14. A large helium balloon has a volume of 3.00 L when the pressure on the balloon is 2 atm.
What volume would the balloon have if the pressure was 8 atm?

Verify that the number of atoms of each element is equal on both sides of the equation and, if the equation contains ions, that the charges are balanced equation.

The number and type of each atom in balanced chemical equations are the same on both sides of the equation. The simplest whole number ratio must be used as the coefficients in a balanced equation. In chemical processes, mass is always preserved.

Each element must have the same number of atoms on the left as it has on the right. You must add integers to the left of one or more equations to balance an imbalanced equation.

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Answer: The answer is A heat and pressure

Explanation:

Of the options given, lipids are considered a macronutrient.

Macronutrients are nutrients that the body requires in large amounts to function properly and maintain health. The three primary macronutrients are carbohydrates, proteins, and fats (lipids). Lipids are a type of nutrient that includes fats, oils, and cholesterol, and they are essential for the body's energy production, insulation, and the formation of cell membranes.

Vitamins and minerals, on the other hand, are considered micronutrients, which are nutrients that the body requires in smaller amounts but are still essential for proper health and functioning. Vitamins are organic compounds that help regulate various bodily functions, while minerals are inorganic substances that are necessary for proper cellular function, enzyme activity, and other bodily processes.

Therefore, option (a) lipids is the correct answer, as it is the only macronutrient among the given options.

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Answer:

1) Change HCl into 2HCl

2) Change HCl into 2HCl

3) Change Al into 8Al, Fe3O4 into 3Fe3O4, Al2O3 into 4Al2O3 and Fe into 9Fe

4) Change HBr into 2HBr

5) Change NaI into 2NaI and Na2S2O3 into 2Na2S2O3

6) Change LaCl3 into 2Lacl3, Na2CO3 into 3Na2Co3 and NaCl into 6NaCl

Answer: can I suck your super long di ck or titis

Explanation:

Answer:

hi

Explanation:

Answer:

A chemical change occurred, a gas and precipitate was produced

Explanation:

From the question , we are informed of science lab, where Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles to the bottom.

In this case the change that took place is chemical change ( is one where new product are formed after two substance react) the bubbles that is produced signify the presence of gas in the product, white solid formed is reffered to as a precipitate( which is reffered to as solid that is been formed from a particular solution).

The percent yield of \(MgO\) is 58.79%

According to the following balanced reaction, magnesium interacts with oxygen to generate magnesium oxide:

\(2Mg + O_2 \rightarrow 2MgO\)

Given mass of solid magnesium = 0.261g

Molar mass of Mg = 24g/mol

Using formula , \(Number of moles =\dfrac {mass} {molar mass} = \dfrac {0.261g} {24g/mol} = 0.0108mole\)

We could theoretically make 0.0108 moles of \(MgO\) since the reaction yields an equimolar quantity of \(MgO\). It is clear from the above reaction that 2 moles of magnesium result in 2 moles of magnesium oxide.

Hence, mass of \(MgO\) = Number of moles \(\times\) Molar mass of MgO

mass of \(MgO\)  = \(0.0108mole \times 40g/mole = 0.432g\)

Percent yield =  \(\dfrac{Actual mass of MgO} {Theoretical mass of MgO} \times 100\)

                       =  \(\dfrac{0.254} {0.432} \times 100 = 58.79percentage\)

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Binding proteins have significant roles in the maintenance of a high concentration of specific metabolites.

These proteins have high affinity for their substrates, and it is the specificity and affinity that allow them to sequester substrates from low-concentration environments.

The percentage of substrate bound can be high even when a binding protein has a low affinity for its substrate. To achieve this, the protein has to form a complex with its substrate at a specific ratio. The high percentage of substrate binding is achieved through cooperative binding. When the protein binds to one molecule of substrate, its structure undergoes a change. This makes it easier for the other substrate molecules to bind. Binding proteins that sequester substrates often contain multiple binding sites. The first binding event at the first site makes it easier for the other substrate molecules to bind at other sites. In summary, binding proteins have high affinity for their substrates and are involved in sequestration of specific metabolites. To have a high percentage of substrate bound, a binding protein has to form a complex with its substrate at a specific ratio. The cooperative binding of the protein makes it easier for other substrate molecules to bind at other sites.

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Answer:

THE PRESSURE EXERTED BY THE GAS IS THEREFORE 2.88 atm.

Explanation:

Boyle's law states that at constant temperature, the volume of a given mass of gas is inversely proportional to the pressure of the gas.

Mathematically, P1 V1 = P2 V2

Write out the values of the variables given:

P1 = 2.4 atm

V1 = 1.8 L

V2 = 1.5 L

P2 = unknown

Re-arranging the variables by making P2 the subject of the equation, we have:

P2 = P1 V1 / V2

P2 = 2.4 * 1.8 / 1.5

P2 = 2.9=88 atm

Hence, the pressure exerted by the gas is therefore 2.88 atm

Answer:

The correct option is;

c. Bromine, zinc, calcium, radium

Explanation:

The atomic radii of the elements as arranged in the periodic table decreases across the period and increases down the groups

The location of each of the elements are;

Zinc: Period 4, Group 12

Calcium: Period 4, Group 2

Radium: Period 7, Group 2

Bromine: Period 4, Group 17

Therefore, the element with the largest atomic radius = Radium

The element with the smallest atomic radius = Bromine

Calcium comes before zinc on period 4, therefore, the atomic radius of calcium is larger than that of zinc

The rank of the elements from smallest to largest atomic radius is therefore;

Bromine, zinc, calcium, radium.

Answer:

575 g

Explanation:

1 kg of sodium hydroxide is 1000/40=25 mol.

So 25 mol of sodium will be needed.

25 mol of sodium is 575 g.

According to the stoichiometry of the given chemical equation, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

46 g sodium gives 80 g sodium hydroxide, thus 1000 g sodium hydroxide requires 46×1000/80=575 g sodium.

Thus, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

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The volume of the balloon in Death Valley would be approximately 15.27 L.

To solve this problem, we can use the ideal gas law, which states:

PV = nRT

Where:

P = pressure (constant)

V = volume

n = number of moles of gas (constant)

R = ideal gas constant

T = temperature in Kelvin

First, let's convert the temperatures from Celsius to Kelvin:

Temperature in Los Angeles (T1) = 25°C + 273.15 = 298.15 K

Temperature in Death Valley (T2) = 52°C + 273.15 = 325.15 K

Since the pressure is the same in both places, we can simplify the equation to:

V1 / T1 = V2 / T2

Now we can plug in the values we know:

V1 = 14.0 L

T1 = 298.15 K

T2 = 325.15 K

Solving for V2, the volume in Death Valley:

V2 = (V1 * T2) / T1

V2 = (14.0 L * 325.15 K) / 298.15 K

V2 ≈ 15.27 L

Therefore, the volume of the balloon in Death Valley would be approximately 15.27 L.

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We can answer this question using the formula: q=mcΔT

q = heat (joules, J)

m = mass (g)

c = specific heat capacity (J/g°C)

ΔT = change in temperature (temp final - temp initial) in °C

Specific heat capacity: the amount of energy required to increase the temperature of 1 g of an object by 1°C

Using the information and isolating for m:

q = 28.5 g

Answer:

đoán xem

Explanation:

Answer:

Doam exnbhbjnmcgiojrrflcgggohotjg

939.067MeV is the energy required to extract a proton from a nucleus.

△m= mass of nucleus − mass of proton

= (mass of neutron + mass of proton) - mass of proton

= mass of neutron

= 1.008665amu

E=1.008665 X 931=939.067MeV

After absorbing a neutron, heavy nuclei can occasionally decay and turn into radioactive nuclei. A proton would ultimately be lost, along with perhaps one or two neutrons.

For C12 and C13, the binding energy per nucleon is 7.68 MeV and 7.47 MeV, respectively. The power needed to take a neutron out of C13 is Not to worry! Our team has your back.

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Answer:

K potassium have least ionization energy among these four

Explanation:

Ionization energy values are given in kilo joule per mole

Ca 590

Ge 762

K 419

Ga 579

From above data we can understand stand K has least and Ge has highest ionization energy

Answer:

Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move

Explanation:

Taking into account the definition of molarity, the concentration of the solution is 0.48 mol/L.

Molarity is the concentration of a solution expressed in the number of moles dissolved per liter of solution.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles÷ volume

Molarity is expressed in units moles/L.

The molar mass is the amount of mass that a substance contains in one mole.

In this case, you know:

Replacing in the definition of molar mass:

110.9 g/mole= 32 g÷ number of moles

Solving:

110.9 g/mole ×number of moles= 32 g

number of moles= 32 g÷ 110.9 g/mole

number of moles= 0.2885 moles

Then, you know:

Replacing in the definition of molarity:

molarity= 0.2885 moles÷ 0.6 L

Solving:

molarity= 0.48 moles/L

Finally, the molarity of the solution is 0.48 mol/L.

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Answer:

No. of neutrons = 27 - 13 = 14

No. of protons = No. of electrons = 13

Hope it helps you

Using a stoichiometric calculation, it was determined that 178.43 grams of nitrogen are needed to produce 325 grams of ammonia.

We can use a simple stoichiometric proportion to calculate this. First, we write the reaction:
\(N_{2} + 3H_{2}\) → \(3 NH_{3}\)

We can see that 1 mole of nitrogen produces 2 moles of ammonia.

Nitrogen's molar mass is 2 * 14 = 28 g/mol.

The molar mass of ammonia is 14 + 3 * 1 = 17 g/mol.

Based on this and the reaction equation, we can say that 28 grams of nitrogen produce 3 mol * 17 g/mol = 51 g of ammonia.

Now, we make a proportion:

28 g of nitrogen : 51 g of ammonia = X : 325 g of ammonia

X = 28 g of nitrogen * 325 g of ammonia / 51 g of ammonia = 178.43 g of nitrogen

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they get closer together

The suitable metals for use as sacrificial anodes to protect against corrosion of underground iron pipes are magnesium, zinc, and aluminum.

These metals have a higher electrochemical potential than iron, which causes them to corrode instead of the iron pipe. This sacrificial corrosion helps protect the iron pipe from further damage. Other metals like copper, silver, and gold are not suitable as sacrificial anodes because they have a lower electrochemical potential than iron, meaning they will not corrode in preference to the iron pipe.

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Answer:

hehe you might think im crazy but this answer makes no sEnSe

Explanation:

Answer:

Physical

Explanation:

When a substance changes from liquid to gas it's a physical change. There is no chemical reaction between the rubbing alcohol or anything else that would change it's chemical composition.

Answer:

Explanation:
Mass=0.52kg
Gravitational constant g=9.8
Height h=3.4m
Potential Energy(PE)=h*mg
PE=3.4*0.52*9.81
PE=17.344j

Answer:

1.4 L

Explanation:

From the question given above, the following data were obtained:

Initial volume (V1) = 1.3 L

Initial temperature (T1) = 280 K

Final temperature (T2) = 303 K

Final volume (V2) =?

With the above data, we can obtain the new volume of the gas by using the Charles' law equation as shown below:

V1 /T1 = V2 /T2

1.3/280 = V2 /303

Cross multiply

280 × V2 = 1.3 × 303

280 × V2 = 393.9

Divide both side by 280

V2 = 393.9/280

V2 = 1.4 L

Thus, the new volume of the gas is 1.4 L

The final molarity of potassium cation in the solution is 0.759 M.

What is the equation for calculating the molarity of a solute in a solution?

The final molarity of potassium cation in the solution is 0.759 M.

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