caffeine lewis structure

Option B: voluntary muscles are the muscles which have complete control and are responsible for all kinds of movements.

Animals' muscles are the types of tissue that cause movement or motion. Voluntary refers to action taken of one's own free will or will. All of the muscles that are linked to the skeleton are voluntary muscles, hence these muscles are also referred to as skeletal muscles or striated muscles because of the way their muscle fibres give them a striated, or stripy, appearance. This, therefore, tells us that option B is he right choice.

The only muscles that can be actively manipulated are those in the skeleton. Since the muscles are connected to the bones, pulling on them moves the bones. Skeletal muscles are used for every conscious movement a person makes.

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Answer:

why would u want 2?

Explain in the comments why.

If 8 moles of FeS2 react with 15 moles of O2, the limiting reactant is O2.

4 moles of FeS₂ reacts with 11 moles of O₂

15 moles of O₂ is available. In comparison with 22 moles, O₂ is in short supply .

Therefore, If 8 moles of FeS2 react with 15 moles of O2, O₂ is the limiting reagent.

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Answer:

They are right it's O2

Explanation:

I accidently rated it low but it's 100% right

Without a picture I can't answer

The molarity of a solution that was prepared by dissolving 82.0 g of calcium chloride in enough water to make 812 mL of solution is 0.91M.

Molarity is the concentration of a substance in solution, expressed as the number moles of solute per litre of solution

The Molarity of a solution can be calculated using the following formula:

Molarity = no of moles ÷ volume

According to this question, a solution was prepared by dissolving 82.0 g of calcium chloride in enough water to make 812 mL of solution. The molarity can be calculated as follows:

no of moles of Calcium chloride = 82.0g ÷ 110.98 g/mol = 0.74 mol

Molarity = 0.74 ÷ 0.812 = 0.91M

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Explanation:

Fe= 55.8 F=18.9

FeF3 = 55.8 + (18.9×3)

= 55.8 + 56.7

= 112.5

Therefore 1 mole of FeF3 = 112.5g

If 1 mole = 112.5, the 15 moles = x

1 mole = 112.5g

x mole = 15g

~cross multiply~

x = 15 ÷ 112.5

x = 0.133 (recurring decimal)

Therefore, there are 0.133 moles in 15g of FeF3

Answer:

The correct answer is (A) "the molar amount of the gas".

Explanation:

I got it correct on Edge.

Answer:

113562  milliliters are in a 30 gallon drum

Explanation:

because you have to convert gallons into milliliters

could you put my answer as the brainist!!!!!!!

Answer:

False

Explanation:

While we do know that A. Leeuwenhoek used a simple microscope that consisted of only 1 lens, Hooke used a compound microscope. Although, after trying a compound microscope, Hooke found out that it strained his eyes and continued to use a simple microscope for his Micrographia.

Thus, we can say that the (compound) microscopes used today are different than the (simple) microscope used by Hooke and Leeuwenhoek.

The low concentration of phosphates in soil solution can be attributed to factors such as adsorption, precipitation, and immobilization.

Phosphates (PO₄³⁻) are an essential nutrient for plant growth, and their availability in soil solution is crucial for plant uptake. However, several factors contribute to the low concentration of phosphates in the soil solution:

1. Adsorption: Phosphates have a strong affinity for soil particles, particularly clay and organic matter. They can readily adsorb onto the surfaces of these particles, reducing their concentration in the soil solution and making them less accessible to plants.

2. Precipitation: Phosphates can react with cations, such as calcium (Ca²⁺) and iron (Fe³⁺), to form insoluble compounds like calcium phosphate or iron phosphate. These precipitates further decrease the concentration of phosphates in the soil solution.

3. Immobilization: Soil microorganisms and organic matter can immobilize phosphates by incorporating them into their biomass. This immobilization process temporarily removes phosphates from the soil solution, limiting their availability to plants.

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The chemical element that is formed when I-131 undergoes beta-minus decay is Xe.

A beta minus decay is one in which an electron is changed into a proton. The atomic number of the daughter nucleus will increase by one unit and is one place after the parent in the periodic table.

The chemical element that is formed when I-131 undergoes beta-minus decay is Xe.

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Velocity = Frequency x Lambda

Assuming that this is referring to an electromagnetic wave. The velocity of light is 2.998 x 10^8 m/s.

Convert the wavelength from cm to m. So divide it by 100 and you get 5.4x10^-7 meters.

2.998 x 10^8 = 5.4 x 10^-7 (λ)

Solve for λ and you get 5.55 x 10^14 Hz

The frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

Frequency can be defined as the number of oscillations of a wave in one second. The frequency of the wave has S.I. units which are per second or hertz.

Wavelength can be described as the distance between the two most adjacent points in phase with each other. Two adjacent crests or troughs on a wave are separated by a distance of a single wavelength.

The relationship between frequency, speed of light, and wavelength is:

c = νλ

Given, the wavelength of the wave, λ = 5.4 ×10⁻⁵ cm

Then the speed of the wave is speed of light, c = 3 ×10¹⁰ m/sc

The frequency of the waves can be calculated from the above mentioned relationship:

The frequency of the given wave will be equal to:

ν = c/λ = 3× 10¹⁰/5.4 ×10⁻⁵ = 5.55 ×10¹⁴ s⁻¹

Therefore, the frequency of the wave is equal to 5.55 ×10¹⁴ s⁻¹.

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Answer:

ll

Explanation:

brainlest if this helped

Explanation:

The symbol of the eyes of syambhunath stupa refers to the eyes of gautam buddha also known as the eyes of wisdom. These eyes are prevalent throughout the country and have become a symbol of peace.

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The attributes of the genetic code include all of the following except B. Each codon specifies more than one amino acid.

A. Each codon consists of 3 nucleotides: This is a correct attribute of the genetic code. Codons are made up of three consecutive nucleotides, which form the basic unit of the genetic code.

B. Each codon specifies more than one amino acid: This is incorrect. Each codon typically specifies only one amino acid. However, there are some exceptions called "ambiguous codons" where a single codon can code for more than one amino acid, but they are relatively rare.

C. Codons are non-overlapping: This is a correct attribute of the genetic code. Codons are read sequentially and are not overlapping. Each codon starts at a specific position in the DNA or mRNA sequence.

D. Most amino acids are specified by more than one codon: This is a correct attribute of the genetic code. With a few exceptions, most amino acids are encoded by multiple codons. This redundancy provides some level of error tolerance and allows for variations in the DNA sequence without affecting the encoded protein.

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the equilibrium constant for the given reaction at 298 K is 8.96 x 10^-7.

The equilibrium constant for the given reaction, CIO(g) + O2(g) → Cl(g) + O3(g), at 298 K can be determined using the Gibbs free energy of the reaction and the following equation:ΔG° = - RT lnK

where ΔG° is the standard Gibbs free energy change, R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant.

The equation can be rearranged to solve for K:K = e^(-ΔG°/RT)where e is the natural logarithmic base, and all other variables are the same as in the previous equation.Substituting the given values,

we have:ΔG° = 34.5 kJ/molR = 8.314 J/(mol·K)T = 298 K

Using these values, we get:-

ΔG°/RT = (-34.5 × 10^3 J/mol) / (8.314 J/(mol·K) × 298 K)

= -13.19e^(-ΔG°/RT) = e^(-13.19) = 8.96 × 10^-7

Therefore, the equilibrium constant for the given reaction at 298 K is 8.96 x 10^-7.

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Answer:0.144gWorking out:mol= conc x volume (in dm^3)mass = mol x RFFSo,mol = 0.18 x (20/1000) = 0.0036molMass= 0.036 x 40 = 0.144g.

Explanation:

Answer: There is 0.8 liters (L) of water required to be added to prepare 4800mL of 0.5M NaCl from a 3M NaCl stock solution.

Explanation:

Given: \(M_{1}\) = 0.5 M        

\(V_{1}\) = 4800 mL

Convert mL into L as follows.

\(1 mL = 0.001 L\\4800 mL = 4800 mL \times \frac{0.001 L}{1 mL}\\= 4.8 L\)

\(M_{2}\) = 3 M

Formula used to calculate the volume of water required as follows.

\(M_{1}V_{1} = M_{2}V_{2}\)

Substitute the values into above formula.

\(M_{1}V_{1} = M_{2}V_{2}\\0.5 M \times 4.8 L = 3 M \times V_{2}\\V_{2} = \frac{0.5 M \times 4.8 L}{3 M}\\= 0.8 L\)

Thus, we can conclude that 0.8 liters (L) of water need to be added to prepare 4800mL of 0.5M NaCl from a 3M NaCl stock solution.

If the volume and amount of gas remains constant, the pressure of an ideal gas inside a container will increase if the temperature increases from 10 oC to 100 oC.

This relationship is described by the Ideal Gas Law, which states that the pressure (P), volume (V), amount of gas (n), and temperature (T) of an ideal gas are related by the equation PV = nRT, where R is the gas constant. If the volume and amount of gas remain constant, the equation can be rearranged to give P/T = constant. This means that if the temperature of the gas increases, the pressure must also increase in order to keep the ratio P/T constant.

Therefore, if the temperature of an ideal gas inside a container increases from 10 oC to 100 oC, and the volume and amount of gas remain constant, the pressure of the gas will increase. This relationship is important in many applications, such as in the design and operation of engines and other devices that use gases.

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Answer:

Zn + H2SO4  ZnSO4 + H2

Explanation:

Start by balancing the equation. This one is already balanced.

(1 zinc, 2 hydrogen, 1 sulfur and, 4 oxygen on each side of the equation).

The mole ratio just refers to the coefficient (the number before each molecule or atom). Since there are no numbers in this equation all coefficients are 1.

Mole ratio = 1:1

1.22 grams of water has 5.0 x10^22 H2O water molecules.

A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds. There is no guarantee that the term will include ions that meet this criterion, depending on the context.

Calculate the number of moles of water = mass / molar mass of water

Moles = 1.2 g/ 18 g/mol = 0.083 mol H2O

1 mole of any substance = 6.02 x 10^23 H2O molecules (Avogadro's number)

Resolution:

Molecules = 0.083 moles (6.02 x 10^23 H2O molecules/mole)

= 0.5 x 10^23 or 5.0 x10^22 H2O molecules

answer:

Number of molecules = 5.0 x 10^22 H2O molecules  

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A student bends a paperclip rapidly back and forth when he touches the point where he was bending the paperclip, he finds that its temperature has increased because temprature goes up at the point of the bending

Temprature is the degree of hotness and coldness and here when student  bends a paperclip rapidly back and forth he touches the point where he was bending the paperclip then the temprature is increases because of temprature goes up at the point of the bending and molecule of clip start moving slower

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The percent composition of copper in CuCl2 is approximately 47.29%.

The molar mass of CuCl2 is approximately 134.45 g/mol (63.55 g/mol for copper + 2 x 35.45 g/mol for chlorine).

To calculate the percent composition of copper (Cu) in CuCl2, we need to determine the mass of copper in 1 mole of CuCl2.

The mass of copper in 1 mole of CuCl2 is 63.55 g/mol (the molar mass of copper).

So, the percent composition of copper in CuCl2 is:

(63.55 g Cu / 134.45 g CuCl2) x 100% = 47.29%

Therefore, the percent composition of copper in CuCl2 is approximately 47.29%.

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Answer:

Examine the units: If the density is 1 g/mL, how many mL do you need to make 250 g?

X mL * 1 g/mL = 250 g

Solve for X

x mL = 250 g / 1 g/mL = 250 mL

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The volume of water = 250 L

\(density = \frac{mass}{volume}\)

Given, density = 1.0 g/L = 0.001 kg/L

           mass = 250 g = 0.25 kg

Putting the values in the equation

\(0.001 = \frac{0.25}{volume}\)

\(volume = \frac{0.25}{0.001}\)

\(volume = 250 L\)

Hence, the volume of the water is 250 L.

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Percent composition indicates the relative amounts of each element in a compound. For each element, the mass percent formula is: % mass = (mass of element in 1 mole of the compound) / (molar mass of the compound) x 100% or. mass percent = (mass of solute / mass of solution) x 100%.

Answer:

Compounds :

Water,acid,chloride,hydroxide, and sulfate

Properties :

Density, color, mass, volume, length, malleability, melting point, hardness, odor, and  temperature

Explanation:

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