The sodium-potassium pump forces sodium ions out of the cell and potassium ions ______. group of answer choices

Answer:

the formula is Cu(OH)2

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The value chain model classifies all company activities as either primary or support.

The given statement is true.

The value chain model refers to the sequence of activities necessary for a company to deliver a valuable product or service to its customers. It categorizes all of the company's activities into two categories: primary and support.Primary activities are those that are directly involved in creating a product or service, such as inbound logistics, operations, outbound logistics, marketing and sales, and service. Support activities are those that provide assistance to primary activities, such as procurement, technology development, human resource management, and infrastructure.

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Answer:

To solve this problem and calculate the grams of Ni, we need to use the molar mass of Ni₂0₃ and the stoichiometry of the reaction.

The balanced chemical equation for the reaction between Ni₂0₃ and H₂ is:

Ni₂0₃ + 2H₂ → 2Ni + 3H₂0

From this equation, we can see that 1 mole of Ni₂0₃ reacts to produce 2 moles of Ni. Therefore, we can use the following conversion factor:

1 mole Ni₂0₃ = 2 moles Ni

We can also use the molar mass of Ni₂0₃ to convert grams of Ni₂0₃ to moles of Ni₂0₃:

54.3 g Ni₂0₃ x (1 mole Ni₂0₃ / 165.38 g Ni₂0₃) = 0.3284 moles Ni₂0₃

Now, we can use the conversion factor to find moles of Ni:

0.3284 moles Ni₂0₃ x (2 moles Ni / 1 mole Ni₂0₃) = 0.6568 moles Ni

Finally, we can use the molar mass of Ni to convert moles of Ni to grams of Ni:

0.6568 moles Ni x (58.69 g Ni / 1 mole Ni) = 38.53 g Ni

Therefore, the grams of Ni in 54.3 g Ni₂0₃ is 38.53 g Ni.

Explanation:

Suppose a vessel contains HI at a concentration of 0.32 M. The concentration of HI in the vessel 0.88 seconds later is 0.175 M.

Initial concentration of HI = 0.32 M

Time = 0.88 s

Rate is given as 0.684 s⁻¹

The concentration of HI in the vessel 0.88 seconds later. It can be expressed as :

ln (HI) = ln (HI)₀ - (kt)

Where;

(HI)₀ is the initial concentration

k is the reaction rate constant

t is time

Now, we have;

ln (HI) = In (0.32) - (0.684 × 0.88)

ln (HI) = -1.1394 - 0.6019

ln (HI) = -1.7413

(HI) = e^(-1.7413)

(HI) = 0.175 M

Thus, the concentration of HI is 0.175 M.

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This question is incomplete the complete question is :

Consider this reaction: 2 HI(g) ⇄ H₂(g) + I₂(g)

At a certain temperature, this reaction follows first - order kinetics with a rate constant of 0.684 s^(-1). Suppose a vessel contains HI at a concentration of 0.32 M. Calculate the concentration of HI in the vessel 0.88 seconds later. you may assume no other reaction is important. round your answer to significant digits.

Answer:

the solution is acidic as its ph has already exceeded the neutral level

\(1.1 X 10^-9 M\) is the [H] in a solution with a pH of 9.92.

pH is the quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

The pH of a solution is usually found by the following expression:

pH=-log [\(H^+\)]

Therefore, to find the concentration of \(H^+\) we can rearrange this expression and thus,

= [\(H^+\)] = \(10^-^{pH}\)

= [\(H^+\)] = \(10^-^{9.92}\)

=\(1.1 X 10^-9 M\)

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Answer:

Even though the two substances possess many similarities, they have some unique properties. In turn, since they have the same properties, if they were the same substance, it would make matters worse, if the same chemical was in two different places, there would not be a difference between them since they are the same, just as it is with are two different chemicals would have differing properties since they are two properties would vary from one another since they are 2 totally different things!

The type of energy is given as under :

The sun transfers energy to the earth in the form of electromagnetic waves and the warm up the earth's upper air.

Some of the radiation that enters the earth get absorbed by the land surface. The sun is ths responcible for the energy distribution.

The visible light is part of wavelength that carries colors the human eyes can see. The infrared is the range that transfers the heat from the sun.

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The correct isomer of C4H10O based on its 13C NMR spectrum is option B. In the given 13C NMR spectrum, we have four distinct peaks at δ 18.9, δ 30.8, and δ 69.4.

From the spectrum, we can identify the number of carbons corresponding to each peak:  The peak at δ 18.9 represents two carbon atoms, which indicates the presence of a CH3 group.

The peak at δ 30.8 represents one carbon atom, indicating the presence of a CH group, the peak at δ 69.4 represents one carbon atom, indicating the presence of a CH2 group. Based on these observations, the only isomer that matches this spectrum is option B.

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The given reaction represents a nuclear process known as beta emission (Option E).

In this reaction, 214 82 Pb (lead-214) decays into 214 83 Bi (bismuth-214) while emitting a 0 -1e (beta particle, or electron). Beta emission occurs when a neutron within an unstable nucleus is converted into a proton, resulting in an electron being emitted.

This transformation increases the atomic number (Z) by 1 while keeping the mass number (A) constant. Beta emission helps the nucleus achieve a more stable state by altering the ratio of protons to neutrons. In the provided reaction, lead-214 transforms into bismuth-214, with the atomic number increasing from 82 to 83. This demonstrates that a neutron has been converted into a proton, and an electron (beta particle) has been emitted in the process. Therefore, the correct answer is e. beta emission.

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Compound B is expected to be converted into an epoxide more rapidly upon treatment with NaOH because the nucleophile and leaving group are both in the more stable equatorial position.

In order to form an epoxide, a nucleophile must attack the carbocation intermediate from the backside, which requires both an axial nucleophile and an axial leaving group. In this case, neither compound has both groups axial, so the reaction will be slower.

However, compound B has both the nucleophile and the leaving group in the more stable equatorial position, which will make the reaction faster than with compound A. The hydrogen bonding between the axial alcohol and the tert-butyl group in compound A will not significantly affect the reaction rate.

Additionally, while an equatorial leaving group may leave more readily to form a carbocation, it is not as important in this particular reaction as the requirement for backside attack. Therefore, the correct answer is that compound B reacts more rapidly because the nucleophile and leaving group are both in the more stable equatorial position.

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Answer:

449 (g K) / 39.1 (g/mol K) = 11.5 mol K

Explanation:

Potassium has atomic number 39.1

amount of K in 449g sample = 449/39.1 = 11.5 mol

Answer:

\(\boxed {\boxed {\sf 11.5 \ mol \ K}}\)

Explanation:

We are asked to find how many moles of potassium are in 449 grams of potassium.

We will convert grams to moles using the molar mass. This is the mass of 1 mole of a substance. These values are found on the Periodic Table because they are the same as the atomic masses, but the units are grams per mole (g/mol) instead of atomic mass units (amu).

Look up potassium's molar mass.

We will convert using dimensional analysis, so we set up a ratio using the molar mass.

\(\frac { 39.0983 \ g \ K }{ 1 \ mol \ K}\)

We are converting 449 grams of potassium to moles, so we multiply by this value.

\(449 \ g \ K *\frac { 39.0983 \ g \ K }{ 1 \ mol \ K}\)

Flip the ratio. It is still the same value, but the units of grams of potassium cancel.

\(449 \ g \ K *\frac {1 \ mol \ K}{ 39.0983 \ g \ K }\)

\(449 *\frac {1 \ mol \ K}{ 39.0983}\)

\(\frac {449}{ 39.0983} \ mol \ K\)

\(11.48387526 \ mol \ K\)

The original measurement of grams (449) has 3 significant figures, so our answer must have the same. For the number we found, that is the tenths place. The 8 in the hundredth place tells us to round the 4 in the tenths place up to a 5.

\(11.5 \ mol \ K\)

449 grams of potassium contains approximately 11.5 moles of potassium

Answer:

c. lakes freeze from the botton up

Answer:

First, the simple part: light exhibits dual nature. It exists as both particles and wave. So light can be considered as “particles” but not molecules.

Answer: Yes, sulfuric acid is highly soluble in water.

Explanation:

Answer:

its a

Explanation:

Answer:

c

Explanation:

Mass of H2O = number of moles of H2O × molar mass of H2O By substituting the calculated values, we can determine the mass of HCN and H2O produced.

To determine the mass of hydrogen cyanide (HCN) and water (H2O) produced from the given reaction of gaseous ammonia (NH3), oxygen (O2), and methane (CH4), we need to consider the stoichiometry of the reaction.

The balanced chemical equation for the reaction is as follows:

2 NH3 + 3 O2 + 2 CH4 → 2 HCN + 6 H2O

From the balanced equation, we can see that 2 moles of ammonia (NH3) react with 3 moles of oxygen (O2) and 2 moles of methane (CH4) to produce 2 moles of hydrogen cyanide (HCN) and 6 moles of water (H2O).

To calculate the mass of HCN and H2O produced, we need to convert the given masses of NH3, O2, and CH4 to moles using their respective molar masses:

Molar mass of NH3 = 17.03 g/mol

Molar mass of O2 = 32.00 g/mol

Molar mass of CH4 = 16.04 g/mol

Number of moles of NH3 = mass of NH3 / molar mass of NH3

Number of moles of O2 = mass of O2 / molar mass of O2

Number of moles of CH4 = mass of CH4 / molar mass of CH4

Once we have the number of moles of each reactant, we can use the stoichiometric coefficients from the balanced equation to determine the number of moles of HCN and H2O produced.

Number of moles of HCN = 2 × min(number of moles of NH3, number of moles of O2, number of moles of CH4)

Number of moles of H2O = 6 × min(number of moles of NH3, number of moles of O2, number of moles of CH4)

Finally, we calculate the mass of HCN and H2O produced using their respective molar masses:

Mass of HCN = number of moles of HCN × molar mass of HCN

Mass of H2O = number of moles of H2O × molar mass of H2O

By substituting the calculated values, we can determine the mass of HCN and H2O produced.

It is worth noting that the 100% yield assumption is ideal, but in reality, reactions may have lower yields due to various factors such as side reactions or incomplete conversions.

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Answer:

minimizing the use of cars can help save the ozone layer by ​Minimizing the amount of gasoline which damages the ozone layer.

therefore the ozone layer is preserved.

have a nice day.

Answer:

5.5 × 10²² formula units Al₂O₃

General Formulas and Concepts:

Chemistry - Stoichiometry

Explanation:

Step 1: Define

9.3 g Al₂O₃

Step 2: Define conversions

Avogadro's Number

Molar Mass of Al - 26.98 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Al₂O₃ - 2(26.98) + 3(16.00) = 101.96 g/mol

Step 3: Convert

\(9.3 \ g \ Al_2O_3(\frac{1 \ mol \ Al_2O_3}{101.96 \ g \ Al_2O_3} )(\frac{6.022 \cdot 10^{23} \ formula \ units \ Al_2O_3}{1 \ mol \ Al_2O_3} )\) = 5.4928 × 10²² formula units Al₂O₃

Step 4: Check

We are given 2 sig figs. Follow sig fig rules.

5.4928 × 10²² formula units Al₂O₃ ≈ 5.5 × 10²² formula units Al₂O₃

The volume in liters of a 0.35m aluminum sulfate solution that contains of aluminum sulfate is 119.75 liters.

What is aluminum sulfate?
Aluminum sulfate is an inorganic compound with the molecular formula Al2(SO4)3. It is a white crystalline solid that is soluble in water, and it is most commonly used as a coagulating agent in water treatment and paper production. It is also used as an additive in various food products, in leather tanning, and as a pesticide.

The volume of a 0.35m aluminum sulfate solution is calculated using the molarity equation: V = (M x n) / c

where V is the volume, M is the molarity, n is the amount of solute (in moles) and c is the concentration (in moles/liter).

In this case, we are given the molarity of 0.35m and the concentration of aluminum sulfate (Al2(SO4)3).

To do this, we can use the molar mass of Al2(SO4)3, which is 342.14 g/mol.

Therefore, the amount of aluminum sulfate in moles is:

n = 0.35 x 342.14 = 119.75 mol

Now that we know the amount of aluminum sulfate in moles, we can calculate the volume of the solution. The equation is:

V = (M x n) / c

V = (0.35 x 119.75) / 0.35 = 119.75 liters

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The number of grams in 1.8 x 10²⁴ molecules of methane in a sample is 47.84g.

The number of grams in a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:

mass = no of moles × molar mass

According to this question, there are 1.8 x 10²⁴ molecules of methane in a sample. The number of moles in this substance must first be calculated as follows:

no of moles = 1.8 × 10²⁴ ÷ 6.02 × 10²³

no of moles = 0.299 × 10¹ = 2.99 moles

mass of methane = 2.99 × 16 = 47.84g

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Answer:

It is B. Budding

Explanation:

Hope this helped have an amazing day!

Answer:

1a) .68 moles 1b)4.1E-23 molecules.

2a) .37 moles 2b) 2.27E-23 molecules

Explanation:

1a) CO2 is equal to 44 grams (C→12 grams,O→16 grams[·2]) .30g/44g is .68 moles.

1b) multiply 1A by advogadros number (6.022E-23)

2a) NaCl is 58 grams. 22/58 is .37 moles.

2b) multiply 2A by advogadros number.

you'd answer #3 the same way #1 and #2

The branch of science that deals with chemicals and bonds are called chemistry. The moles are units to calculate the quantity required to use the element.

The correct answer is mentioned below.

According to the question, the moles to the option is as follows:-

\(n =\frac{M}{M.M}\\ \\\frac{30}{44} \\\\=0.681\\\\\)

The number of molecules is \(0.68 *6022*10^{23} =4.09496*10^{23\).

2. moles of 22 grams of NaCl is

\(\frac{22}{44}\\ \\=0.5\\\\\)

Molecules will be \(0.5*6.022*10^{23} = 3.011*10^{23}\)

3. moles of 50-gram ammonia

\(\frac{50}{17} \\\\2.94\\\)

The number of molecules is \(2.94*6.022*10^{23} = 1770*10^{23\)

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No, noninvasive can not be used to study the responses of single neuron.

It is not possible to study the responses of a single neuron non-invasively using current technology. The information related to the activity of a single neuron can be studied using invasive methods such as microelectrode recordings from a single neuron. It is crucial to be cautious while performing such methods as it might damage the brain tissue.

Some non-invasive techniques like fMRI, EEG, and MEG can only record neural activity from many neurons together. EEG, fMRI, and MEG provide information on the activity of groups of neurons, but they cannot provide information on single neuron activity. Hence, invasive techniques are preferred as they can provide detailed information about the activity of individual neurons.

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Answer:

13.749 x 10 -3 g

Explanation:

take the number of atoms that you have divided by Avogadro's number and then multiply by the molar mass of the element. :)

The molarity of NaClO in the bleach is 0.101 M (mol/L).

Molarity (M) is the number of moles of solute per liter of solution.

It is calculated by dividing the number of moles of solute by the volume of the solution in liters.

To find the molarity of NaClO in the bleach, we need to use the following information given in the question:

1L of bleach has a mass of 1,100 grams7.25% of the mass of bleach is NaClO1 mol of NaClO has a mass of 74.44 gramsTo begin the calculation, we need to determine the mass of NaClO in 1L of bleach.

To do this, we can use the fact that 7.25% of the mass of bleach is NaClO:Mass of NaClO in 1L of bleach = 0.0725 x 1,100 g = 79.75 g

Next, we can convert this mass of NaClO to moles using its molar mass:

moles of NaClO = 79.75 g / 74.44 g/mol = 1.07 mol.

Finally, we can use the formula for molarity to calculate the molarity of NaClO in the bleach:

Molarity = moles of solute / volume of solution in litersMolarity = 1.07 mol / 10 L = 0.107 M (mol/L)We can round this answer to three significant figures to get the final answer of 0.101 M (mol/L).

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Answer:

Teens use more phone data then adults because of apps, photos and other things. There is not a certain number for how much data teens use but research says teens use up more than a half of a phone storage. Teens spend from 3-4 hours on phone because of limits but they could spend a whole day.

Explanation:

Answer:

the density of the cube is 0.8 grams per cubic centimeter.

Explanation:

To find the density of the cube, we need to know its volume as well as its mass. From problem #3, we know that the length of each side of the cube is 5 cm. Therefore, the volume of the cube is:

Volume = (side length)^3

Volume = 5^3 cm^3

Volume = 125 cm^3

Now that we know the volume of the cube, we can use the formula for density:

Density = Mass / Volume

We are given that the mass of the cube is 100 g. Substituting the values we get:

Density = 100 g / 125 cm^3

Simplifying, we get:

Density = 0.8 g/cm^3

Therefore, the density of the cube is 0.8 grams per cubic centimeter.

To react completely with 7.0 moles of oxygen gas, 14.0 moles of carbon monoxide are needed.

The balanced chemical equation for the formation of carbon (CO2) from carbon monoxide (CO) and oxygen (O2) is:

2CO + O2 → 2CO2

From the equation, we can see that it takes 2 moles of CO to react with 1 mole of O2 to produce 2 moles of CO2.

Given that we have 7.0 moles of O2, we can determine the amount of CO required by using the stoichiometric ratio:

(2 moles CO / 1 mole O2) × 7.0 moles O2 = 14.0 moles CO

Therefore, 14.0 moles of carbon monoxide are needed to react completely with 7.0 moles of oxygen gas.

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(a) Within a reversible reaction, forward and reverse chemical reactions progress at the same pace while concentrations of products and reactants remain constant with time.

(b) Le Chatelier's principle states that an increase in pressure advantages a side containing fewer moles of gas. For instance, in the formation of methanol from CO and H2, one molecule of gas is formed while two molecules come from the elements themselves.

(c) Sustaining a pressure above 5 MPa would be costly as high-tensile materials, equipment and additional energy are needed to compress the gases at those pressures.

(d) Rising temperature allows for an equilibrium towards the endothermic direction, where heat consumption occurs. Here, since the exothermic reaction itself releases heat; it will result in a shift towards the reactant side, causing a fall in the yield rate of methanol produced.

(e) If a catalyst does not exist, reaction rates would slow down considerably, requiring higher temperatures to prompt reasonable reaction progression. This is because catalysts lower activation energy, enabling the reaction to be done at lesser temperatures.

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The train cars moves in the same direction when the engine car begins

moving to the left.

The law of magnetism states that like poles repel and unlike poles attract.

In substances which have magnetic field, they are known to attract each

other.

The engine and train car are highly magnetized which results in them

moving in the same direction when they are in close contact with one

another.

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