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1. Label each of the following organs on the picture below: pancreas, liver, stomach, small intestine,
large intestine.
2. In the space provided, describe the function of each organ you labeled.

Answer:

ELECTROPLATING

Explanation:

In silver plating, object (iron spoon) to be electroplated is made cathode, metal to be used for coating (bar of silver metal) as anode and silver nitrate solution  as electrolyte. When current passes, positive ions moved toward the cathode and thus silver is coated to the spoon.

The process of depositing a layer of any desired metal on another material, by means of electricity is called electroplating.

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diagram

Answer:

1.06 °C

Explanation:

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

Mass of gold (M₉) = 10 g

Specific heat capacity of gold (C₉) = 0.129 J/gºC

Initial temperature of gold (T₉) = 24 °C

Mass of water (Mᵥᵥ) = 118 g

Specific heat capacity of water (Cᵥᵥ) = 4.184 J/gºC

Initial temperature of water (Tᵥᵥ) = 1 °C

Equilibrium temperature (Tₑ) =?

The equilibrium temperature of the system can be obtained as follow:

Heat loss by the gold = heat gained by the water

M₉C₉(T₉ – Tₑ) = MᵥᵥCᵥᵥ(Tₑ – Cᵥᵥ)

10 × 0.129 (24 – Tₑ) = 118 × 4.184 (Tₑ – 1)

1.29(24 – Tₑ) = 493.712 (Tₑ – 1)

Clear bracket

30.96 – 1.29Tₑ = 493.712Tₑ – 493.712

Collect like terms

30.96 + 493.712 = 493.712Tₑ + 1.29Tₑ

524.672 = 495.002Tₑ

Divide both side by 495.002

Tₑ = 524.672 / 495.002

Tₑ = 1.06 °C

Therefore, the temperature of the system is 1.06 °C

The amount of heat of the system is measured by a device called a calorimeter. The final temperature of the system will be 1.06 degrees celsius.

The equilibrium temperature is the temperature that follows the law of thermodynamics and is said to be the system that has alike temperatures.  

Given,

Mass of Ag \(\rm (M_{g})\) = 10g

Specific heat capacity of Ag \((\rm C_{g})\) = \(\rm 0.129 J/g^{\circ}C\)

The initial temperature of Ag \((\rm T_{g})\) = \(24 ^{\circ}\;\rm C\)

Mass of water \((\rm M_{w})\) = 118 g

Specific heat capacity of water \((\rm C_{w})\) = \(4.184 \rm \;J/g^{\circ}\;\rm C\)

The initial temperature of water \((\rm T_{w})\) = \(1 ^{\circ}\;\rm C\)

Equilibrium temperature = \((\rm T_{e})\)

The equilibrium temperature can be shown as, heat loss by the gold = heat gained by the water:

\(\rm \rm M_{g}C_{g}(T_{g} - T_{e}) = M_{w}C_{w}(T_{e}-C_{w})\)

Substituting values in the equation:

\(\begin{aligned} 10 \times 0.129 (24 - \rm T_{e}) &= 118 \times 4.184 (\rm T_{e} - 1)\\\\\rm 1.29(24 - T_{e}) &= 493.712 (\rm T_{e} - 1)\\\\524.672 &= 495.002 \;\rm T_{e}\end{aligned}\)

Now divide both the sides by 495.002:

\(\begin{aligned} \rm T_{e} &= \dfrac{524.672 }{495.002}\\\\\rm T_{e} &= 1.06 \;^{\circ}\rm C\end{aligned}\)

Therefore, the final temperature of the system is 1.06 degrees celsius.

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Answer:

7.14%

Explanation:

From the question,

percentage by mass hydrogen in C₄H₈O₃ (h)   = mass of hydrogen present in C₄H₈O₃(m)/molar mass of C₄H₈O₃ (m')

h = (m'/m)×100..................... Equation 1

Given: m' = (14×4)+(1×8)+(16×3) = 56+8+48 = 112 g, m =  (1×8) = 8 g

Substitute these values into equation 1

h = (8/112)×100

h = 7.14%.

Hence the percentage of hydrogen in 70 g of C₄H₈O₃ is 7.14%

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You can identify the aldehyde from acidic potassium permanganate. Purple colour of acidic potassium permanganate is changed to colourless because aldehyde is oxidized by acidic potassium permanganate.

Answer:

Here are a few more examples:

Smoke and fog (Smog)

Dirt and water (Mud)

Sand, water and gravel (Cement)

Water and salt (Sea water)

Potassium nitrate, sulfur, and carbon (Gunpowder)

Oxygen and water (Sea foam)

Petroleum, hydrocarbons, and fuel additives (Gasoline)

Heterogeneous mixtures possess different properties and compositions in various parts i.e. the properties are not uniform throughout the mixture.

Examples of Heterogeneous mixtures – air, oil, and water, etc.

Examples of Homogeneous mixtures – alloys, salt, and water, alcohol in water, etc.

Explanation:

Answer:

smog,mud, cement?

Explanation:

Smoke and fog (Smog)

Dirt and water (Mud)

Sand, water and gravel (Cement)

Answer:

There are 1.8021⋅1024 molecules of CH4 in 48 grams of CH4 .

Explanation:

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Answer:

When rubbing a balloon with a wool cloth, it puts negative charges on the balloon. Negative charges attract to positive charges. ... When both balloons are rubbed with the wool cloth, the both receive negative charges, so they will repel each other.

the enthalpy of reaction for HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) 2NaCl(s) + H₂O(l) → 2HCl(g) + Na₂O(s) ∆H° = -507.1 kJ/mol NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol 2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol the enthalpy of reaction for the given reaction is -39.1 kJ/mol.

We can use the given reactions and their enthalpies to find the enthalpy of reaction for the given equation.

The given equation is:

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)

We can break down this reaction into several steps using the given reactions as follows:

Na₂O(s) + 2HCl(g) → 2NaCl(s) + H₂O(l) (reverse of the given reaction)

∆H° = +507.1 kJ/mol (reverse the sign of given reaction)

2NaCl(s) + H₂O(l) → Na₂O(s) + 2HCl(g)

∆H° = -507.1 kJ/mol (given reaction)

NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s)

∆H° = -427.0 kJ/mol (given reaction)

2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l)

∆H° = +34.02 kJ/mol (given reaction)

NO(g) + NO₂(g) → N₂O(g) + O₂(g)

∆H° = -43.01 kJ/mol (given reaction)

Now, we can add these equations and their enthalpies to get the overall enthalpy of the given reaction:

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)

H₂O(l) + 2NaCl(s) → Na₂O(s) + 2HCl(g) ∆H° = -507.1 kJ/mol

Na₂O(s) + NO(g) + NO₂(g) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol

2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol

NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) ∆H° = -39.1 kJ/mol

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Flow sheet for synthesis gas production process: Hydrocarbon preheater → Combustion chamber Reactor → Waste-heat boiler → Carbon removal unit → water-cooler scrubber → Synthesis Gas.

Temperature and Pressure Conditions:

Hydrocarbon Preheater: High temperature (depends on the specific hydrocarbon used)

Combustion Chamber: High temperature (due to controlled partial combustion)

Reactor: High temperature (to promote pyrolysis and gas formation)

Waste-heat Boiler: Moderate temperature (to recover heat from reactor effluent)

Carbon-Removal Unit: Moderate temperature (to remove carbon from gas)

Water Cooler-Scrubber: Low temperature (to cool and scrub the gas)

Synthesis Gas: At atmospheric pressure (or specified process pressure).

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Answer:

The answer for this selection is 4

Explanation:

Answer:

Atmospheric Pressure:

- It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes.

Explanation:

Hope this helps

Answer:

they can become smaller or start fall apart or aroud

Explanation:

Answer: the answer would be a lower specific heat.

Explanation:

The correct answer is : The early event in biofilm formation by Pseudomonas aeruginosa that involves the extension and retraction of a specific pilus is called twitching motility.

Explanation:
Biofilm formation is a process in which microorganisms attach to surfaces and form a protective layer. One of the key steps in this process is the extension and retraction of a specific pilus, which is a hair-like structure found on the surface of certain bacteria.

In the case of Pseudomonas aeruginosa, this pilus is called the type IV pilus and is involved in a process called twitching motility. This process allows the bacteria to move along surfaces and is crucial for the early stages of biofilm formation.

As the bacteria move, they secrete a slimy substance called an exopolysaccharide, which helps them to adhere to surfaces and form a protective layer. This is an important step in the formation of biofilms, which can have serious implications for human health, as they are often resistant to antibiotics and can cause infections.

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Hope you could understand.

If you have any query, feel free to ask.

Answer:

Maybe D? B?

Explanation:

Sorry if I made u get it wrong

Answer:

0.382g

Explanation:

Step 1: Write the reduction half-reaction

Al³⁺(aq) + 3 e⁻ ⇒ Al(s)

Step 2: Calculate the mass of Al produced when a current of 100. A passes through the cell for 41.0 s

We will use the following relationships.

The mass of Al produced is:

\(41.0s \times \frac{100C}{s} \times \frac{1mole^{-} }{96486C} \times \frac{1molAl}{3mole^{-} } \times \frac{26.98gAl}{1molAl} = 0.382gAl\)

Answer:

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.

Explanation:

This means that a system always has the same amount of energy unless it's added from the outside. is the total internal energy of a system.

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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True. I am always sad but my heart is always happy cuz it knows there are good things ahead

Answer:

H

2

O

2

(aq)+ClO

4

−

(aq)⟶O

2

(g)+ClO

2

−

(aq)

All atoms except H and O are balanced.

The oxidation number of Cl changes from 7 to 3. The change in the oxidation number is 4.

The oxidation number of O changes from -1 to 0. The change in oxidation number per O atom is 1.

Total change in the oxidation number for 2 oxygen atoms is 2.

To balance the increase in oxidation number with decrease in the oxidation number, multiply H

2

O

2

and O

2

with coefficients 2.

2H

2

O

2

(aq)+ClO

4

−

(aq)⟶2O

2

(g)+ClO

2

−

(aq)

To balance O atoms, add 2 water molecules on RHS.

2H

2

O

2

(aq)+ClO

4

−

(aq)⟶2O

2

(g)+ClO

2

−

(aq)+2H

2

O(l)

The oxygen atoms are already balanced.

This is the balanced chemical equation

Answer:

0.001 mol/dm^3.

Explanation:

The pH of a solution is defined as the negative base-10 logarithm of the concentration of hydrogen ions (H+) in moles per liter (M).

The pH of 3 moldm^-3 means the concentration of hydrogen ions in the solution is:

[H+] = 10^(-pH) mol/L

[H+] = 10^(-3) mol/dm^3

[H+] = 0.001 mol/dm^3

Therefore, the concentration of H+ in pH 3 moldm^-3 is 0.001 mol/dm^3.

The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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The mass (in grams) of lead that will plate out of the solution, given that 3.91 A is passed through the solution for 1.7 h is 25.66 g

First, we shall determine the charge flowing through the solution. This is shown below:

Q = It

Q = 3.91 × 6120

Q = 23929.2 C

Finally, we shall determine the mass of lead that will plate out of the solution. Details below:

Balanced equation

Pb²⁺ + 2e —> Pb

From the balanced equation above,

193000 C plated 207 g of lead

Therefore,

23929.2 C will plate = (23929.2 × 207) / 193000 = 25.66 g of lead

Thus, the mass of lead that  will plate out is 25.66 g

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Answer:

hydrogen bond is a type of dipole-dipole interaction; it is not a true chemical bond it is a mere electrostatic attraction. These attractions can occur between molecules or within different parts of a single molecule. Intramolecular hydrogen bonds are those which occur within one single molecule.

Explanation:

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