Samantha was not feeling well. She had a fever and felt nauseous. Her mother took Samantha to the doctor who prescribed an antibiotic. What kind of infectious agent did Samantha have?
Group of answer choices

A)Parasitic

B)Fungal

C)Viral

D)Bacterial

Answer:

metamorphic rock from heat and pressure

Answer:

8

Explanation:

The current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

To calculate the current in amperes, we need to use Faraday's laws of electrolysis and the stoichiometry of the reaction.

Faraday's laws state that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the cell. The relationship is given by:

Q = nF

Where Q is the electric charge in coulombs (C), n is the number of moles of substance involved in the reaction, and F is Faraday's constant, which is equal to 96,485 C/mol.

In this case, the substance being produced is Cl2, and we know the mass of Cl2 produced, which is 4.8 x 10^5 g.

First, we need to calculate the number of moles of Cl2 produced:

Molar mass of Cl2 = 35.45 g/mol

Moles of Cl2 = mass / molar mass = (4.8 x 10^5 g) / (35.45 g/mol) ≈ 1.354 x 10^4 mol

Now we can calculate the quantity of electricity passed through the cell using Faraday's laws:

Q = nF

Q = (\(1.354 x 10^4\)mol) * (96,485 C/mol)

Q ≈ 1.308 x 10^9 C

The quantity of electricity is given in coulombs. To find the current, we need to divide this value by the time in seconds.

Given that the time is 18 hours, we convert it to seconds:

Time = 18 hours * 60 minutes/hour * 60 seconds/minute

Time = 6.48 x 10^4 seconds

Finally, we can calculate the current:

Current (I) = Q / Time

I = (1.308 x 10^9 C) / (6.48 x 10^4 s)

I ≈ 2.02 x 10^4 Amperes

Therefore, the current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

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The concentration of Oxalic Acid is 0.2625 M.

A kinetic experiment is conducted to determine the rate law of a reaction. The concentration of Oxalic Acid can be calculated using the given amount of the reactants and the volume of the test tube. A balanced chemical equation can be used to find the stoichiometric ratio of the reactants in the given reaction.The balanced chemical equation for the reaction is:5 H2C2O4 + 2 KMnO4 + 3 H2SO4 → 10 CO2 + 2 MnSO4 + 8 H2OThe stoichiometric ratio between Oxalic Acid and Potassium Permanganate is 5:2. The Oxalic Acid is the limiting reactant, and Potassium Permanganate is in excess.The amount of Oxalic Acid in the solution can be calculated using the formula:molarity = moles of solute / volume of solution in L.The moles of Oxalic Acid can be calculated using the formula:moles of H2C2O4 = Molarity of H2C2O4 x Volume of H2C2O4 in L= 0.525 M x 0.006 L= 0.00315 moles.

The volume of the solution after the addition of the reactants is:6.00 mL of 0.525 M Oxalic Acid + 4.00 mL of distilled water + 2.00 mL of 0.200 M KMnO4= 12.00 mLThe concentration of Oxalic Acid in the solution can be calculated using the formula:Molarity of H2C2O4 = moles of H2C2O4 / volume of solution in L= 0.00315 moles / 0.012 L= 0.2625 M.

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Answer:

Scientific questions must be testable

Explanation:

If the Sun's surface became much hotter (while the Sun's size remained the same), the Sun would emit more ultraviolet light but less visible light than it currently emits. The statement is True.

Solar radiation is radiant (electromagnetic) energy from the sun. It provides light and heat for the Earth and energy for photosynthesis. This radiant energy is necessary for the metabolism of the environment and its inhabitants 1. The three relevant bands, or ranges, along the solar radiation spectrum are ultraviolet, visible (PAR), and infrared.

Ultraviolet radiation makes up just over 8% of the total solar radiation.

When heat increases, so does the frequency and energy of the wavelengths. Because of this, some visible light would be converted to ultraviolet light.

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By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.

Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.

STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).

First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we have STP conditions, we can substitute the values:

(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).

Simplifying the equation:

2.5 = n × 22.4149.

Solving for n (the number of moles):

n = 2.5 / 22.4149 ≈ 0.1116 moles.

Next, we can calculate the number of molecules using Avogadro's number:

Number of molecules = n × N_A.

Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).

Number of molecules ≈ 6.72 × 10^22 molecules.

Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

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Answer: The final pressure is 0.81 kPa

Explanation:

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 0.58 kPa

\(P_2\) = final pressure of gas = ?

\(V_1\) = initial volume of gas = v

\(V_2\) = final volume of gas = \(v-\frac{40}{100}\times v=0.6v\)

\(T_1\) = initial temperature of gas = \(25^0C=(25+273)K=298K\)

\(T_2\) = final temperature of gas = \(-22^0C=(-22+273)K=251K\)

Now put all the given values in the above equation, we get:

\(\frac{0.58\times v}{298}=\frac{P_2\times 0.6v}{251}\)

\(P_2=0.81kPa\)

The final pressure is 0.81 kPa

The volume in millilitres of 2.37M potassium hydroxide that contains 9.29g of solute is 70mL.

Volume of a solution can be calculated from the molarity, which is the concentration of a substance in solution, expressed as the number moles of solute per litre of solution.

Molarity = no of moles ÷ volume

no of moles = mass ÷ molar mass

Molar mass of pottasium hydroxide (KOH) = 56.1056 g/mol

moles = 9.29g ÷ 56.1056 g/mol = 0.166moles

2.37 = 0.166/V

V = 0.166 ÷ 2.37

V = 0.07L

Volume in millilitres = 70mL

Therefore, 70mL is the volume of the pottasium hydroxide solution.

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Answer:

It's actually D. 86.4%

Explanation:

When you combine coal, other gases, petroleum, nuclear, and natural gas, you get 86.4, which is the correct answer.

Answer:

D got it right

Explanation:

Answer:

The answer is d

Explanation:

God bless you have a great day

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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Step 1

Data provided:

Concentration of the solution = 4 M (or 4 mol/L)

Volume of the solution = 4 L

----------------------------

Step 2

Molarity = moles of solute/volume of the solution (L) (1)

Molarity = mol/L or M

--------------------------

Step 3

The moles of solute must be cleared from (1):

Moles of solute = molarity x volume of the solution

Moles = 4 mol/L x 4 L = 16 moles

Answer: moles of solute = 16 moles

Answer:

Four substitution products are obtained. The carbocation that forms can react with either nucleophile (H2O or CH3OH) from either the top or bottom side of the molecule

Explanation:

An SN1 reaction usually involves the formation of a carbocation in the slow rate determining step. This carbocation is now attacked by a nucleophile in a subsequent fast step to give the desired product.

However, the product is obtained as a racemic mixture because the nucleophile may attack from the top or bottom of the carbocation hence both attacks are equally probable.

The attacking nucleophile in this case may be water or CH3OH

Answer:

In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Explanation:

That is what I think on the subject

A law is more specific, such as this particular description of matter, whereas a theory can be more general and often includes more of a why. Atomic Theory explains why the law of conservation of matter exists; in chemical reactions, atoms simply rearrange and have the same mass before and after.

A theory is a well-thought-out elaboration for natural-world anecdotes that has been built using the methodological approach and incorporates many facts and hypotheses.

A scientific law, in overall, is a description of an observed phenomenon. It does not explain why or what causes the phenomenon.

A scientific theory is an explanation for a concept. It is a common misconception that with enough research, theories can become laws.

A law is more precise, such as this detailed definition of matter, whereas a theory is more general and frequently includes more of a why.

Atomic Theory explains why the law of conservation of matter exists; atoms simply rearrange and have the same mass before and after chemical reactions.

Thus, that's why, the law of conservation of mass law and not a theory.

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Answer:

The meaning of subconsciously is of or concerning the part of the mind of which one is not fully aware but which influences one's actions and feelings.

Explanation:

sleeping is an example of subconsciously

Answer:

V1=300ml

V2= x ml

T1= 45 Celsius

T2= 30 celcius

Do the math....

you will get

318x=90900

divide by 318

x=285.8 ml (rounded)

Explanation:

you have to add 45 and 30 (separately because the temp. has to be in kelvin) to 273... so V2 equals 2858.8 ml

Answer:

B

Explanation:

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

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Answer:

KNO3 is an example of a polyatomic ion

Explanation:

3+3+6=12 is the three numbers adding up to 12

The empirical formula of a 5g metal oxide that produced 4g of the metal upon reduction with hydrogen would be MO.

Let's assume that the formula of the metal oxide is XO.

Mass of XO = 5 g

Mass of X after reduction of XO with hydrogen = 4g

Mass of O = 5 - 4 = 1 g

Now, let's divide the mass of each component by their molar masses.

X  = 4/64 = 0.0625 mol

O = 1/16 = 0.00625

Dividing through by the smallest mol, what we are going to have is 1:1 mole ratio of the metal and oxygen. In other words, the empirical formula of the metallic oxide is XO.

If we replace X with M, the formula of the metallic oxide would be MO.

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answer:when an herbivore eats meat and a carnivore eats the herbivore energy from the eatin meat is passed indirectly to the carnivore.

Answer:

B. He could breed his peach plants with peach plants that can survive the frost.

Explanation:

Tom can best solve his problem by breeding his peach plants with the ones that can survive the frost.

Answer:

15 meters = 590,551 inches

Answer:

mass = 25.0 g

density = 1.48 g / cm^3

volume = ?

volume = mass / density

volume = 25 / 1.48

volume = 16.892 cm^3

Answer:

Sn is the oxidation agent and h2 is the reducing agent

Explanation:

Because oxidation agent means reduction which means the lose of oxygen and Sn lose oxygen.

While reduction agent means oxidation which also means the gain of oxygen and h2 gain oxygen.

I hope you understand my explanation if you need any help in chemistry I'm always here