How many kilograms of oseltamivir would be needed to treat all the people in a city with a population of 400000 people if each person consumes two oseltamivir capsules a day for 5 days? Express your answer to one significant figures and include the appropriate units.

Answer:

Its answer is cu++ and O-.

The description that best fits the acid-base disorder respiratory acidosis is consequence of reduced alveolar ventilation; for example, due to COPD. The correct answer is C).

This is because respiratory acidosis occurs when there is an increase in carbon dioxide levels due to decreased alveolar ventilation, which can be caused by conditions such as COPD. Option A describes metabolic acidosis, option B describes respiratory alkalosis, and option D describes metabolic alkalosis.

Respiratory acidosis is a condition that occurs when the lungs cannot remove enough carbon dioxide from the body, leading to an increase in carbonic acid and a decrease in pH. This is often due to reduced alveolar ventilation, which can be caused by conditions such as COPD, asthma, pneumonia, or even drug overdose.

In COPD, the airways become narrowed, making it difficult to breathe and causing a decrease in the amount of air that reaches the alveoli (the tiny air sacs in the lungs). This leads to an accumulation of carbon dioxide in the body, resulting in respiratory acidosis.

Symptoms of respiratory acidosis can include shortness of breath, confusion, fatigue, and headache. Treatment typically involves addressing the underlying cause, such as using bronchodilators or oxygen therapy in the case of COPD.

In summary, respiratory acidosis is a consequence of reduced alveolar ventilation, which can be caused by a range of respiratory conditions, including COPD. Understanding respiratory acidosis's underlying causes and symptoms is important for proper diagnosis and treatment.

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According to the electronic configuration, Be²\(^+\) is an ion which is a cation with + 2 charge.

An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.

Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.

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Answer:The explanation is true

Directly proportional is like temperature and volume

V=kT  as Temp increases, volume increases

Inversely proportional is like pressure and volume

VP=k  as P increases, V decreases.

since wavelength time frequency is the speed of light,

wavelength and frequency are inversely proportional

lf=c

Explanation:

In electromagnetic waves, the frequency and wavelength are inversely proportional, which means if one gets larger, the other must get smaller. ...

Sample left = 6.25 g

The percentage = 6.25%

Given

t1/2 = half-life = 3.8 days

t = decay time = 15.2 days

No = initial sample = 100 g

Required

Nt = final sample left

The percentage

Solution

General formulas used in decay:  

\(\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}\)

Input the value :

\(\tt N_t=100.\dfrac{1}{2}^{15.2/3.8}\\\\N_t=100.\dfrac{1}{2}^4\\\\N_t=6.25~g\)

The percentage : Nt/No

6.25 : 100 = 6.25%

Answer:

light

Explanation:

I'm not sure to my answer but hope it helps if it is correct:)

Answer:

it will become heterogenous and as well asit will dissociate into ions

also it will form base and evolve h2gas

Answer:

the mixture becomes more concentrated

Explanation:

this is due to more solute ions of potassium sulphate than solvent ions of water

There is a significant quantity of energy released during the hydrolysis of the covalent bonds in ATP.

Phosphate-phosphate bond hydrolysis occurs during the breakdown of an ATP molecule, which releases a significant amount of energy.

How is ATP hydrolysis defined?

Adenosine triphosphate (ATP) contains highly energetic phosphoanhydride bonds that, when broken, such as occurs in muscles, release chemical energy through a catabolic reaction process called ATP hydrolysis.Nitrogen-carbon double bonds, phosphate-phosphate bonds, carbon-hydrogen bonds, and hydrogen bonds are all found in an ATP molecule.

Phosphate-phosphate bond hydrolysis occurs during the breakdown of an ATP molecule, which releases a significant amount of energy.

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Answer:

30

Explanation:

I’m pretty sure it is

It is important to mark the solvent level on the chromatography paper as soon as you remove it from the petri dish in a chromatography of food dyes lab because if the solvent level is not marked as soon as possible, the solvent front can evaporate causing the results to be inaccurate.

Chromatography is a laboratory technique for separating a mixture into its individual components. The mixture is dissolved in a solvent and then placed in contact with a stationary phase. The components of the mixture are then separated based on their individual interactions with the stationary phase and the solvent. Chromatography of food dyes is a lab that is used to separate different food dyes that are present in a sample.

The sample is placed on chromatography paper which is then placed in a petri dish containing a solvent. As the solvent moves up the chromatography paper, the different dyes in the sample are separated based on their individual interactions with the paper and the solvent.

In a chromatography of food dyes lab, it is important to mark the solvent level on the chromatography paper as soon as it is removed from the petri dish because the solvent front can evaporate causing the results to be inaccurate. If the solvent front evaporates, the distance traveled by the different dyes will be shorter, making it appear as though they are less separated than they actually are.

By marking the solvent level as soon as possible, the distance traveled by the different dyes can be accurately measured, and the results will be more accurate.

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The reason why it is important to mark the solvent level on the chromatography paper as soon as you remove it from the petri dish is that the solvent level must be measured to calculate the Rf value. The Rf value is a way to quantify how far a particular compound travels in chromatography.

It is calculated as the distance traveled by the compound divided by the distance traveled by the solvent.The chromatography of food dyes lab is a experiment that aims to identify the dyes used in food products by using paper chromatography. The procedure includes: Cut a strip of chromatography paper and mark the solvent level using a pencil as soon as you remove it from the petri dish; prepare the chromatography solvent by mixing rubbing alcohol with water; then, spot the dyes on the chromatography paper using toothpicks or capillary tubes.

Afterwards, place the paper in the petri dish containing the solvent, making sure that the dyes do not touch the solvent, and cover it. Allow the solvent to travel up the paper until it reaches the solvent level mark. Once the solvent level has reached the mark, remove the paper from the petri dish and allow it to dry before analyzing the results.

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25 ml of the round bottom flask is better

M.W. of cyclohexanol is 100.158 g/mol

density = 0.962 g/cm3

5.2 ml of cyclohexanol = 5.2×0.962/100.158 = 0.05 mole

0.05 mole × 100.158 = 5.008 g

in solvent-free reaction 25 ml is easy to distill

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Answer:

Explanation: possible oxidation numbers of Au are +I and +III

Au2O3 ⇒ 2 Au + 3 O2

Explanation:

Plastic takes time to degrade which means it has great longevity. Plastic does not break as easily as glass or other materials. It lasts long and offers great service. Plastic storage containers offer greater flexibility than any other packaging materials.

Answer:

b a c a b

Explanation:

Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.24moles of propane gas would be present in 11 grams of the gas at standard conditions.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

mole of substance =given mass of substance ÷ molar mass of substance

Molar mass of 1 mole of propane gas= 44.0956 g/mol

Given mass of propane gas=11 grams

Substituting all the given values in the above equation, we get

mole of substance =11 grams ÷44.0956 g/mol

mole of substance =0.24moles

Therefore, 0.24moles of propane gas would be present in 11 grams

of the gas at standard conditions.

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1.6 moles of reactant will be in excess .

What is reactant?
A reagent, also known as an analytical reagent, is a substance as well as compound that is added to a system in order to trigger a chemical reaction or determine whether one has already occurred. Although the words "reagent" and "reactant" are frequently used interchangeably, "reactant" refers to a substance that is consumed during a chemical reaction. Even though they are part of the reaction's mechanism, solvents aren't typically referred to as reactants. Catalysts aren't reactants either because they aren't used up in the reaction. Reactants are frequently referred to as substrates in biochemistry, particularly in relation to enzyme-catalyzed reactions.

By using stoichiometric ratio
5 moles of o2 required to react with 4 moles of nh3
1 moles of o2 required = 4/5 moles of nh3

Here,
When we have 3 moles of o2
then 3 moles of o2 required =  4/5 x 3
                                              = 12/5 moles
                                              = 2.4 moles
then excess of moles of nh3 will be 4 - 2.4 = 1.6.

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The concentration of Ca(OH)2 in the solution is approximately 1.33 x 10^(-6) M.

To find the concentration of Ca(OH)2 in a solution with a pH of 8.57, we need to use the concept of pOH, which is the negative logarithm of the hydroxide ion concentration ([OH-]). The pOH can be calculated by subtracting the pH from 14, which gives us 14 - 8.57 = 5.43.

Since Ca(OH)2 produces two OH- ions for every molecule of Ca(OH)2 that dissolves, the concentration of OH- ions will be twice the concentration of Ca(OH)2. Thus, we have [OH-] = 2x, where x represents the concentration of Ca(OH)2.

Taking the antilogarithm of the pOH, we find that [OH-] = 10^(-pOH) = 10^(-5.43).

Since [OH-] = 2x, we can write 2x = 10^(-5.43) and solve for x.

x = (10^(-5.43))/2 ≈ 1.33 x 10^(-6) M

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The spectrum from an incandescent light bulb with a filament is a continuous spectrum. This means that the light emitted contains all colors of the visible spectrum, appearing as a smooth, uninterrupted rainbow

Electrons in an atom can only gain energy by leaving the atom and creating an ion. They can move between discrete energy levels or escape the atom if given enough energy. Electrons can have any energy below the ionization energy within the atom or escape if given enough energy.

However, electrons can have any energy within the atom and cannot be given enough energy to cause them to escape the atom. They move between discrete energy levels within the atom and cannot accept an amount of energy that causes them to escape the atom.

In contrast, an emission line spectrum appears as a series of bright lines against a dark background, while an absorption line spectrum appears as a series of dark lines against a bright background.

The type of spectrum emitted depends on the source of the light and the composition of the material emitting the light.

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Answer:

Chlorine (Cl)

Explanation:

Although F is more electronegative than Cl, Cl has higher electron affinity than F. This is due to small size of fluorine. As a result of its very small size, the inter-electronic repulsion is relatively compact in 2p sub-shell of chlorine atom.

Answer:

HCl

Explanation:

7.65 moles of gas at STP would occupy a volume of approximately 171.36 liters.

To find out how many liters are in 7.65 moles of a gas, you will need to use the Ideal Gas Law equation, which is:

PV = nRT

In this equation:
P = pressure of the gas
V = volume of the gas in liters
n = number of moles of the gas
R = ideal gas constant (0.0821 L atm/mol K)
T = temperature in Kelvin

However, since we are not given the values for pressure (P) and temperature (T), we cannot calculate the exact volume (V) in liters for 7.65 moles of a gas.

If we assume standard temperature and pressure (STP) conditions, which are 0°C (273.15 K) and 1 atm, we can use the molar volume of a gas at STP, which is 22.4 liters/mol.

To calculate the volume in liters at STP, you can use the following formula:

V = n × molar volume at STP

Now, plug in the values:

V = 7.65 moles × 22.4 liters/mol

V ≈ 171.36 liters

So, under STP conditions, 7.65 moles of gas would be approximately 171.36 liters.

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One mole of carbon gives one mole or 44 g of carbon dioxide gas. Then 5.4 moles can give 5.4 moles or 237.6 g of the carbon dioxide gas.

A synthesis reaction is a type of reaction in which two reactants combines to form a new single product.  Synthesis reaction can be of endothermic or exothermic.

Here, the synthesis reaction of carbon and oxygen giving carbon dioxide is given. As per the balanced chemical equation of the reaction, one mole of C gives one mole of carbon dioxide.

molar mass of carbon dioxide = 44 g/mol

Then, 5.4 moles of carbon can give equal number of moles that is, 5.4 moles of CO₂.

mass of 5 moles of CO₂ = 5.4 × 44 g/mol = 237.6 g.

Therefore, 237.6 g of CO₂ is produced by 5.4 moles of C in this synthesis reaction.

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Answer:

Lose energy

Explanation:

The molecules are moving from a liquid (molecules slide past one another) to a solid (molecules barely move) so are losing energy

Answer:

NaCl (Na is a metal and Cl is a nonmetal) MgO (Mg is a metal and O is a nonmetal) Al2O3, NaF, Na2O

Explanation:

You have to have a metal and a non metal together for it to be ionic

Explanation:

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The energy of one mole of CO₂ increased when it absorbs infrared radiation with a wavenumber of 2400 cm⁻¹ is 2.869 × 10³ J/mol.

The energy of one mole of CO₂ increased when it absorbs infrared radiation with a wavenumber of 2400 cm-1 can be calculated using the equation E = hcν.

Where,
E = energy
h = Planck's constant (6.626 × 10⁻³⁴ J s)
c = speed of light (2.998 × 10⁸ m/s)
ν = wavenumber (2400 cm⁻¹ or 2.4 × 10⁴ m⁻¹)

Plugging in the values, we get:
E = (6.626 × 10⁻³⁴ J s) × (2.998 × 10⁸ m/s) × (2.4 × 10⁴ m⁻¹)
E = 4.763 × 10⁻²¹ J

Since the question asks for the energy of one mole of CO2, we need to multiply the energy of one molecule by Avogadro's number (6.022 × 10²³ mol⁻¹):
E = (4.763 × 10⁻²¹ J) × (6.022 × 10²³ mol⁻¹)
E = 2.869 × 10³ J/mol

Therefore, the energy of one mole of CO₂ is 2.869 × 10³ J/mol.

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The catalyst is recovered unchanged in amount and chemical composition at the end of a reaction. It speeds up only a spontaneous reaction, not a spontaneous one. It is not consumed in a reaction. The correct option is B.

A substance which increases the rate of a reaction without itself undergoing any permanent change chemically or quantitatively is defined as the catalyst and the phenomenon is known as the catalysis. It is believed that a catalyst actually participates in the chemical reaction that it speeds up.

A catalyst does not affect the position of equilibrium of a reversible reaction and thus do not alter its equilibrium constant. This is because it speeds up the forward and backward reactions to the same extent. It shows some specificity in its action.

It does not alter the Gibbs energy.

Thus the correct option is B.

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