20 points to whoever can answer these 3 questions correctly
Pt. 3

True. active transport is used to move solutes against the concentration gradient.

Active transport is a cellular process that uses energy to move solutes against their concentration gradient, from an area of lower concentration to an area of higher concentration. This process requires the input of energy in the form of ATP (adenosine triphosphate) to drive the movement of molecules against their concentration gradient.

By utilizing specialized transport proteins embedded in the cell membrane, active transport allows the movement of ions, molecules, or other substances across the membrane against the natural flow dictated by diffusion. This mechanism enables the cell to maintain concentration gradients and perform essential functions such as nutrient uptake, ion transport, and waste removal.

In contrast, passive transport processes, such as simple diffusion or facilitated diffusion, move solutes along their concentration gradient, from higher to lower concentrations, without requiring energy expenditure. Active transport is a vital mechanism for maintaining homeostasis and ensuring the proper functioning of cells and organisms.

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Answer:

Protein.

Explanation:

Chains of polypeptides make up a protein molecule.

Answer:

36

Explanation:

I´m hoping this is correct

If you add 6 + 6 you get 12, multiply the 12 to get 24 and you multipy 6 times 2 to get 12 and add 12 to 24 to get 36.

Answer:

D

Explanation:

Because chemicals like uranium are created as wastes which is not good for the environment

The order of the reaction with respect to NO2 is x = 1, and the order of the reaction with respect to CO is y = 0.5.

No2 (g) + CO(g) → NO(g) + CO2(g) is the given chemical reaction to calculate the order of the reaction with respect to the following reactants according to the given experimental data as mentioned below:

Let's understand this in detail:

Order of reaction with respect to NO2:

We know that the rate of reaction is given by the formula as follows,

Rate = k[NO2]^x [CO]^yWhere,

k = Rate constant

[NO2] = Concentration of NO2

[CO] = Concentration of CO

x and y = Order of reaction with respect to NO2 and CO, respectively. The first experiment data is taken into account for calculating the order of reaction with respect to NO2 as follows:

1.44 x 10^-5 = k [0.263]^x [0.826]^y......(i)

The second experiment data is taken into account for calculating the order of reaction with respect to NO2 as follows:1.44 x 10^-5 = k [0.263]^x [0.413]^y......(ii)

Now, dividing equation (i) by equation (ii), we get

[0.826]^y/[0.413]^y = 1 => (2)^(2y) = 2 => 2y = 1 => y = 0.5

Substituting the value of y in equation (i), we get

1.44 x 10^-5 = k [0.263]^x [0.826]^0.5=> k = 0.015

Therefore, the order of the reaction with respect to NO2 is x = 1.

Order of reaction with respect to CO:

The first experiment data is taken into account for calculating the order of reaction with respect to CO as follows:

1.44 x 10^-5 = k [0.263]^x [0.826]^y......(i)

The third experiment data is taken into account for calculating the order of reaction with respect to CO as follows:

5.76 x 10^-5 = k [0.526]^x [0.413]^y......(ii)

Now, dividing equation (i) by equation (ii), we ge

t[0.826]^y/[0.413]^y = 2 => 2y = 1 => y = 0.5

Substituting the value of y in equation (i), we get1.44 x 10^-5 = k [0.263]^x [0.826]^0.5=> k = 0.015

Therefore, the order of the reaction with respect to CO is y = 0.5. Hence, the order of the reaction with respect to NO2 is x = 1, and the reaction with respect to CO is y = 0.5.

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A typical 8-ounce cup of coffee contains approximately \(2.94 * 10^{20\) caffeine molecules.

To calculate the number of caffeine molecules in a typical 8-ounce cup of coffee, we need to use the following steps:

Convert the mass of caffeine in the cup to moles using the molar mass of caffeine.

Molar mass of caffeine (C8H10N4O2) = 194.19 g/mol

Mass of caffeine in 8-ounce cup = 0.095 g

Number of moles of caffeine = 0.095 g / 194.19 g/mol = 0.000489 moles

Use Avogadro's number (\(6.022 * 10^{23\) molecules/mol) to convert moles to molecules.

Number of caffeine molecules = 0.000489 moles x \(6.022 *10^{23\) molecules/mol = \(2.94 * 10^{20\) molecules

Therefore, a typical 8-ounce cup of coffee contains approximately \(2.94 * 10^{20\) caffeine molecules.

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The light bulb will take approximately 2.9 x 10² seconds to consume 2.30 x 10² joules of energy.

To calculate the time it takes for the light bulb to consume a given amount of energy, we can use the formula:

Time (in seconds) = Energy Consumed / Energy Consumption Rate

Given that the energy consumption rate of the light bulb is 80.0 joules per second, and we want to find the time it takes for the light bulb to consume 2.30 x 10² joules of energy, we can substitute these values into the formula:

Time = (2.30 x 10² joules) / (80.0 joules per second)

Time = 2.875 x 10² seconds

Time ≈ 2.9 x 10² seconds

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The reaction between aqueous solutions of ammonia (NH3) and hydroiodic acid (HI) can be represented by the following balanced chemical equation:

NH3(aq) + HI(aq) → NH4I(aq)

To write the net ionic equation, we need to break down the aqueous compounds into their respective ions, considering only the species that participate in the chemical reaction. In this case, ammonia (NH3) does not ionize significantly in water, but hydroiodic acid (HI) dissociates completely to form ions:

NH3(aq) + H+(aq) + I-(aq) → NH4+(aq) + I-(aq)

The net ionic equation can be written by eliminating the spectator ions

NH3(aq) + H+(aq) → NH4+(aq)

Therefore, the net ionic equation for the reaction between aqueous solutions of ammonia and hydroiodic acid is:

NH3(aq) + H+(aq) → NH4+(aq).

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Answer:

friction

Explanation:

conduction doesn't really need much to start it. it basically has that reaction from the start so it's not conduction. Since heat is produced by friction in this situation it causes static to happen. so i think its friction

Answer:

The first option, aka Opick it up off the gound within 10 seconds, and it's o.k. to eat

Explanation:

The 10 second rule is a rule when you drop foods, but if you get it off the floor under 10 seconds, you can eat it.

Did you know that food picked up under 10 seconds and after 10 seconds has almost the same number of bacterias? The 10 second rule is basically worthless.

Magnesium chromate is a chemical compound, with the formula MgCrO4. It is a white or brownish, odorless, water-soluble solid with several important industrial uses.

Graphite is a fantastic lubricant and a powerful electrical conductor because of these unbound electrons.

Unbound can serve as a caching server, it can also perform recursion, store records obtained from other DNS servers, and provide an authoritative service, such as if you only have a few zones.

As a result, it can act as a "glue" server or host a small zone with only a few domains, making it ideal for a lab.

Why need to utilize Unbound DNS?

With its harden-glue, access control, maximum randomization for request ID and ports, response scrubbing, case preservation, plus Denial of Service or DoS prevention capabilities, Unbound is feature-rich with DNS Security. These are only a few.

Therefore, graphite is a fantastic lubricant and a powerful electrical conductor because of these unbound electrons.

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Answer: The correct option is A) They have fixed energy values.

Explanation:

Electron is one of the sub-atomic particle present around the nucleus of an atom which is negatively charged.

In an atomic model, it is assumed that the electron revolves around the nucleus in discrete orbits having fixed energy levels.

These electrons when jumping from one energy level to another, some amount of radiation is either emitted or absorbed.

These fixed energy levels are given by the Bohr model and thus, the electrons are quantized.

Hence, the correct option is A) They have fixed energy values.

Answer: They have fixed energy values

Explanation: a pex

Answer: 15910 meters

Explanation:

1 kilometer = 1000 meters

15.91 kilometers * 1000 meters/1 kilometer =

15.91 * 1000/1=

15.91*1000=15910 meters

An ion of Na+ (sodium) with a charge of +1 would most likely ionically bond with an atom of Cl- (chlorine) in a 1:1 ratio.  option(c)

Ionic bonding occurs between a metal and a nonmetal, where the metal loses electrons to form a positively charged ion (cation), and the nonmetal gains those electrons to form a negatively charged ion (anion).

Sodium, a metal, readily loses one electron to achieve a stable electron configuration similar to that of the noble gas neon. This results in the formation of Na+ ion with a +1 charge. Chlorine, a nonmetal, has seven valence electrons and requires one additional electron to attain the electron configuration of the noble gas argon. Therefore, chlorine readily accepts one electron, forming a Cl- ion with a -1 charge.

The 1:1 ratio of sodium to chlorine ions allows for the transfer of one electron from sodium to chlorine, resulting in the formation of the ionic compound sodium chloride (NaCl), commonly known as table salt. The electrostatic attraction between the oppositely charged ions holds the compound together in a crystal lattice structure. option(c)

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Answer:

x=7

Explanation:

3x-3=18

-3 moves over the 18 side and becomes +3.

18 + 3 =21

3x=21

now you need to divide 3 with 21 giving you 7

Answer:

The answer is seven bc X is seven.

In a dilute solution, the forward reaction (dissociation of acetic acid) predominates, and the concentration of hydrogen ions is much lower than in a solution of a strong acid like HCl.

The dissociation of HCl in water produces hydrogen ions (H+) and chloride ions (Cl-):

HCl → H+ + Cl-

Since HCl is a strong acid, it completely dissociates into ions in aqueous solution.

The dissociation of acetic acid (CH3COOH) in water produces hydrogen ions (H+) and acetate ions (CH3COO-):

CH3COOH + H2O ⇌ H3O+ + CH3COO-

In this case, acetic acid is a weak acid, which means it only partially dissociates into ions in aqueous solution. The reaction is reversible because acetate ions can also react with hydrogen ions to form acetic acid and water:

CH3COO- + H3O+ ⇌ CH3COOH + H2O

However, in a dilute solution, the forward reaction (dissociation of acetic acid) predominates, and the concentration of hydrogen ions is much lower than in a solution of a strong acid like HCl.

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Answer:

Explanation:

The equation for the reaction of lithium with water to produce lithium hydroxide and hydrogen gas is:

Li + H2O -> LiOH + H2

To balance this equation using the electron-transfer method, we first need to determine the oxidation states of each element in the reactants and products.

In Li, the oxidation state of lithium is +1. In H2O, the oxidation state of hydrogen is +1 and oxygen is -2.

In LiOH, the oxidation state of lithium is +1, oxygen is -2 and hydrogen is +1.

In H2, the oxidation state of hydrogen is +1.

It's clear that lithium loses 1 electron to become Li+ and hydrogen gains 1 electron to become H-.

So, we have to add an electron on the right side of the equation to balance the electrons.

Li + H2O -> LiOH + H2 + e-

Now, the number of electrons on both sides of the equation is the same and the equation is balanced.

Alternatively, we can use the oxidation number method, where we balance the charge of the reactant and product side of the equation. The sum of the oxidation numbers of all atoms on the reactant side must equal the sum of the oxidation numbers of all atoms on the products side. In this case, the oxidation state of lithium is +1, hydrogen is +1 and oxygen is -2.

Li + H2O -> LiOH + H2

+1 +1 -2 = +1 +1 +1 -2

The equation is already balanced with respect to oxidation numbers

Answer:

1039.482

Explanation:

Answer:

2

Explanation:

bc the 2 that's after a bracket refers to both oxygen and nitrogen, making oxygen 6 bc it already has a 3(3×2=6)

Answer:

2

Explanation:

Answer:

Yes

Explanation:

What cause an earthquake is when the earth plates shift and if theirs a drop in the tentonic plates a ripple effect like when you drop something in water will occur. The plates shift down the water in which the plate shift down the water will go in that direction due to gravity, but instead of equalizing the water will pick up some speed and velocity and begin to form a wave now. When an tsunami happens you know it coming cause the water moves back cause the water is picking up to much speed and due to cohesion its moves along with the move water and builds up. Creating a massive tidal wave known as tsunamis.

The water that hit the island is not the same water that was above the earthquake on the ocean floor. Waves transfer energy not matter.

In conclusion, waves transfer energy not matter.

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Answer:

Explanation:

Calcium and Beryllium are similar to Magnesium because all the three elements belong to the same group and have 2 valence electrons in their outer shell.

Potassium has 19 protons and - since the number of protons is the same as the number of electrons- also 19 electrons. To find out the number of neutrons you have to look at the atomic mass or weight of the element.

Answer:

AMBANTOT MO MALIGO KANA

The hydrolysis of the given acetal, H₂C(CH₃)(OCH₃)CH₃, in aqueous HCl results in the formation of two organic products: 2-methoxy-2-methylpropane and methanol.

The hydrolysis of an acetal involves the cleavage of the acetal bond and the formation of two separate organic compounds. In this case, the given acetal H₂C(CH₃)(OCH₃)CH₃ will undergo hydrolysis in aqueous HCl.

The hydrolysis of the acetal bond leads to the formation of 2-methoxy-2-methylpropane and methanol as the organic products. The structural formula for 2-methoxy-2-methylpropane can be represented as CH₃CH(OCH₃)CH₃, where the oxygen atom of the acetal is now bonded to the central carbon atom. The structural formula for methanol remains as CH₃OH.

To indicate stereochemistry, wedge/hash bond tools can be used. For example, if there is a chiral center in the acetal, the stereochemistry of the resulting products can be shown by using wedges and hashes to depict the spatial arrangement of the substituents around that chiral center.

In summary, the hydrolysis of the given acetal in aqueous HCl yields 2-methoxy-2-methylpropane and methanol as the organic products. The structural formulas for these compounds can be represented, considering the stereochemistry where applicable, using wedge/hash bond tools.

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Basalt is 65.5 million years ago to the present. Limestone with fossil was about 500 million years ago. Sandstone with trilobite is between 525 and 505 million years old.

A quantifiable measurement of how old something is or how long ago it occurred, expressed typically in terms of years, is called an absolute age in geology.

Radiometric techniques are used the most often in geology to determine absolute ages.

Basalt was formed 65.5 million years ago. Fossilized limestone dates back to roughly 500 million years. Trilobites are found in sandstone that is between 525 and 505 million years old.

In the Carboniferous epoch, about 340 million years ago, the earliest amniotes diverged from their amphibian predecessors. Soon after the first amniotes emerged, they split into two major lines.

Thus, these are the probable ages of the given rocks.

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Answer:

wat do we have to do here ????

Methane is synthesized commercially by the distillation of bituminous coal and by heating a mixture of carbon and hydrogen. It can be produced in the laboratory by heating sodium acetate with sodium hydroxide and by the reaction of aluminum carbide (Al4C3) with water.

Hope this helps

Have a great day

~Zero~

Answer:

Explanation:

E.92

Hay are you single how old are you want to be my gf

The things classified as energy can not be classified as matter based on the description of both.

From these definitions, it is clear that the things classified as energy can not also be classified as matter. Energy is just a property or a concept.

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Answer:

Both objects are in physical contact with each other

Explanation:

Conduction refers to the flow of heat from one object to another when the both objects are in contact with each other.

Hence, before heat can flow from one object to another, the two objects must be in contact with each other. This is a key requirement before conduction can take place.