Part ASome athletes have as little as 3.0 % body fat. If such a person has a body mass of 77 kg, how many pounds of body fat does that person have?Express your answer using two significant figures.

Answer:

Glucose!!

Explanation:

Also keep in mind that the actual sugar produced from photosynthesis is C6H12O6, which is the basis for glucose as well as other complex molecules

Answer:

Glucose

Explanation:

photosynthesis uses the energy from the light to convert carbon dioxide molecules which makes glucose

Approximately 35.2% of the Kcalories in a small order of McDonald's French fries come from fat.

Consuming a high amount of calories over a prolonged period can be harmful to your health in several ways:

Weight gain and obesity: Consuming more calories than your body needs can lead to weight gain and eventually obesity.

Cardiovascular disease: increased risk of developing cardiovascular disease.

Insulin resistance and type 2 diabetes: Consuming too many calories, particularly from sources such as refined carbohydrates and sugary drinks, can lead to insulin resistance.

Digestive problems: digestive problems such as constipation, bloating, and diarrhea.

Reduced lifespan: Studies have shown that consuming a high amount of calories can lead to a reduced lifespan.

To calculate the percentage of kcalories from fat in French fries, we need to know the total number of kcalories in the French fries and the number of kcalories that come from fat.

Assuming that the French fries contain 9 grams of fat per serving (which is the amount of fat in a medium order of McDonald's French fries), we can calculate the number of kcalories from fat as follows:

9 grams of fat x 9 kcalories per gram of fat = 81 kcalories from fat

If the French fries contain 230 kcalories per serving (which is the amount of calories in a small order of McDonald's French fries), we can calculate the percentage of kcalories from fat as follows:

81 kcalories from fat ÷ 230 total kcalories = 0.352 or 35.2%

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Answer:

The cyanidin indicator turns blue within a pH range of 5 - 7. The pH of the solution could be 5, 6 or 7.

An indicator is used to determine the endpoint of a titration.

Explanation:

Cyanidin indicator changes colour with each change in pH. In acidic solutions (pH < 7) cyanidin indicator will turn red, through to purple and blue, while in basic solutions (pH > 7), cyanidin indicator will change colour from aquamarine through to green and yellow. The cyanidin indicator turns blue within a pH range of 5 - 7.

Titration is a technique used in analytical chemistry to determine the unknown concentration of a solution. A solution of known concentration is added from a burette to the solution of unknown concentration until the reaction between the two solutions is complete. This known as the endpoint of the experiment. The endpoint of a titration is determined using an indicator which is added to reaction mixture. A colour charge is produced by the indicator at the endpoint of the reaction.

Note: An indicator is a dye of weak organic acids or bases which changes colour with changes in the pH of a solution. Some common indicators are methyl orange, methyl red, phenolphthalein, etc. These indicators are used to monitor the changes in the pH of solutions during a reaction.

Answer:

5,7,6

Explanation:

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The number of moles of carbondioxide that can fill the sealed container is 0.261moles.

The number of moles of an ideal gas can be calculated using the ideal gas law equation as follows:

PV = nRT

Where;

According to this question, a sealed container can hold 6.28L carbondioxide at 1.00 atm and 293 K. The number of moles of the gas can be calculated as follows:

1 × 6.28 = n × 0.0821 × 293

6.28 = 24.0553n

n = 6.28 ÷ 24.0553

n = 0.261moles

Therefore, 0.261moles is the number of moles of the gas that can fill the container.

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Answer:

The First Battle of Panipat was fought between the invading forces of Babur and the Lodi Empire, which took place on 21 April 1526 in North India. It marked the beginning of the Mughal Empire. This was one of the earliest battles involving gunpowderfirearms and field artillery.

For you to write an essay on  Panipat first bring into view

Then write a brief story using this format.

In writing this essay, you must consider the structure and content of the essay or short note

For structure kick off with

In conclusion, for the content of the short note you can consider this,

Panipat fought its first battle on 21 April 1526 in the North of India, This battle was fought between the invading powers of Babur and the Lodi Empire.

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When naming ionic compounds, the cationic part or the metal is named first. The name of Cs₂CO₃ is cesium carbonate and the name of SrI₂ is strontium iodide. SrCO₃ is named as strontium carbonate and CsI is cesium iodide.

Chemical formula of a compound is the simplest way to represent the compound. Chemical formulas help to identify and distinguish the compound easily.

The ionic compounds are named starting with the cationic part and secondly the anionic part. For example, the compound  Cs₂CO₃ is named starting with the metal part cesium then the anionic part carbonate. Thus, its name is cesium carbonate.

Similarly the two compounds of strontium are named as, SrI₂ - strontium iodide and SrCO₃  as strontium carbonate.

The ionic compound, CsI is named as cesium iodide.

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The sample contains 0.986 g of Carbon, 0.107 g of Hydrogen, 0.579 g of Nitrogen, and 0.328 g of Oxygen. This elemental composition matches that of MDMA and not caffeine. There are 0.0099 moles of MDMA present in the sample.

Nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78% of Earth's atmosphere. It is the most abundant element in the atmosphere, and is chemically unreactive under normal conditions. It is an essential element in all forms of life, and is a major component in amino acids and proteins. Nitrogen is also found in all plant and animal tissues, and is a necessary nutrient for their growth.

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Here are some examples of benzene aromatic compounds along with their structures:

some more examples of benzene aromatic compounds along with their structures:

These are just a few examples of the many different types of benzene aromatic compounds that exist.

As a whole, benzene aromatic compounds are a subclass of organic compounds that have a benzene ring as part of their structure. They are widely employed in many different applications, including medications, fuels, and solvents.

Depending on the situation, common names or IUPAC nomenclature may be used to name benzene aromatic compounds. Knowing the properties and structure of these compounds

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Explanation:

Given the following reaction:

H₂ (g) + Cl₂ (g) --> 2 HCl (g)

We have to find the ΔH for that reaction. We can estimate the change in enthalpy using the bond enthalpies.

We need to add energy to break a bond and energy will be released when a bond is broken.

ΔH = energy added to break bonds + energy released when making bonds

Now we have to find the bonds that are broken.

The reactants are H₂ and Cl₂. Hydrogen gas is a diatomic gas that has a single bond between both atoms of H (H-H). Chlorine gas also is a diatomic gas that has a single bond between both atoms of Cl (Cl-Cl).

Bonds broken = 1 (H-H) + 1 (Cl-Cl)

The product of our reaction is HCl. In this case it is a gas that has a single bond between the atoms of Cl and H. Since the coefficient of the reaction is two, we will have to form two bonds.

Bonds formed = 2 (H-Cl)

If we search for the values of the different bond enthalpies we can find that they are:

Bond enthalpy H-Cl = 431 kJ/mol

Bond enthalpy H-H = 436 kJ/mol

Bond enthalpy Cl-Cl = 242 kJ/mol

Finally we can replace these values in the formula and we can estimate the ΔH of the reaction. We have to pay attention that for breaking the bonds we have to add energy, so the bonds enthalpies are positive. When forming the bonds the energy is released so the bond enthalpies should be negative (we have to change the sign).

ΔH = energy added to break bonds + energy released when making bonds

ΔH = 1 (H-H) + 1 (Cl-Cl) - 2 (H-Cl)

ΔH = 436 kJ/mol + 242 kJ/mol - 2 * 431 kJ/mol

ΔH = -184 kJ/mol

Answer: the change in enthalpy for the reaction is -184 kJ/mol.

Mass that is number of protons and  neutrons is lost in an atom  as a result of radioactive decay.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

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Answer:

Pins - picked up

rice/flour - left behind

Explanation:

pins are metal = conductors

Answer:

If I'm correct i believe that the answer is A.

Answer:

A. Where warm moist air masses traveling north collide with cool dry air masses traveling south

Explanation:

I got it right

Answer:

yo whats good nebyu its nathan Imao

Explanation:

Explanation:

The molar volume corresponds to the volume occupied by any gas at STP, which is equal to 22.4 L.

So:

22.4 L ---- 1 mol

3.56 L ---- x mol

x = 0.159 moles

To find the molar mass we use the following formula:

molar mass = mass/moles

molar mass = 11.3/0.159

molar mass = 71.1

Answer: 71.1 g/mole

Among the given options the compound with the formula C₃H₈ is option C. It is an organic compound under named as propane.

What is propane?

Propane is an organic compound classified as a hydrocarbon  with saturated carbon - hydrogen bonds. It's formula is C₃H₈. It contains 3 carbons and 8 hydrogens.

The two end carbons contains 3 hydrogens each and the middle carbon contains 2 hydrogens. They are all bonded through sigma bonding. The compound in A is C₅H₁₂ and in B, it is C₆H₁₄.

The formula of the compound in option D is C₅H₁₀. Hence, the skeleton showing the compound with the formula of C₃H₈ is option C.

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The mass by volume percentage is an important method which is used to calculate the concentration of a solution. This type of concentration is usually expressed as a percentage. Here the amount of solute is

The mass by volume percentage of a solution is defined as the ratio of the mass of solute that is present in a solution relative to the volume of the solution as a whole.

The equation used to calculate the mass by volume percentage is:

m / v = Mass of solute / Volume (mL) of solution × 100 %

m / v = 50 g / 75 mL + 25 mL = 0.5  × 100 % = 50%

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Answer:

B

Explanation:

Elements in a group are determined by the number of valence electrons

Elements in a period are determined by the number of electrons shell

The electronic configuration of the element is

2,8,8

the number of valence electron is 8 that means it is in Group 8/O

the number of electron shell is 3 that means it is in period (row) 3

Group 8/O elements are called Noble gases

ideal gas

PV=nRT

T = PV/nR

T = 1 x 12/9 x 0.08205

T = 16.25 K

Don’t really know ‘bout this one, but here’s something I found.

Answer:

Isotopes are various forms of an element that have the same number of protons but a different number of neutrons. Some elements, such as carbon, potassium, and uranium, have multiple naturally-occurring isotopes. Isotopes are defined first by their element and then by the sum of the protons and neutrons present.

Carbon-12 (or 12C) contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12 amu (six protons and six neutrons).

Carbon-14 (or 14C) contains six protons, eight neutrons, and six electrons; its atomic mass is 14 amu (six protons and eight neutrons).

While the mass of individual isotopes is different, their physical and chemical properties remain mostly unchanged.

Water molecules did not have a slight negative charge on one end and a slight positive charge on another, the loss of polarity would have profound effects on various biological, chemical, and physical processes. The unique properties of water that are vital for life as we know it would be significantly altered, potentially rendering many biological systems nonfunctional and disrupting the stability of ecosystems.

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The required tubular length for 99.9% conversion is 116.84 meters.

On Earth, the rate at which cyclohexane reacts with benzene and methylcyclopentane is constrained by high mass transfer.

A tubular reactor with an internal diameter of 5 cm and a length of 20 m will be used to conduct the reaction, and cylindrical pellets with dimensions of 0.5 cm in diameter and 0.5 cm in length will be placed within the reactor's pipes.

Only the exterior surface of the pellets are coated.

The packed bed has a 40% porosity and a 60 dm3/min intake flow rate.

When the intake gas stream includes 5% cyclohexane and 95% hydrogen at 2 atm and 500°C, the tubular length vs. conversion graph should be drawn.

The graph may be used to identify the minimum length of tube necessary for 99.9% conversion.

For cyclohexane diffusion in hydrogen, the Fuller, Schettler, and Giddings Correlation is as follows:

a = 0.8854,

b = 1.764102,

C = 6.0231023.

The tube length vs. conversion graph may be displayed at 2 atm and 500°C when the incoming gas stream includes 5% cyclohexane and 95% hydrogen.

The following equation may be used to determine the rate of reaction:

ra=2.31011 exp[-88580/RT]C_A(1X)/3

The mole balancing equation for an isothermal tubular reactor is given as

dX/dL = -ra/C A,

where X is the conversion and L is the length.

To determine the length of the tubular reactor needed for a specific conversion X, we can integrate the aforementioned equation from X = 0 to X = X.

We must numerically calculate the following equation to obtain the necessary tube length for 99.9% conversion:

∫0.999L0−ra/CA 

dL=0.999XEq L 

for X=0.999

After rearranging the equation above, we get:

0.999L0ra/CA

dL=XX Eq

The aforementioned equation is integrated to give us

L = 116.84 m.

Therefore, the required tubular length for 99.9% conversion is 116.84 meters.

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Answer:

0.51

Explanation:

Given the Nernst equation;

E= E° - 0.0592/n logQ

E= 355 mV or 0.355 V

E° = 0.34 - 0= 0.34 V

n= 2(two electrons were transferred in the process)

Equation of the reaction;

H2(g) + Cu^2+(aq) -----> 2H^+(aq) + Cu(s)

Substituting values;

0.355 = 0.34 - 0.0592/2 log([H^+]/1)

0.355 - 0.34 = - 0.0296 log [H^+]

0.015/-0.0296 = log [H^+]

Antilog (-0.5068) = [H^+]

[H^+] = 0.311 M

pH = -log[H^+]

pH= - log(0.311 M)

pH = 0.51

The potential difference between the half cell of the electrochemical cell is called cell potential. The pH of the solution at 355 mV will be 0.51.

An electrochemical cell generates electricity from the redox chemical reactions occurring inside the cell.

The balanced chemical reaction is shown as,

\(\rm H_{2}(g) + Cu^{2+}(aq) \rightarrow 2H^{+}(aq) + Cu(s)\)

Using the Nernst equation:

\(\rm E= E^{\circ} - \dfrac{0.0592}{n }logQ\)

Given,

E = 0.355 V

E° = 0.34 V

n = 2

Substituting values in the above equation:

\(\begin{aligned} 0.355 &= 0.34 - \dfrac{0.0592}{2} \;\rm log(\dfrac{[H^{+}]}{1})\\\\0.355 - 0.34 &= - 0.0296 \rm \; log [H^{+}]\\\\\dfrac{0.015}{-0.0296} &= \rm \; log [H^{+}]\end{aligned}\)

Solving further,

\(\begin{aligned} \rm Antilog (-0.5068)& = \rm [H^{+}]\\\\\rm [H^{+}] &= 0.311 \;\rm M \end{aligned}\)

The pH of the solution is calculated as:

\(\begin{aligned} \rm pH &= \rm -log[H^{+}]\\\\&= \rm - log(0.311\; M)\\\\&= 0.51\end{aligned}\)

Therefore, 0.51 is the pH of the solution.

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The molarity of the HNO3 solution is 0.463 M.

To determine the molarity of the HNO3 solution, we can use the stoichiometry of the balanced chemical equation and the volume and molarity of the Ca(OH)2 solution used.

From the balanced equation, we can see that the stoichiometric ratio between HNO3 and Ca(OH)2 is 2:1. This means that for every 2 moles of HNO3, 1 mole of Ca(OH)2 is required to reach the equivalence point.

Given that the volume of the Ca(OH)2 solution used is 31.27 mL and its molarity is 0.167 M, we can calculate the number of moles of Ca(OH)2 used:

moles of Ca(OH)2 = volume (in liters) x molarity

= 0.03127 L x 0.167 mol/L

= 0.0052169 mol

Since the stoichiometric ratio is 2:1, the number of moles of HNO3 used is twice that of Ca(OH)2:

moles of HNO3 = 2 x moles of Ca(OH)2

= 2 x 0.0052169 mol

= 0.0104338 mol

Now we need to calculate the molarity of the HNO3 solution using the volume of the HNO3 solution used, which is 22.5 mL:

molarity of HNO3 = moles of HNO3 / volume (in liters)

= 0.0104338 mol / 0.0225 L= 0.463 M

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Answer:

The Changes I see is the Hot glass have less air bubbles than the Cold Glass. The Cold Glass has more air bubbles than the Hot Glass.

I hope this helps. I tried my best!! Good Luck!!

Answer:

1920 Joules

Explanation:

* means multiply

^ means exponent

kinetic energy is in Joules or J

kinetic energy = 1/2 * mass * (velocity)^2

kinetic energy = 1/2 * 60 * (8)^2

kinetic energy = 1/2 * 60 * (8*8)

kinetic energy = 1/2 * 60 * (64)

kinetic energy = 1920 Joules or 1920 J

Answer:

KE = 1920 J

General Formulas and Concepts:

Energy

Kinetic Energy Formula: \(\displaystyle KE = \frac{1}{2}mv^2\)

Explanation:

Step 1: Define

[Given] m = 60 kg

[Given] v = 8 m/s

Step 2: Find KE

Topic: AP Physics 1 Algebra-Based

Unit: Energy

Explanation:

7. the group of elements that are poor conductors of electricity and heat

nonmetal

The physical energy produced by electromagnetic radiation is known as radiant energy, and it is typically seen as a source's radiation spreads out into its surroundings.

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