Naphthalene is a chemical compound found in what common household item?.

To determine if the internal energy of a system increases or decreases, we usually analyze changes in its temperature, volume, or pressure. If the temperature rises, it signifies an increase in internal energy, and vice versa.

The diagram in question represents a decrease in the internal energy of the system. This is because the final state of the system is at a lower energy level than the initial state. In terms of the absence of work associated with the process, it is important to note that the change in internal energy of a system is determined by the heat added to or removed from the system. If there is no work involved in the process, then the heat transferred must be the only factor contributing to the change in internal energy. Therefore, if heat is added to the system, it is endothermic as the internal energy of the system increases, whereas if heat is removed from the system, it is exothermic as the internal energy of the system decreases.

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The two junco birds will have different beak pointiness since their proteins for beak pointiness are different so the proteins will connect to their beaks in different ways.

Birds' beaks consists of an outer shell of hard keratin which consists almost entirely of proteins which are very rich in glycine [about 30 residues per 100 residues (residues %)], contain mild levels of tyrosine and serine (each about 8 residues %), and which have usually low contents of cystine (about 2-5 residues %).

On the basis of the information provided in the question, it should be noted that the pointiness of the birds beak will be different as a result the difference of their proteins used for beak pointiness so the proteins will connect in various ways.

If we assume that the two junco birds have the same proteins in their cells for beak pointiness, they'll have the same beak pointiness.

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C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Answer:

60 dollars!

Explanation:

So, 12 oranges cost $36 dollars.

Now, we can solve this by finding the value for only one orange, then multiplying that by 20 to get our answer!

So, the value of one orange is $36 / 12 = $3. One orange is worth $3 dollars.

So, 20 oranges will be worth 20 * 3 = $60 dollars!

Answer:

3 you use elements instead of numbers and arrows instead of equal signs

actually it would be more like word problems you have 4 apples plus 3 oranges yields 7 apple orange things but it doesn't yield 7 of them it would be an equal ratio of moles of the fruits

4 the arrow is an equal sign

Explanation:

Answer:

metals tend to lose electrons to form positive ions because they have more protons than electrons.

Answer: Balanced forces

Explanation: Equal forces acting in opposite directions are called balanced forces. Balanced forces acting on an object will not change the object's motion.

1.52 tanks of gas will be used to drive 1600 km.

A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon).

A gallon is a unit of volume in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters).

1 mpg = 0.425143707 km/l; to convert miles per gallon to kilometers per liter .

mileage = 23.38 km/l

volume = 1600 km ÷ 23.38 km/l

volume = 68.43 liters; the amount of gasoline needed the trip

tanks = 68.43 l ÷ 45 l

tanks = 1.52

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Answer:

d

Explanation

all are compounds

Yes, as all of these compounds are covalent since they are not conductive. Therefore, the correct option is option D.

A chemical compound is a material made of several similar molecules (as well as molecular entities) joined by chemical bonds and comprising atoms from various chemical elements.

Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be shattered or new ones created during this process. Yes, as all of these compounds are covalent since they are not conductive.

Therefore, the correct option is option D.

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Chocolate is a food product made from roasted and ground cacao pods, that is available as a liquid, solid or paste, on its own or as a flavouring agent in other foods. The seeds of the cacao tree have an intense bitter taste and must be fermented to develop the flavour.

Chocolates are solid at ambient (20–25 °C) and melt at oral temperature (37 °C) during consumption giving a smooth suspension of particulate darkens in cocoa butter and milk fat (Beckett, 1999 and Whitefield, 2005).

After fermentation, the beans are cleaned, sorted, graded and then roasted. The bean shells become brittle and the colour of the beans darken. The process converts the flavour precursors within the bean into compounds such as aldehydes, esters, lactones, and pyrazine, which give chocolate its aroma and flavour.

Answer:

\(CH _{4}+ 2O _{2} → CO _{2} + 2H _{2}O\)

for the balanced equation

\(from \: the \: equation \\ 1 \: mole \: of \: methane \: gives \: 1 \: mole \: of \: carbon \: dioxide \\ 7.4 \: moles \: of \: carbon \: dioxide \: will \: be \: given \: by \: (7.4 \times 1)moles \: of \: methane \\ = 7.4\: moles \: of \: methane \\ \\ since \: moles \: of \: oxygen \: double \: those \: of \: methane \\ moles \: of \: oxygen \: = 7.4\times 2 \\ = 14.8 \: moles \: of \: oxygen\)

The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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Answer:

Reflection takes place from the polished smooth surfaces

Explanation:

A vacuum does not refer to an opaque body. An opaque body does not allow light to pass through it while a vacuum is simply empty space without air.

A smooth polished surface often acts as a mirror, it is a good reflector of light.

The moon is a non luminous body in the sky. It merely reflects the light from the sun.

A Pinhole camera can not take pictures of moving objects because it only focuses on any image placed before it.

Shadows are not inverted, the always appear upright.

The daughter nuclide from the beta decay of 210(top)/82(bottom)Pb is 210/83Bi. The correct answer is D) Bi.

To determine the identity of the daughter nuclide from the beta decay of 210(top)/82(bottom)Pb, we need to understand the process of beta decay and how it affects the atomic number and mass number of the parent nuclide.

In beta decay, a neutron in the nucleus is converted into a proton, and an electron (beta particle) and an antineutrino are emitted. This results in an increase in the atomic number by one while the mass number remains the same.

The parent nuclide is 210(top)/82(bottom)Pb, which means it has an atomic number of 82 and a mass number of 210.

During beta decay, a neutron in the nucleus is converted into a proton, so the resulting daughter nuclide will have an atomic number of 83. The mass number remains the same at 210.

Therefore, the correct answer is D) Bi. The daughter nuclide from the beta decay of 210(top)/82(bottom)Pb is 210/83Bi.

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B. To prepare 225.0 mL of 1.33 M HCl, measure 49.89 mL of the stock solution and dilute with water to 225 mL

C. The volume strontium hydroxide, Sr(OH)₂ required is 11.91 mL

B. How do I prepare 225.0 mL of 1.33 M HCl?

To prepare 225.0 mL of 1.33 M HCl, we must obtain the volume of the stock solution of HCl needed. This can be obtained as follow:

M₁V₁ = M₂V₂

6× V₁ = 1.33 × 225

6 × V₁ = 299.25

Divide both side by 6

V₁ = 299.25 / 6

V₁ = 49.89 mL

Thus, to prepare 225.0 mL of 1.33 M HCl, measure 49.89 mL of the stock solution of HCl, put it in a 225 mL volumetry flask and dilute with water to obtain the desired volume (i.e 225 mL)

C. How do I determine the volume of strontium hydroxide, Sr(OH)₂ required?

We'll begin by writing the balanced equation for the reaction

2HCl + Sr(OH)₂ —> SrCl₂ + 2H₂O

The volume of strontium hydroxide, Sr(OH)₂ can be obtained as follow:

MaVa / MbVb = nA / nB

(0.07942 × 75) / (0.25 × Vb) = 2

5.9565 / (0.25 × Vb) = 2

Cross multiply

2 × 0.25 × Vb = 5.9565

0.5 × Vb = 5.9565

Divide both side by 0.5

Vb = 5.9565 / 0.5

Vb = 11.91 mL

Thus, the volume of the strontium hydroxide, Sr(OH)₂ required is 11.91 mL

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Boyle’s law is supported by the following options - (a) product of pressure and volume is constant, (c) decrease in volume leads to increase in pressure, and (d) decrease in pressure leads to increase in volume.

Boyle's law, an experimental gas law, states that as a container's capacity rises, a gas's pressure tends to drop.

According to Boyle's law, in a closed system with constant temperature and gas volume, the absolute pressure a given mass of an ideal gas exerts is inversely proportional to the volume it occupies.

According to this, the volume of a gas is inversely proportional to the pressure it exerts at a given temperature. In other words, a gas will condense to fit into an enclosed area when it is poured into it, but the pressure it exerts on the container will rise.

Therefore, (a) the product of the pressure and volume of a gas is constant, (c) The pressure will increase with a decrease in the volume of the gas, and (d) the pressure decreases with an increase in the volume of the gas.

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Answer:

ionic

Explanation:

Answer:

a system of government by the whole population or all the eligible members of a state, typically through elected representatives.           its like everyone has a choiceExplanation:

Answer:

Demorcay  is:The form of government of the entire population or of all qualifying members of the state, generally by elected representatives:

Explanation:

A good description of bacterial reproduction is rapid reproduction through binary fission. That is option A.

Binary fission is defined as the type of asexual reproduction whereby an organism multiplies to form new organisms through the separation of the body into two new bodies.

The process of binary fission include the following:

Under ideal conditions some bacterial species may divide every 10–15 minutes—a doubling of the population at these time intervals.

Therefore, the good description of bacterial reproduction is rapid reproduction through binary fission.

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pCO2 is an important factor that affects various aspects of water chemistry and the impacts of ocean acidification. When pCO2 increases, the concentration of total CO2 dissolved in water also increases. This leads to changes in pH, which decreases due to increasing atmospheric CO2 concentration.

When pCO2 rises, the concentration of only CO2 dissolved in water increases. The dissolved CO2 forms carbonic acid, which contributes to the acidification of the ocean. This increase in CO2 affects the equilibrium between CO2, HCO3-, and CO3^2-, shifting it towards higher levels of dissolved CO2 and H+ ions, resulting in a lower pH.

In terms of the impacts of ocean acidification on different organisms, the effects can vary depending on their specific needs. An organism that requires CO2 is likely to fare better under ocean acidification since the increase in dissolved CO2 can provide them with a favorable environment. However, organisms that rely on HCO3- or CO3^2- may fare worse under ocean acidification, as the lower pH interferes with the availability of these carbonate ions, which are essential for shell formation and calcification in some marine organisms.

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Answer:

2HBr + Ba(OH)2 = BaBr2 + 2H20

The balanced chemical equation of hydrogen bromide and barium hydroxide is 2 HBr + Ba(OH)₂ = BaBr₂ + 2 H₂O.

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.

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The quantity of Radon (Rn) found in one ounce of the element = 28.35g

Radon (Rn) is defined as the element found in the periodic table with the atomic number of 86 and molecular atomic mass of 222g.

The molar mass of the element Radon (Rn) = 222g.

But 1 ounce= 28.35 grams

X ounce = 222gramms

Make X the subject of formula;

X ounce = 222/28.35

= 7.8 ounce.

That is to say that, 7.8 ounce of Radon= 222g,

28.35 grams of Radon = 1 ounce.

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Food  low in sodium and high in potassium among soy sauce, dill pickles, orange juice, and canned soup, the correct answer is orange juice.

Eating a varied diet helps to ensure that you receive all the nutrients necessary for a healthy diet

Variety involves eating different foods from all the food groups. Eating a varied diet helps to ensure that you receive all the nutrients necessary for a healthy diet. One of the major drawbacks of a monotonous diet is the risk of consuming too much of some nutrients and not enough of others.

Orange juice is food which is low in sodium and high in potassium, making it a suitable choice for those seeking such nutritional values.

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Answer:

Static Electricity

Explanation:

Answer:

static electricity

Explanation:

Yes, that's correct. The chemical formula "\(BaCl_2\)" represents the ratio of the elements in the compound barium chloride. In this case, it means there is one barium (Ba) atom and two chlorine (Cl) atoms in each representative unit of the compound.

What is the chemical formula?

The term chemical formula has to do with the way that the atoms that compose the substance are arranged. The arrangement of the atoms in the chemical substance would help us to have an idea of how the compound appears.

Now we are looking at the compound barium chloride of which we know that it is an ionic subsnace and since the substance is ionic in nature, we would talk about a formula unit of the compound as beings its representative unit in the crystal lattice of the substance.

The question above is incomplete, the complete question is:

The formula for barium chloride is BaCl2. The chemical formula for barium chloride shows the number of ___________ of each element in the ___________ representative unit of the substance.

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Answer:

Due to cis trans isomerism

Explanation:

Answer:

lets say your doing a frog

it jumps it speeds up and then slows down

Explanation:

The lowest concentration that will produce a flash of fire when an ignition source is present is referred to as the lower flammable limit (LFL). This is the minimum percentage or concentration of a substance in the air that is required for it to be flammable and sustain combustion. It represents the lower boundary below which the concentration of the substance is insufficient to support a fire or explosion.

The LFL is an important parameter to consider in safety assessments and hazard analyses, particularly in industries dealing with flammable substances. It indicates the level at which a substance becomes potentially hazardous, as concentrations below the LFL are generally considered too lean to ignite or sustain a fire.

Above the LFL, there is a range of concentrations in which the substance can form a flammable mixture with air, presenting an increased risk of fires or explosions in the presence of an ignition source.

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