4. When Wilson got down to the bottom of the ocean, he found a submarine. He wanted to try to get
in, but the door wouldn't open. Why? (Picture and description!!!)
Description:
5. With his super strength, Wilson finally got the door open. He found a treasure chest, so he
attached it to himself so he could bring it back to shore with him. He released the rock that he tied
himself to, but the treasure chest still held him down. He was beginning to panic, thinking that he was
stuck on the bottom of the ocean forever, until he saw a tank in the submarine. It was labeled
"Helium." The sailors on the boat must have blown up balloons for their entertainment (it CAN get
boring when out at sea). What do you think Wilson did to get back to shore? (There were no balloons
available, so that is not an option!) (Picture and description!!!)
Description:
Picture
Description:
Picture
O
6. Finally, Wilson made it back to the surface. What happens to Wilson, based on what you said he
did in #5? How can he fix that? (Picture and description!!!)
Picture

E°cell for each reaction, and rank the strengths of the oxidizing and reducing agents:

Complete the given reaction

\($$\mathrm{N}_{2} \mathrm{O}(g)+2 \mathrm{H}^{+}(a q)+2 \mathrm{Au}(s) \longrightarrow \mathrm{N}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(l)+2 \mathrm{Au}^{+}(a q)$$\)

Write the oxidation reaction

\($$\mathrm{Au}(s) \longrightarrow \mathrm{Au}^{+}(a q)+e^{-}$$\)

\($$E_{a c d}=-1.69 \mathrm{~V}$$\)

Write the reduction reaction

\($$3 \mathrm{~N}_{2} \mathrm{O}(g)+2 \mathrm{H}^{+}(a q)+2 \mathrm{e}^{-} \longrightarrow \mathrm{N}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(l) \quad E_{r e d}=+1.77 \mathrm{~V}$$\)

Calculate the standard cell voltage

\($$E_{c ell}=E_{r e d}+E_{o x d}$$\)

Substitute the value

\($$\begin{aligned}&E_{c e l l}=1.77-1.69 \\&E_{c e l l}=0.08 \mathrm{~V}\end{aligned}$$\)

Hence the standard cell potential is \($0.08 \mathrm{~V}$\)

Oxidizing agent in this reaction is

\($$\mathrm{N}_{2}(g), \mathrm{N}_{2} \mathrm{O}(g)$$\)

Reducing agent in this reaction is

\($$\mathrm{Au}^{+}(a q), \mathrm{Au}(s)$$\)

The potential difference between the two electrodes of an electrochemical cell, which develops when electrons are sent via the external circuit of a cell that has not reached equilibrium, is known as the cell potential.

A chemical process known as an oxidation-reduction (redox) reaction includes the exchange of electrons between two substances. Any chemical reaction in which the oxidation number of a molecule, atom, or ion changes due to the gain or loss of an electron is referred to as an oxidation-reduction reaction.

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Answer: A

Explanation:

Answer:

The answer is A

Explanation:

(a) The concentration of Pb in the solution is 2.67 parts per thousand.

(b) The volume of 16.3 pounds of ethyl alcohol is approximately 1.96 gallons.

(c) The % NaCl by mass in the solution is 20%.

(a) To calculate Pb in parts per thousand, we need to determine the ratio of the mass of Pb to the mass of the solution and then multiply by 1000.

Mass of Pb = 800 milligrams = 0.8 grams

Mass of solution = 300 grams

Pb in parts per thousand = (0.8 g / 300 g) × 1000

= 2.67 parts per thousand

(b) To find the volume of ethyl alcohol, we need to convert the given weight of 16.3 pounds to grams and then divide by the density of ethyl alcohol.

Mass of ethyl alcohol = 16.3 pounds

= 7397.68 grams (1 pound ≈ 453.6 grams)

Density of ethyl alcohol = 0.79 grams per milliliter

Volume of ethyl alcohol = (7397.68 g) / (0.79 g/mL) = 9363.59 milliliters

Volume in gallons = 9363.59 mL × 0.000264172 gallons/mL

= 1.96 gallons

(c) To determine the % NaCl by mass, we divide the mass of NaCl by the total mass of the solution and multiply by 100.

Mass of NaCl = 25 grams

Mass of water = 100 grams

Total mass of the solution = 25 grams + 100 grams = 125 grams

% NaCl by mass = (25 g / 125 g) × 100

= 20%

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Answer:

The number of protons in a water molecule (H2O) is equal to the number of hydrogen atoms in the molecule, which is 2. The molar mass of water is approximately 18.015 g/mol, which means that one mole of water contains Avogadro's number (6.022 x 10^23) molecules. Therefore, the number of protons in one mole of water is:

2 x 6.022 x 10^23 = 1.2044 x 10^24

To find the number of protons in 306 mL of water, we need to first convert the volume to moles. The density of water is approximately 1 g/mL, so the mass of 306 mL of water is:

306 mL x 1 g/mL = 306 g

The number of moles of water is then:

306 g / 18.015 g/mol = 16.991 mol

Multiplying this by the number of protons per mole, we get:

16.991 mol x 1.2044 x 10^24 protons/mol = 2.049 x 10^25 protons

Therefore, the answer is option D, 1 * 10 ^ 25

Answer:

\(\large \boxed{1.615 \times 10^{25}\text{ molecules water}}\)

Explanation:

You must calculate the mass of the water, convert it to moles, and then calculate the number of molecules.

1. Mass of water

\(\text{Mass } = \text{499.8 mL} \times \dfrac{\text{0.967 g}}{\text{1 mL}} = \text{483.3 g}\)

2. Moles of water

\(\text{Moles of water} = \text{483.3 g water} \times \dfrac{\text{1 mol water}}{\text{18.02 g water}} = \text{26.82 mol water}\)

3. Molecules of water

\(\text{No. of molecules} = \text{26.82 mol water} \times \dfrac{6.022 \times 10^{23}\text{ molecules water}}{\text{1 mol water}}\\\\= \mathbf{1.615 \times 10^{25}}\textbf{ molecules water}\\\text{The sample contains $\large \boxed{\mathbf{1.615 \times 10^{25}}\textbf{ molecules water}}$}\)

The number of molecules of water  present in the bottle is 1.62×10²⁵ molecules.

We'll begin by calculating the mass of the water in the bottle.

Mass = Density × Volume

Mass of water = 0.967 × 499.8

Mass of water = 483.3066 g

Finally, we shall determine number of molecules of water in the bottle.

From Avogadro's hypothesis,

1 mole of water = 6.02×10²³ molecules

But,

1 mole of water = 18 g

Thus, we can say that:

18 g of water = 6.02×10²³ molecules

Therefore,

483.3066 g of water = (483.3066 × 6.02×10²³) / 18

483.3066 g of water = 1.62×10²⁵ molecules

Thus, the number of molecules of water in the bottle is 1.62×10²⁵ molecules.

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Human activities that disrupt the carbon cycle include the burning of fossil fuels. The statement that best summarizes the disruption of the carbon cycle due to the burning of fossil fuels is: b) Burning fossil fuels adds carbon compounds to all Earth systems.

When fossil fuels, such as coal, oil, and natural gas, are burned, carbon that has been stored in these fuels for millions of years is released into the atmosphere as carbon dioxide and other greenhouse gases. This process significantly increases the amount of carbon compounds in Earth’s systems, including the atmosphere.

The burning of fossil fuels contributes to the increase in atmospheric CO2 levels, which is a major driver of anthropogenic climate change. The additional carbon compounds released from burning fossil fuels disrupt the natural balance of the carbon cycle by adding more carbon to the atmosphere than can be naturally absorbed by Earth’s systems. This leads to an accumulation of greenhouse gases and contributes to global warming and associated climate impacts. While other statements may partially describe the effects of burning fossil fuels on the carbon cycle, option b provides the most accurate and comprehensive summary of the disruption caused by this activity.

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Answer:

The answer is

Explanation:

To find the density of the sphere we use the formula

To find the density in g/cm³ first convert the mass into grams and the volume into cm³

For the mass we have

155 lb = 70306.82 g

For the volume

4.2 ft³ = 118930.76 cm³

Substitute the values into the above formula

That's

We have the final answer as

Hope this helps you

Answer:

c. add coefficients as needed

Explanation:

A chemical equation is defined as the equation that shows changes in a chemical reaction. A chemical equation consist of reactant and product, reactant is at left side of the arrow and product is at right side of the arrow.

Reactant => Product

While balancing a chemical equation, the basic rule is to balance the coefficient as required. Coefficient represents the number of molecules and is used at front of a chemical symbol. Change in coefficient helps balance the number of atoms or molecules of the substances on both the sides of the arrow.

Subscripts are never allowed to change because it can change the chemical involved in the reaction.

Hence, the correct answer is "c. add coefficients as needed".

The missing part of the equation is found to be 4/2He. Option A

The term nuclear equations have to do with the type of equation in which one type of nucleus is transformed into another sometimes by the bombardment or loss of a particle.

Now the full equation ought to be written as 7/3Li + 1/1H -----> 4/2He + 4/2He. This is because the total mass on the left is 8 and the total charge on the left is 4.

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According to the question , \(10^{80}\) protons create a galaxy.

1.67262 1027 kg, or 1,836 times the mass of an electron, is the rest mass of the proton, a stable subatomic particle with a positive charge that is equivalent to one electron's charge.

One down quark and two up quarks make up protons. Two down quarks and one up quark make up neutrons. One of the four fundamental forces, the "strong nuclear force," keeps the nucleus together (gravity and electromagnetism are two others).

The amount of protons in the cosmos is measured by the Eddington number , in astrophysics. Eddington estimated it to be approximately 1.571079; according to recent estimations \(10^{80}\)  .

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Answer:

d. 12.3 grams of Al2O3

Explanation:

The balanced equation in this question is as follows:

4Al + 3O2 → 2Al2O3

In this equation above, 4 moles of Al produces 2 moles of Al2O3

However, the moles of Al2O3 must first be found using;

mole = mass/molar mass

Molar mass of Al = 27g/mol

mole = 6.50/27

= 0.241mol of Al.

Hence, if 4 moles of aluminum (limiting reagent) reacts to form 2 moles of aluminum oxide (Al2O3).

Then, 0.241mol of Al will produce (0.241 × 2/4) = 0.241/2 = 0.121mol of Al2O3.

Convert this mole value to molar mass using mole = mass/molar mass

Molar mass of Al2O3 = 27(2) + 16(3)

= 54 + 48

= 102g/mol

mass = molar mass × mole

mass = 102 × 0.121

mass of Al2O3 = 12.34grams.

Answer:

formula of concentration ion.

The formula for density is:D=M/V,The peice of gold must be:               V=16.51 cm^3Au.

Why is density important?

The density of a place refers to the quantity of things—which may include people, creatures, plants, or objects—there are in it. Divide the quantity of objects even by area's measurement to determine density. A country's population density is calculated by dividing its total population by its area, expressed in square kilometres or miles.

In its simplest form, what is density?

We use the word "density" to indicate how much space (or "volume") an object or a substance occupies in terms of the amount of variables contained therein (its mass). Density can also be defined as the quantity of mass in a volume. A hefty, compact object has a high density.

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When two monosaccharide units react via their hydroxyl (OH) functional groups, a disaccharide is formed. The linkage between the monosaccharide units in a disaccharide is known as a glycosidic linkage.

The glycosidic linkage is a covalent bond that joins the two monosaccharide units together. It is formed through a dehydration or condensation reaction, where the hydroxyl group from one monosaccharide combines with the hydrogen atom from the other monosaccharide, resulting in the formation of a water molecule. The remaining oxygen atom from each monosaccharide forms the glycosidic bond.

The specific type of glycosidic linkage depends on the orientation of the hydroxyl groups involved in the reaction. Common types of glycosidic linkages include alpha and beta linkages. In an alpha linkage, the hydroxyl group involved in the reaction is positioned below the plane of the ring, while in a beta linkage, the hydroxyl group is positioned above the plane of the ring.

The type and position of the glycosidic linkage in a disaccharide determine its properties and functionality. Different disaccharides, such as sucrose, lactose, and maltose, have distinct glycosidic linkages, resulting in their unique structures and functions.


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Answer:

solid

Explanation:

lithium is a solid so it would still be solid since it is at 100 degrees and has not yet gotten to 180 degrees which is when it melts

If 2.35 grams of magnesium oxide are formed, 1.42 grams of Mg reacted in the reaction.

Magnesium oxide is a chemical compound composed of magnesium and oxygen, with the chemical formula MgO.

2 Mg(s) + O₂(g) -> 2 MgO(s)

From the equation, we can see that 2 moles of magnesium react with 1 mole of oxygen to produce 2 moles of magnesium oxide. This means that the mole ratio of magnesium to magnesium oxide is 2:2, or simply 1:1.

2.35 g MgO x (1 mol MgO/40.31 g MgO) = 0.0583 mol MgO

Since the mole ratio of Mg to MgO is 1:1, we know that 0.0583 moles of Mg also reacted. Now we can use the molar mass of Mg to calculate the mass of Mg that reacted:

0.0583 mol Mg x 24.31 g/mol = 1.42 g Mg

Therefore, 1.42 grams of Mg reacted in the reaction.

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Answer:

Arcuate: A fan-shaped delta, bowed or curved.

Cuspate: V-shaped delta.

Bird-foot: Outstretched claws delta

Inverted: The narrow end of delta, or river delta.

Waves: Large or regular shaped waves delta.

Tires: Round shaped delta

River estuary: A landform deposited by sediment

Explanation:

Mole fraction of KMnO4 = (0.07854 / 158.04) / [(0.07854 / 158.04) + (0.92146 / 18.015)] = 0.0051, Therefore, the mole fraction of KMnO4 in the aqueous solution is 0.0051.

The mole fraction of potassium permanganate, KMnO4, in an aqueous solution can be calculated using the formula:
Mole fraction of KMnO4 = (Mass fraction of KMnO4 / MW of KMnO4) / [(Mass fraction of KMnO4 / MW of KMnO4) + (Mass fraction of water / MW of water)]
Given that the aqueous solution is 7.854 wt % in KMnO4 and the MW of KMnO4 is 158.04 g/mol, we can calculate the mass fraction of KMnO4 as:
Mass fraction of KMnO4 = (7.854 g KMnO4 / 100 g solution) = 0.07854
The MW of water is 18.015 g/mol. Assuming the solution is dilute, we can approximate the density of the solution to be 1 g/mL. Using these values, we can calculate the mass fraction of water as:
Mass fraction of water = (100 g solution - 7.854 g KMnO4) / 100 g solution = 0.92146
Substituting these values in the formula for mole fraction, we get:
Mole fraction of KMnO4 = (0.07854 / 158.04) / [(0.07854 / 158.04) + (0.92146 / 18.015)] = 0.0051
Therefore, the mole fraction of KMnO4 in the aqueous solution is 0.0051.

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Electricity can be charged via a variety of techniques, such as frictional charging, contact charging, and induction charging.

For conducting electricity, metals like copper, iron, gold, aluminium, and silver work best. Via the electrodes in a standardised aqueous solution at a specific temperature, the electrical conductivity of a substance is measured.

A substance is a metal if it conducts electricity and has a basic oxide. A non-metal is an element whose oxide is acidic but not electrically conducting.

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Answer:What is happening to voltage-gated channels at this point in the action potential? Na+ channels are inactivating, and K+ channels are opening. Na+ channels are inactivating, and K+ channels are closing.

The name of the alkene displayed in the diagram is B. 2-methyl-1-propene.

Alkenes are a class of unsaturated hydrocarbons that contain at least one carbon-carbon double bond. They have the general chemical formula CnH₂n and are typically more reactive than their corresponding alkanes. Because of their double bond, alkenes can undergo addition reactions with other chemicals, such as hydrogen, halogens, and water.

Some common examples of alkenes include ethylene (C₂H₄) and propylene (C₃H₆), which are widely used in the chemical industry as starting materials for the production of plastics, synthetic rubber, and other materials.

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The outer shell of the given element was determined as illustrated must be a noble gas. Therefore, option D is correct.

Noble gases can be described as the 6 elements that are organized in group 18 of the modern periodic table. The noble gases are Helium, Neon, Argon, Krypton, Xenon, and Radon.

Under standard temperature and pressure, noble gases exist in the gaseous form and possess low reactivity. Therefore, noble gases are also referred to as inert gas.  All the noble gases exhibit stable electronic configurations in their valence shell that are completely filled. Noble gases generally exist as monoatomic.

The general outer configuration of the noble gases can be written as ns²np⁶,  n is the principal quantum number. Therefore, the given electron dot diagram has eight electrons in its valence shell so it is representing a noble gas.

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Answer:

With my knowledge you got 2. correct, but that's all I could say.

Answer:

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The molarity of a solution that contains 30g of Noah in 500ml of solution is 1.5

Molarity is a measure of the concentration of a solute in a solution, expressed as the number of moles per liter of solution (mol/L). It is an important part of chemistry, as it is used to describe the concentration of a solution and its components. When a solute is dissolved in a solvent, the resulting solution has a certain concentration of that solute. Molarity is a measure of this concentration, and it is calculated by dividing the number of moles of solute in the solution by the total volume of the solution. For example, if one mole of a solute is dissolved in one liter of solvent, the resulting solution has a molarity of 1M (1 mole/liter). Molarity is an important concept in chemistry because it can be used to calculate the amount of a solute that is present in a solution, and also to compare the relative concentrations of different solutions. It is also used to describe the reaction rates of solutions, and to determine the amount of reactants and products present in a reaction.

The molarity of a solution is given as-

m = n/v × 1000

Where n is the number of moles of v is the volume of the solution.

The molecular mass of NaOH is 23+16+1=40grams.

Thus the number of moles will be-

30/40 = 3/4

now

m = (3/4)/500 × 1000

m = 1.5

Thus, the molarity of a solution that contains 30g of Noah in 500ml of solution is 1.5.

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Complete question:

What is the molarity of a solution that contains 30g of Noah in 500ml of solution?

The energy an object has during its motion is known as the kinetic energy and the energy stored in an object is called the potential energy. The potential energy of the egg drop is 1.8 J.

The sum of potential energy and kinetic energy of an object is known as the mechanical energy. It describes the energy of an object due to its motion or position or both.

The equation of mechanical energy is:

Mechanical energy = Potential energy + Kinetic energy

Potential energy = Mechanical energy - Kinetic energy

2.3 J - 0.5 J = 1.8 J

Thus the potential energy of the egg drop is  1.8 J.

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