Solid silver chloride and an aqueous solution of nitric acid are produced when a solution if silver nitrate is reacted with a solution of hydrochloric acid.

Write a word and skeleton equation

The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Answer:

C2H4(g) + 3O2(g) ----> 2CO2 + 2H2O(l)

Mg(s) + 2HCL(l) ----> MgCl2(aq) + H2(g)

Answer: MCCCMC

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The metal X has an approximate molar mass of 42.36 g/mol and the metal is most likely calcium.

The molar mass of the metal carbonate XCO₃ and identify the metal X, we need to calculate the number of moles of XCO₃ and CO₂ using the given masses and molar masses.

The molar mass of CO₂ (carbon dioxide) is 12.011 g/mol (for carbon) + 2 * 15.999 g/mol (for oxygen) = 44.01 g/mol.

The number of moles of CO₂ can be calculated using the formula:

moles of CO₂ = mass of CO₂ / molar mass of CO₂

moles of CO₂ = 0.855 g / 44.01 g/mol

moles of CO₂ ≈ 0.01944 mol

Since the reaction stoichiometry is 1:1 between XCO₃ and CO₂, the number of moles of XCO₃ is also approximately 0.01944 mol.

molar mass of XCO₃ = mass of XCO₃ / moles of XCO₃

molar mass of XCO₃ = 2.012 g / 0.01944 mol

molar mass of XCO₃ ≈ 103.38 g/mol

The molar mass of XCO₃ is approximately 103.38 g/mol.

To determine the metal X:

molar mass of X = molar mass of XCO3 - molar mass of CO3

molar mass of X = 103.38 g/mol - (12.011 g/mol + 3 * 15.999 g/mol)

molar mass of X ≈ 42.36 g/mol

Metal X is most likely Calcium that has a molar mass of 40 g/mol

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1. Eliminate Food Waste

Food waste in the US occurs mostly in stores and at home—either because it spoils on the store shelf or before we can eat it. According to an NRDC study, Americans throw away up to 40 percent of the food they buy. We can combat food waste by shopping for what you need, eating leftovers, composting scraps, and donating excess to food banks. You can find a local food bank at FeedingAmerica.org. Project Drawdown estimates that curbing food waste could avoid a whopping 70.5 gigatons of CO2—that’s a bigger impact than restoring 435 million acres of tropical forest.

2. Eat Plant-Based

Transitioning to a vegetarian diet can cut your carbon footprint in half, and going vegan, even lower. Even shifting from high to low meat consumption can shrink your footprint by a third, according to a University of Oxford study. If half of the world’s population reduced meat consumption and avoided the associated deforestation caused by agriculture, we could reduce carbon emissions by 66 gigatons.

3. Use Clean Energy

Renewable energy is fundamental to powering the world as we move away from fossil fuels. Modeled after World War II “war bonds,” Clean Energy Victory Bonds—a bill introduced to Congress by Sen. Udall (D-NM), Reps. Lofgren (D-CA), and Reps. Matsui (D-CA)—would offer Treasury bonds as low as $25 to finance the government’s clean energy programs. Ask your representatives to support this bill to make Clean Energy Victory Bonds a reality. Additionally, you can purchase renewable energy from installers such as Blue Pacific Solar and RGS Energy, as well as plug into renewable utilities with Clean Choice Energy and Arcadia Power, which don’t require you to install any new hardware in your home to get sun- and wind-power.

4. Participate in the Democratic Process

Climate change has implications on local, national, and global levels. While the average person isn’t responsible for governing a nation, we are responsible for deciding who does. Vote for a climate activist, support comprehensive climate policies, and use your citizen voice to contact legislators when you disagree. The results of upcoming elections will determine how Americans and their elected leaders grapple with catastrophic climate change.

5. Divest

The largest source of greenhouse gas emissions come from fossil fuels. Divesting means taking your money out of institutions that fund fossil fuel expansion, which could eventually dry up funding to those projects. So far, the fossil fuel divestment movement has removed $9.94 trillion dollars from fossil fuel companies because of institutional divestments and $5.2 billion thanks to 58,000 individual divestments. You can build a fossil-free portfolio with our nationwide network of socially-responsible investing financial advisors which you can find on GreenPages.org and by encouraging your faith organization or alma mater to divest.

6. Improve Insulation

One of the most cost-effective and accessible tactics to combating the climate crisis is better insulation. Older homes can lose up to 35 percent of heat through their walls. Modern insulation reduces the energy needed to heat a home, therefore reducing emissions and saving you money. If even half of existing buildings installed thicker insulation, 8.3 gigatons of emissions could be avoided—that’s more than overhauling efficiency for the entire international shipping industry.

8. Rethink Transportation

Overhauling the world’s transportation systems, both commercial and personal, would save as much CO2 as one billion acres of regenerative agriculture. Commercial trucks alone account for six percent of the world’s emissions—more than the collective emissions of airplanes around the globe. While individuals can’t revolutionize the shipping, flight, and automobile industries overnight, we can demand they change by voting with our dollars for public transit, using electric or hybrid vehicles, and reducing our total trips taken.  

9. Recycle

Acquiring virgin resources—from logging trees to mining minerals—exploits more resources than recycling existing materials. For example, recycled aluminum products use 95 percent less energy than creating new ones. About 50 percent of recycled materials come from households; if that number were to increase to 65 percent, at-home recycling could prevent 2.8 gigatons of carbon emissions. However, recycling wrong can slow the system and create more waste, so be sure to rinse out your recyclables and stay up to date on local regulations to make sure what you recycle isn’t causing contamination.

The balanced equation of the redox reaction is given as follows:

The balanced equation of the reaction is determined using the half-reaction method.

The given equation of the redox reaction is:

H₆TeO₆ + Br₂ ----> TeO₂ + BrO₃⁻

Reduction half-reaction:

H₆TeO₆ → TeO₂

The oxidation state of Te changes from +6 to +4, showing that it has lost gained electrons.

H₆TeO₆ → TeO₂ + 2e⁻

Oxidation half-reaction:

Br₂ → BrO₃⁻

The oxidation state of Br changes from 0 to +5, showing that it has lost five electrons.

Balancing the electrons transferred and the atoms by adding electrons, H₂O, and H⁺ to the appropriate sides:

Br₂ + 6 H₂O → 2 BrO₃⁻ + 12 H⁺ + 10 e⁻

The number of electrons transferred in both half-reactions balanced is  by multiplying the oxidation half-reaction by 5 and the reduction half-reaction by 2:

5 (H₆TeO₆ → TeO₂ + 2 e⁻) → 5 H₆TeO₆ → 5 TeO₂ + 10 e⁻

2 * (Br₂ + 6H₂O → 2 BrO₃⁻ + 12 H⁺ + 10e⁻) → 2 Br₂ + 12 H₂O → 4 BrO₃⁻ + 24 H⁺ + 20 e⁻

The two half-reactions are added together and the electrons are canceled out to obtain the balanced redox reaction:

5 H₆TeO₆ + 2 Br₂ + 12 H₂O → 5 TeO₂ + 4 BrO₃⁻ + 24 H⁺

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The correct answer is d) 17, because the halogens lie on the left side of the noble gases.

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Rough ER is connected to the nuclear membrane and is responsible for the synthesis and processing of proteins.

The rough endoplasmic reticulum (ER) is a network of membrane-bound sacs and tubules that is studded with ribosomes on its surface. These ribosomes are responsible for protein synthesis. The rough ER is connected to the nuclear membrane because it receives instructions for protein synthesis from the DNA in the nucleus. This connection allows for the efficient transfer of genetic information from the nucleus to the rough ER.

Once the ribosomes on the rough ER synthesize proteins, the rough ER is also involved in the processing and modification of these proteins. It helps in folding the newly synthesized proteins into their functional three-dimensional shapes and also adds various modifications such as glycosylation (the addition of sugar molecules) or signal sequences that target the proteins to specific locations within or outside the cell.

After processing, the proteins may be transported to other parts of the cell or exported to the cell membrane or extracellular space. The connection between the rough ER and the nuclear membrane ensures a coordinated flow of genetic information and protein synthesis, allowing the cell to efficiently carry out its functions.

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The reaction is given by

\(\\ \rm\Rrightarrow {}^{127}_{56}Ba\longrightarrow {}^{0}_{+1}\beta+{}^{127}_{55}Cs\)

Barium goes underneath beta decay to form Ceaseum

\(\sf {}^{127}_{56}Ba\longrightarrow {}^0_{1}\beta+{}^{127}_{55}Cs\)

Remember

Answer:

The water

Explanation:

Step 1 - Discover the relation between moles and volume

The gas state equation states that:

Since the exercise says that both pressure and temperature will remain the same ("under the same conditions"), and R is already a constant, we can obtain a direct relation between moles and volume:

Since R, T and P will not vary, the quocient in parenthesis is a constant. Therefore, the volume will be directly proportional to the number of moles of gas.

Step 2 - using the relation to solve the problem

Since, as we saw, volume and moles are directly proportional to each other, we can set the following proportion to discover the new volume:

So, the volume of 0.27 moles of N2 gas, under the same conditions, will be 3.19 L.

Answer:

1.00 M

Explanation:

Sn^2+ reacts with KMNO4 as follows;

5Sn^2+(aq) + 2MnO4^-(aq) + 16H^+(aq) ----> 5Sn^4+(aq) + 2Mn^+(aq) + 8H2O(l)

The number of moles of MnO4^- reacted = 42.1/1000 L × 0.145 mol/L

= 0.0061 moles

If 5 moles of Sn^2+ reacts with 2 moles of MnO4^-

x moles of Sn^2+ reacts with 0.0061 moles of MnO4^-

x= 5 × 0.0061/2

x= 0.015 moles

Since the volume of the Sn^2+ solution is 15.00mL or 0.015 L

number of moles = concentration × volume

Concentration = number of moles/volume

Concentration= 0.015 moles/0.015 L

Concentration = 1 M

0.50 L of a 1.5 m solution contains 71.4 grams of MgCl2.

The equation moles of solute = molarity x volume (in liters) can be used.

When converting to grams, we may use the molar mass of the MgCl2 to determine how many moles there are in the solution.

MgCl2 has a molar mass of roughly 95.21 g/mol.

The volume must first be changed from liters to milliliters:

0.50 L = 500 mL

Next, we may determine how many moles of MgCl2 are present in the solution:

moles of MgCl2 = molarity x volume (in liters)

moles of MgCl2 = 1.5 mol/L x 0.50 L

moles of MgCl2 = 0.75 moles

Finally, we can figure out how much MgCl2 is present in the solution:

mass of MgCl2 = moles of MgCl2 x molar mass

mass of MgCl2 = 0.75 moles x 95.21 g/mol

mass of MgCl2 = 71.4 grams

Therefore, 0.50 L of a 1.5 m solution contains 71.4 grams of MgCl2.

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The equation for the equilibrium constant (K) of the reaction studied in this exercise can be written as follows: K = ([\(CI_20\), 2-] * [\(H_20\)(1)]) / ([\(C0_4^ 2\)-] * [Ht])

In this equation, the concentrations of the species involved in the reaction are represented by the square brackets [ ]. The subscripts indicate the stoichiometric coefficients of each species in the balanced chemical equation.

The reaction being studied involves the following species:

\(C0_4^ 2\)- (ag) + 2Ht (ag) = \(CI_20\), 2- (ag) + \(H_20\)(1)

In the equilibrium constant expression, the concentration of \(CI_20\), 2- is multiplied by the concentration of \(H_20\)(1) and divided by the product of the concentrations of \(C0_4^ 2\)- and Ht. The stoichiometric coefficients in the balanced equation are used as exponents for the concentrations of the respective species.

It is important to note that the concentrations used in the equilibrium constant expression should be in molar units (mol/L) or expressed as partial pressures for gases.

Additionally, the equilibrium constant is specific to a given temperature, and its value provides information about the relative amounts of reactants and products at equilibrium.

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Explanation:

to find the number of moles for tetracycline you use the formula,

number of moles=mass/molar mass

the mass is given in the question which is 71.9g and the molar mass is 444.43(you find I by adding the number of atoms for each element in the compound,12×22+1×24+14×2+16×8)

n=71.9g/444.43

=0.16g/mol

I hope this helps

Answer:sunny days

Explanation:meow

Answer:

This is condensation.

Explanation:

The process of water vapour turning back into liquid water.

2 moles N

2 moles H

3 moles O

Given

The compound is probably NH₂NO₃

Required

The number of moles

Solution

there are 2 N in  NH₂NO₃, so moles N = 2moles

there are 2 H in  NH₂NO₃, so moles H = 2moles

there are 3 O in  NH₂NO₃, so moles O = 3 moles

Answer:

N=2 moles

H=4 moles

O=3 moles

Explanation: just did it on edg

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\(a. \: Ca + Cl _{2} → CaCl _{2} \\

\\ b. \: Cl _{2}+H _{2} O+ NaOH → \\ NaCl+ H _{2}O \\ \\

c. \: \: \: H _{2} SO _{4} +CaCO _{3} → \\ CaSO _{4} +H _{2}O+CO _{2} \\ \\

d. \: \: Fe+Cu(NO _{3}) _{2} → \\ Fe(NO _{3} ) _{2}+Cu\)

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Answer:

100 joules​

Explanation:

The mechanical energy (M.E) of an object describes the objects ability to do work. The mechanical energy encompasses the object's energy due to its position (potential energy) and its energy due to motion (kinetic energy).

Therefore,

M.E = K.E + P.E

According to this question, potential energy (P.E) of the roller coaster is 50J and the kinetic energy (K.E) is also 50J. Hence, the mechanical energy (M.E) is

M.E = 50J + 50J

M.E = 100J

If the P.E and K.E of a roller coaster is 50 Joules respectively, the mechanical energy of the roller coaster is 100 Joules.

Given the following data:

To find the mechanical energy of the roller coaster:

The mechanical energy of a physical object or body is the total sum of the potential energy (P.E) and kinetic energy (K.E) possessed by an object.

Mathematically, mechanical energy is given by the formula;

Substituting the given parameters into the formula, we have;

\(M.E = 50 + 50\)

Mechanical energy (M.E) = 100 Joules.

Therefore, the mechanical energy of the roller coaster is 100 Joules.

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Precision relates to the consistency and reproducibility of measurements, while accuracy reflects how close measurements are to the true value.

Precision and accuracy are two important concepts in the context of errors in measurements. While they both pertain to the quality of data, they refer to different aspects.

Precision refers to the degree of consistency or reproducibility in a series of measurements. It reflects the scatter or spread of data points around the average value. If the measurements have low scatter and are tightly clustered, they are considered precise. On the other hand, if the measurements have a high scatter and are widely dispersed, they are considered imprecise.

Accuracy, on the other hand, refers to the closeness of measurements to the true or target value. It represents how well the measured values align with the actual value. Accuracy is achieved when measurements have a small systematic or constant error, which is the difference between the average measured value and the true value.

Errors in measurements can be classified into two types: random errors and systematic errors.

Random errors are associated with the inherent limitations of measurement instruments or fluctuations in the measurement process. They lead to imprecise data and affect the precision of measurements. Random errors can be reduced by repeating measurements and calculating the average to minimize the effect of individual errors.

Systematic errors, on the other hand, are caused by consistent biases or inaccuracies in the measurement process. They affect the accuracy of measurements and lead to a deviation from the true value. Systematic errors can arise from factors such as instrumental calibration issues, environmental conditions, or experimental techniques. These errors need to be identified and minimized to improve the accuracy of measurements.

In summary, precision refers to the degree of consistency or reproducibility of measurements, while accuracy refers to the closeness of measurements to the true value. Random errors affect precision, while systematic errors affect accuracy. To ensure high-quality measurements, both precision and accuracy need to be considered and appropriate techniques should be employed to minimize errors.

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Answer:

27.3 g HCl

Explanation:

**Be sure to arrange the conversion in a way that allows for the cancellation of units.

(Step 1)

Convert milliliters (mL) to liters (L).

1,000 mL = 1 L

 250 mL                1 L
---------------  x  -----------------  =  0.25 L
                         1,000 mL

(Step 2)

Use the molarity ratio to find the moles of HCl.

Molarity = moles / L

3 M = moles / 0.25 L

0.75 = moles

(Step 3)

Convert moles to grams using the molar mass of HCl.

Molar Mass (HCl): 1.008 g/mol + 35.453 g/mol

Molar Mass (HCl): 36.461 g/mol

0.75 moles HCl             36.461 g
--------------------------  x  --------------------  =  27.3 g HCl
                                         1 mole

The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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Answer:

1. Galvanic oxidation. Example is the corrosion of aluminium wires when in contact with copper wires under wet conditions.

2. Rainwater or Damp/moist air

3. Chromium-plated steel screws or stainless steel screws or galvanized steel screws

Explanation:

1. Galvanic oxidation or corrosion occurs when two different metals with different electrode potentials are brought into contact with each other by means of an electrolyte (usually a aqueous solution), such that a redox reaction occurs leading to one metal with the more negative electrode potential (the anode) becoming oxidized, while the other less negative potential (the cathode) is reduced.

In order for galvanic corrosion to occur, three elements are required.

i. Two metals with different corrosion potentials (anode and cathode)

ii. Direct metal-to-metal electrical contact

iii. A conductive electrolyte solution (e.g. water) must connect the two metals on a regular basis.

For example oxidation (corrosion) of aluminium wires when in contact with copper wire under wet conditions.

2. The most likely electrolyte will be rainwater containing dissoved solutes (if the panel is in an exposed part of the house) or damp/moist air.

3. From the table, the most likely screw will be chromium-plated steel screws or stainless steel (made of iron and nickel) screws or galvanized steel (zinc-plated) screws.

All these possible screw components have a more negative electrode potential than copper. Thus they will serve as the anode in a galvanic oxidation with copper.

Answer:

child stage.

Explanation:

they are more vubnlerabke at that stage

a). the nuclear masses of nitrogen-14 is 14.11154 amu

b). the nuclear masses of titanium-48 is 48.38523 amu

c). the nuclear masses of xenon-129 is 130.042455 amu

Define nuclear mass.

The formula for calculating nuclear mass is M=ZM (p)+(A-Z)M (n), where M (p) and M (n) refer to the mass of protons and neutrons, respectively. Nuclear mass is the total mass of all the nucleons represented inside the nucleus.

a). Given, atomic mass of 7N14= 13.999234 amu

We, know

Mass of proton= 1.00727 amu

Mass of neutron= 1.008665 amu

A nucleus contains only neutron and proton. N14 nucleus contains 7 protons and 7 neutrons that is 14 nucleons.

Therefore, the total mass of protons and neutrons= nuclear mass

= (7*1.00727 amu) + (7*1.008665 amu)= 14.11154 amu

b). Given, atomic mass of 22Ti48= 47.935878 amu

We, know

Mass of proton= 1.00727 amu

Mass of neutron= 1.008665 amu

A nucleus contains only neutron and proton. N48 nucleus contains 22 protons and (48-22) =26 neutrons that is 48 nucleons.

Therefore, the total mass of protons and neutrons= nuclear mass

= (22*1.00727 amu) + (26*1.008665 amu)= 48.38523 amu

c). Given, atomic mass of 54Xe129= 128.904779 amu

We, know

Mass of proton= 1.00727 amu

Mass of neutron= 1.008665 amu

A nucleus contains only neutron and proton. N48 nucleus contains 54 protons and (129-54) =75 neutrons that is 129 nucleons.

Therefore, the total mass of protons and neutrons= nuclear mass

= (54*1.00727 amu) + (75*1.008665 amu)= 130.042455 amu

Therefore, a). the nuclear masses of nitrogen-14 is 14.11154 amu

b). the nuclear masses of titanium-48 is 48.38523 amu

c). the nuclear masses of xenon-129 is 130.042455 amu.

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The following objects will exert the greatest gravitational force on a box⇒ 8 kg mass

Gravity is a force that arises because of the attraction between objects with mass.  

The magnitude of this attraction is proportional to the mass of the object.  

The greater the mass of the object, the greater the gravitational force  

Relationships can both be stated in  

Newton's Gravity Law:  

\(\rm F=G.\dfrac{m_1.m_2}{r^2}\)

with F = gravitational force,  

G = gravitational constant,  

m1, m2 = mass of object,  

r = distance between two objects.  

The distance-r and mass of the box(m₁) are the same, then the largest object's mass (m₂)exerts a large gravitational force, because the gravitational force is directly proportional to the mass of the two objects

In an experiment involving plants, the independent variable is the amount of fertilizer and the dependent variable is the plant's height.

explanation

What is an independent variable?

The independent variable is a variable that researchers manipulate to observe its effect on a dependent variable. Researchers are interested in how the independent variable affects the dependent variable.

What is a dependent variable?

The dependent variable is a variable that is being measured to determine the effect of the independent variable. It is the outcome variable that changes as a result of the manipulation of the independent variable.

What is a controlled variable?

A controlled variable is a variable that is kept constant or consistent throughout an experiment.

The purpose of controlling variables is to isolate the effect of the independent variable on the dependent variable.

Prior to 1982, penny dates' history

Years            weight (Mass)

\(1793-95\)       \($13.48 \mathrm{gm}$\)

\($1795-1857$\)   \($10.89 \mathrm{gm}$\)

\($1856-1864$\)   \($4.67 \mathrm{gm}$\)

\($1864-1942$\)   \($3 \cdot 11 \mathrm{gm}$\)

\(1943$\\\)               \($2.72 \mathrm{gm}$\)

\($1944-46 \quad\)       \(3.11 \mathrm{gm}$\)

\($1947-62$\)          \($3 \cdot 11 \mathrm{gm}\)

\($1962-82 \quad\)       \(3.11 \mathrm{gm}$\)

How many pennies are post-1982 in number

Years                            weight (Mass)

\(1982 - present $\quad\)               \(2.5 \mathrm{gm}$\)

Then,

(C) Total no. of pennies =( No. g pennies duted before 1982)

+(No.g pernies duted after 1982) \($=(8+1)$\)

Total no. of Pennies =9

Over the past ten years, the cost of copper has more than doubled. Therefore, depending on the metal it contains, a penny made before 1982 is worth 2.2 cents. The U.S. Mint banned the melting down of pennies for financial gain in 2007.

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