.773 -27.056\\\\M_w=9.084g[/tex]

Hence

[tex]V=\frac{9.084g}{0.99704 }[/tex]

[tex]V=9.111mL[/tex]

in conclusion

The volume of the Pycnometer in mL is

[tex]V=9.111mL[/tex]

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Answer:

elements

Explanation:

possibly elements

Answer:juhygjdkeExplanation:

Mendelevium is named for Dmitri Mendeleev who produced one of the first periodic tables.

Abelson first found neptunium in 1940 after uranium had been bombarded by neutrons from the cyclotron at Berkeley, California. ... The element was named after the planet Neptune, which is the first planet beyond Uranus.

Answer in explanation

Explanation:

neptunium was named after the discovery of the planet neptune in september 23 1846

mendelevium was named as dimitri mendeleev

The arrangement that orders the compounds by increasing boiling point based on predominant intermolecular force is; N2 < CO2 < NH3 < HF

The molecules that compose a substance are held together by intermolecular forces. The physical properties of a substance such as boiling points depends on the nature of intermolecular forces between substances. The greater the magnitude of intermolecular interaction between bonding atoms the higher the boiling point.

Nitrogen and CO2 molecules are only held together by weak dispersion forces.  However, CO2 has a higher boiling point than N2 because CO2 has a higher molecular mass than N2.

Nitrogen is less electronegative than fluorine hence the magnitude intermolecular interaction via hydrogen bonding in HF is greater than that in NH3 consequently, the boiling point of HF is higher than that of NH3.

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Answer:

conclusions i think i am not confirmed

Answer:

b-data

Explanation:

right on the unit test review on edge

brainliest???

Answer:

e

Explanation:

cm is not the unit of wave number out of the following.

Definition: Total number of wave cycles present in a unit distance is termed a wave number.

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Answer:

2477.6 cm³

Explanation:

Volume = length x width x height

Label in cm³

hi <3

compound are 2(or more) elements combined together

thus your answer will be picture I

hope this helps <3

Answer:

D

Explanation: