Please help!!! I will give five stars and points for correct answer with an explanation.
What do the blue and red lines indicate?
A cold front is moving to the north and west before a warm front moves through.
A cold front is moving to the south and east before a warm front moves through.
A warm front is moving to the north and east before a cold front moves through.
A warm front is moving to the south and west before a cold front moves through.
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The pressure of \(N_2\) under the given conditions is 8.53 atm

We may use the Ideal Gas Law equation to calculate the pressure of \(N_2\)under the following conditions:

PV = nRT

where P denotes pressure, V denotes volume, n is the number of moles of gas, R denotes the gas constant, and T denotes temperature in Kelvin.

To begin, we must convert the mass of \(N_2\) to moles. We may use the molar mass of \(N_2\) (28.02 g/mol):

49.1 g \(N_2\) x (1 mol N2/28.02 g \(N_2\) ) = 1.75 mol \(N_2\)

The temperature must then be converted from Celsius to Kelvin:

16.6°C + 273.15 = 289.75 K

Plugging the data into the equation :

P = nRT/V

P = (1.75 mol)(0.0821 mol/molK)(289.75 K)/ (5.80 L)

P = 8.53 atm

Therefore, the pressure of \(N_2\) is 8.53 atm

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Answer:

carbon dioxide

Explanation:

Water vapor and clouds are the major contributors to Earth's greenhouse effect, but a new atmosphere-ocean climate modeling study shows that the planet's temperature ultimately depends on the atmospheric level of carbon dioxide.

Answer:

FoOllow me please :)) hope it helps you

Staysafe!

Explanation:

Water vapor and clouds are the major contributors to Earth's greenhouse effect, but a new atmosphere-ocean climate modeling study shows that the planet's temperature ultimately depends on the atmospheric level of carbon dioxide.

(A) \(2Al(s) + 3O2(g) -- > Al2O3(s)\),  (B) \(Ca + SO4 -- > CaSO4\),

(C) \(2Mg + Br2 -- > 2MgBr2\) are reactions that occur that would form \(Al2O3\), \(CaSO4\), and \(MgBr2\) as resultant ionic compounds.

Al2O3 is obtained as the empirical formula if we combine two Al3+ ions and three O2- ions, using subscripts to show the number of each ion in the formula. An ionic compound is aluminum oxide. It has two aluminum atoms for every three oxygen atoms, according to this definition. It is a result of the reaction between oxygen and aluminum. Calcium ion and sulphate ion combine to generate the chemical known as calcium sulphate. Sulfate and calcium ions each have two positive charges (Ca2+) and two negative charges (SO42), and they combine to create the neutral molecule CaSO4. Bromine and magnesium are combined to form magnesium bromide. Magnesium bromide has the chemical formula MgBr2.

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Answer:

C3H7O + O2 → CO2 + H2O

Explanation:

a) The full symbol equation for the oxidation reaction of an isomer of C3H7O can be represented as:

C3H7O + O2 → CO2 + H2O

b) The proper reagent for this oxidation reaction is O2 (oxygen gas). The catalyst required for this reaction depends on the specific conditions. Common catalysts used for oxidation reactions include transition metals such as platinum (Pt), palladium (Pd), or copper (Cu).

c) There is no need to remove the product (CO2 and H2O) from the reaction vessel because they are typically in the gas or liquid phase and do not significantly interfere with the reaction. The product gases can be easily vented out of the vessel, while the liquid water can be left in the reaction mixture. Additionally, the product CO2 is a stable and inert gas, which does not pose any hazards in most cases. Therefore, it is often not necessary to remove the products after the reaction is complete.

The heat capacity for the metals are;

Aluminum -  0.89

Copper - 0.11

Iron - 0.44

Lead - 0.12

The specific heat of a substance is denoted by the symbol "C" and is typically measured in units of J/g·°C (joules per gram per degree Celsius) or cal/g·°C (calories per gram per degree Celsius).

The specific h

We have that;

For Aluminum;

c = 4.184 * 39.85 * 4.7/11.98 * 72.9

= 783.6/873.3

= 0.89

For Copper;

c =  4.184 * 12.14 * 1.9/12.14 * 75.4

= 96.5/915.3

= 0.11

For Iron

c =  4.184 * 40.24 * 2.4/12.31 * 75.1

= 404.1/924.5

= 0.44

For Lead

c = 4.184 * 39.65 * 0.7/12.46 * 76.7

c = 116.1/955.68

= 0.12

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Explanation:

Silver halides are ionic crystals consisting of a regular cubic lattice of Ag and halide ions together with a small proportion of defects, such as Ag ions that have been displaced from their regular lattice position to another “interstitial” position (the Ag ions are much smaller than the halide ions), and the corresponding vacancy in the lattice.

The application of silver halides in darkening effect in industry can be seen in the production of photographic film.

This compound is usually formed when Silver reacts with an halogen under special conditions.

In photography, it is used in the production of photographic film which darkens to produce an image when exposed to light due to the effect of the compound.

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There are 6 atoms of oxygen on the reactant side of the following equation: 2Fe2O3 + 3C → 4Fe + 3CO2. Details about atoms can be found below.

The number of atoms of an element in a balanced equation is the amount of that element involved in the reaction.

According to this question, Iron oxide reacts with carbon to produce iron and carbon dioxide as follows:

2Fe2O3 + 3C → 4Fe + 3CO2

In this reaction, 2 × 3 atoms = 6 atoms of oxygen are present on the reactant side of the equation.

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Answer:

Heat flows from the coffee to the spoon through conduction

Explanation:I did the lab assignment

Answer:

Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. As the spoon is in direct contact with hot mug of coffee the heat will transfer to spoon this represent the process of conduction.

Answer: Its A nucleic acids

Explanation:

Nucleic acids, and DNA in particular, are key macromolecules for the continuity of life. DNA bears the hereditary information that's passed on from parents to children, providing instructions for how (and when) to make the many proteins needed to build and maintain functioning cells, tissues, and organisms.

Nucleic acids carry genetic information from parents to their children.

Nucleic acids are biopolymers, macromolecules, essential to all known forms of life.[1] They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). If the sugar is ribose, the polymer is RNA; if the sugar is the ribose derivative deoxyribose, the polymer is DNA.

Nucleic acids are naturally occurring chemical compounds that serve as the primary information-carrying molecules in cells and make up the genetic material. Nucleic acids are found in abundance in all living things, where they create, encode, and then store information of every living cell of every life-form on Earth. In turn, they function to transmit and express that information inside and outside the cell nucleus to the interior operations of the cell and ultimately to the next generation of each living organism. The encoded information is contained and conveyed via the nucleic acid sequence, which provides the 'ladder-step' ordering of nucleotides within the molecules of RNA and DNA. They play an especially important role in directing protein synthesis.

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Tthe initial temperature of the polystyrene sample is 39.4°C.

Given: Mass of polystyrene sample = 54.2 gSpecific heat of polystyrene = 1.880 J-g°CWater mass = 100.0 g Initial water temperature = 21.0°CWater final temperature = 34.3°CPressure remains constant at 1 atmFormula used:Heat gained by water = heat lost by polystyreneHence,Heat lost by polystyrene = Heat gained by water=> mcΔT = mcΔTwhere,m = mass of polystyrene or waterc = specific heat capacityΔT = change in temperatureThe temperature change is ΔT = 34.3°C - 21.0°C = 13.3°CNow we can use this temperature change to calculate the initial temperature of the polystyrene.Taking the water's specific heat capacity, c = 4.184 J/g°CHeat gained by water = (100.0 g)(4.184 J/g°C)(13.3°C) = 5574 JHeat lost by polystyrene = 5574 JTaking the polystyrene's specific heat capacity, c = 1.880 J/g° ) = 13.3°C Now let's calculate the mass of polystyrene using the specific heat capacity formula.5574 J = (54.2 g)(1.880 J/g°C)(13.3°C - Ti)Ti = 39.4°C

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Answer:Deciduouse forest

Explanation:desert is too hot for snow, The rain forest always rains, Savannas are always warmer in climate.

Answer:

A

Explanation:

1. Water begins to boil - Endothermic

2. Fireworks explode - Exothermic

3. Sweat evaporates cooling your skin - Endothermic

4. Water begins to freeze into ice - Exothermic

5. You ignite your homework assignments once the year is over - Exothermic

6.Sunrays burn your skin - Exothermic

7.Cellular respiration - Exothermic

Exothermic and endothermic refer to two types of chemical reactions or physical processes that release or absorb energy, respectively.

Exothermic reactions release energy in the form of heat, light, or sound. When these reactions occur, they produce a net release of energy into the surroundings, which can often be felt as an increase in temperature. Examples of exothermic reactions include combustion, oxidation, and many types of explosions.

Endothermic reactions, on the other hand, absorb energy from the surroundings in order to proceed. These reactions typically feel cold to the touch and require energy to be added to the system in order to occur. Examples of endothermic reactions include melting, evaporation, and many types of chemical reactions that require heat to be added in order to proceed.

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The balanced redox equation for the given reaction in acidic solution is:

\(3NO + 3Cu^2+ + 2e^- - > 3NO_3^- + 3Cu^+.\)

To balance the redox reaction:

\(NO + Cu^2+ - > NO_3^- + Cu^+\)

First, let's assign oxidation states to each element/ion in the equation:

Oxidation state of N in NO: +2

Oxidation state of N in \(NO_3^-: +5\)

Oxidation state of Cu in \(Cu^2+: +2\)

Oxidation state of Cu in \(Cu^+: +1\)

From the given oxidation states, we can see that N is being oxidized from +2 to +5, and Cu is being reduced from +2 to +1. We need to balance both the charge and the number of atoms on each side of the equation.

Balancing the nitrogen:

We need three NO molecules on the reactant side to balance the nitrogen atoms on the product side. Thus, the equation becomes:

\(3NO + Cu^2+ - > NO_3^- + Cu^+\)

Balancing the charge:

The charge on the reactant side is 0 (since NO is neutral), while on the product side, we have 1- charge from NO_3^- and 1+ charge from Cu^+. To balance the charges, we need two electrons on the reactant side.

Final balanced equation:

\(3NO + 3Cu^2+ + 2e^- - > 3NO_3^- + 3Cu^+\)

In acidic solution, we need to balance the hydrogen ions \((H^+)\). In this case, there are no hydrogen ions on either side of the equation, so no additional steps are needed.

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The molecular formula tell you about the numbers of each kind of atom that are combined together and it helps in naming of ionic compounds.

Ionic compounds are formed when ions with opposing negative and positive charges form ionic bonds and form compounds, which are compounds made of ions. The molecular formula tell you about the numbers of each kind of atom that are combined together

Ionic compounds are named by stating the cation first, followed by the anion. When a neutral atom loses one or more electrons, it acquires a positive charge and is called a cation and when an atom gains one or more electrons, it becomes an anion and acquires a negative charge.

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Answer:

Before we can sketch the Lewis structures of molecules, we must first understand the octet rule. The octet rule asserts that when atoms combine to create compounds, electrons are gained, lost, or shared among them, resulting in a stable electron configuration defined by eight valence electrons as a result. These rules are used in conjunction with the main-group components of the second period.

Explanation:

Hope it helps:)

if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard temperature and pressure. Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe.

Nitrogen is an essential element for life as it is a major component of proteins and nucleic acids (DNA and RNA). It is also a component of many important compounds such as ammonia, nitric acid, and nitrogen oxide. Nitrogen is obtained from the air by a process called fractional distillation or by reacting ammonia with water.

In industry, nitrogen is used in the production of fertilizers, food packaging, and electronics. It is also used to create a controlled atmosphere for welding and in the manufacture of semiconductors.

Although nitrogen is not toxic, it can be dangerous if it displaces oxygen in confined spaces, leading to asphyxiation. Nitrogen gas can also react explosively with other chemicals under certain conditions.

Overall, nitrogen is a crucial element for life and industry with many useful applications, but it must be handled with care and caution to prevent accidents.

The balanced chemical equation for the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia gas (NH3) is:

N2(g) + 3H2(g) → 2NH3(g)

This equation shows that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3.

To determine the mass of nitrogen that would remain if all the hydrogen were consumed, we need to calculate which reactant is limiting, i.e. which reactant would be completely consumed in the reaction.

First, we calculate the number of moles of nitrogen and hydrogen:

Number of moles of N2 = mass of N2 / molar mass of N2

= 13.0 g / 28.02 g/mol

= 0.464 mol

Number of moles of H2 = mass of H2 / molar mass of H2

= 2.00 g / 2.02 g/mol

= 0.992 mol

According to the balanced equation, the stoichiometric ratio of N2 to H2 is 1:3. Therefore, 0.464 mol of N2 requires 1.392 mol of H2 to react completely. Since we only have 0.992 mol of H2, this is the limiting reactant.

Using the stoichiometric ratio, we can calculate the amount of N2 that would react with 0.992 mol of H2:

Number of moles of N2 consumed = 0.992 mol H2 x (1 mol N2 / 3 mol H2)

= 0.331 mol N2

The amount of N2 remaining after the reaction is the initial amount minus the amount consumed:

Number of moles of N2 remaining = 0.464 mol - 0.331 mol

= 0.133 mol

Finally, we can calculate the mass of N2 remaining:

Mass of N2 remaining = number of moles of N2 remaining x molar mass of N2

= 0.133 mol x 28.02 g/mol

= 3.73 g

Therefore, if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

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A chemist determines that a substance is composed of 30.4% nitrogen by mass and 69.6% oxygen by mass. The molar mass of the compound is 230.5 g/mol, the molecular formula is NO₂.

We must compute the empirical formula in order to ascertain the compound's chemical composition.

If we have 100 grams of the compound.

This suggests we have:

30.4 g of nitrogen

69.6 g of oxygen

Now, we have to convert the mass of each element to moles.

The molar mass of nitrogen (N) = 14.01 g/mol

the molar mass of oxygen (O)  =  16.00 g/mol.

Number of moles of nitrogen (N):

2.17 mol

Number of moles of oxygen (O):

4.35 mol

The simplest whole-number ratio between the moles of nitrogen and oxygen must now be determined. To calculate the ratio, we divide both numbers by the smaller value.

Moles N / moles O = 2.17 mol / 2.17 mol = 1.00

Moles O / moles O = 4.35 mol / 2.17 mol = 2.00

The ratio is approximately N₁O₂.

We divide the subscripts by their greatest common divisor to obtain the simplest ratio, since we are looking for the empirical formula. The empirical formula is NO₂ since the greatest common divisor in this situation is 1.

The molecular formula of the compound is NO₂.

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Answer:

B?

Explanation:

From the given data, the name of the hydrated salt would be  \(CoCl_2.83H_2O\).

The formula of the hydrated salt can be determined using the empirical formula approach. That is, we will find the mole equivalent of the anhydrous salt and the water of hydration and then combine them into a single formula after dividing by the smallest mole.

First, we need to determine the mass of the anhydrous salt and the water of hydration.

Mass of crucible (x) = 12.090 g

Mass of hydrated salt + crucible (y) = 16.250 g

Thus, the mass of the hydrated salt can be determined by subtracting x from y.

Mass of hydrated salt = 16.250 - 12.090 = 4.16 g

Mass of hydrate + crucible after evaporating off the water (z) = 12.424 g

Mass of anhydrous salt = z - x

                                      = 12.424 - 12.090

                                      = 0.334 g

Mass of water = 4.16 - 0.334

                        = 3.826 g

Now, let's find the moles:

Molar mass of \(CoCl_2\) = 129.839 g/mol

Molar mass of water = 18.01 g/mol

Mole of \(CoCl_2\) = 0.334/129.839 = 0.00257 mol

Mole of water = 3.826/18.01 = 0.2124 mol

Dividing through by the smallest mole

\(CoCl_2\) =  0.00257 / 0.00257  = 1

water = 0.2124/ 0.00257 = 83

Thus, the formula of the hydrate would be \(CoCl_2.83H_2O\)

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Answer:

0.02 moles of O₂ will be leftover.

Explanation:

Answer:

Gas molecules move at different speed at a given temputure bc as temp increases they move faster

Explanation:

they move faster bc they gain kinetetic energy

The strict regulations established by USP Chapter <797> regarding hood-cleaning procedures indicate the critical importance of hood cleaning to patient health and safety.

The purpose of these guidelines is to ensure that compounding pharmacies maintain a clean and sterile environment when preparing medications, especially those that will be administered to patients. The guidelines specify the frequency of cleaning and the level of detail required to ensure that the hoods are free of contaminants, which could compromise the quality and efficacy of the compounded products.

Therefore, Failure to comply with these regulations could result in contamination of medications and subsequent harm to patients. Thus, it is crucial to adhere to these guidelines to maintain a safe and sterile environment for compounding medications.

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Answer:

i belive its molecule

Explanation:

Explanation:

when they bond with each other the resultant chemical structure is molecule. the familiar water molecule is h2o

Answer:

C

Explanation:

Metals are good conductors of heat

the field of science which would mostly research is chemistry.

Heat is added to ice at 0 °C. Explain why the temperature of the ice does not change. What does change?When heat is added to ice at 0°C, the temperature of the ice does not change. This happens because all the heat energy is used up in overcoming the intermolecular forces of attraction (hydrogen bonds) that exist between the water molecules in ice.

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Answer: The increase in solubility or the rate of dissolving process of a gaseous solute in a liquid solvent is due to following:

Explanation:

When agitation is increased then there will occur an increase in kinetic energy of the molecules of a substance. As a result, more number of collisions will take place due to which more amount of solute will dissolve into the solvent.

Similarly, increasing the temperature will further increase the kinetic energy of molecules. Hence, this will lead to more solubility of gaseous solute into the liquid solvent.

As solubility of a gas is directly proportional to the pressure of the gas above surface of the solution. So, an increase in solute's partial pressure over solvent will also lead to an increase in solubility of gaseous solute into liquid solvent.

When surface area of solute is increased then there will be more solute particles available for reaction. Hence, more collisions will take place. As a result, rate of reaction is more due to which there will be an increase in solubility.

Thus, we can conclude that the increase in solubility or the rate of dissolving process of a gaseous solute in a liquid solvent is due to following:

Percentage is a ration of part to a whole. In our case, in perfect conditions, yield is theoretical and thusly considered larger, a whole. While actual yield is less because of imperfect conditions. The percentage is,

\((12.33\cdot 100)/14.5\approx85.03\%\).

Hope this helps.

Answer: 85.03%

Explanation:

Percentage yield = (actual yield/ theoretical yield) x100

so: (12.33/ 14.50)x 100

= 85.0344827586