what is the average rate of the reaction over the first 580 seconds? 1.6 × 10−3 1.9 × 10−3 2.0 × 10−3 2.2 × 10−3

Answer:

I would say there would be 5-10% in a city, and maybe 10-20% in the country. It mainly varies depending on how big the city is, how many people/districts there are, and the size of the country, which makes it hard to give a certain percent of shops, as there may be small businesses included as well or new shops being built.

Hope this helps! This was pretty confusing for me as well so i hope the answer is alright (×﹏×)

Answer:

The answer is - C. Sweat, tears, skin, and mucus membranes.

Explanation:

Answer:

13

Explanation:

The mass number of an atom is the sum of the number of protons and neutrons.

27 = protons + 14

protons = 13

The number of protons is equal to the atomic number.

Answer: 41 or Niobium

Explanation: To get the number of Protons or Electrons given the number of Neutrons and Mass, you have to add the given numbers. This gives the number of Protons and Electrons which is the same number as the Atomic number. So, 14 Neutrons plus the mass of 27 is equal to 41, which gives the element Niobium

Answer:

Zirconium, Zr, 40

Explanation:

Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.

A. Friability is not a characteristic of hazardous waste according to the EPA.

The EPA has identified four characteristics of hazardous waste: toxicity, ignitability, corrosivity, and reactivity. Toxicity refers to the potential of a waste material to cause harm or death to living organisms, including humans and animals, through exposure. Ignitability refers to the potential of a waste material to catch fire and burn easily under certain conditions, such as when exposed to heat, sparks, or flames. Corrosivity refers to the potential of a waste material to corrode or dissolve metal containers, tanks, or other equipment, as well as to cause skin or eye damage upon contact. Reactivity refers to the potential of a waste material to react violently or explosively when exposed to other substances or conditions, such as water, air, or pressure. Friability, on the other hand, refers to the tendency of a material to crumble, break, or fall apart easily, especially when subjected to pressure or vibration. While friability may be a concern for certain materials, it is not considered a characteristic of hazardous waste by the EPA.

Learn more about toxicity here:

https://brainly.com/question/31293204

#SPJ11

When the element comes near an atom having seven valence electrons, no reaction will occur.

The name of the element is Neon.

The electron configuration of elements shows how the total number of electrons present in the atoms of the elements are arranged in the orbitals around the nucleus.

In other words, the electron configuration of elements indicates the total number of electrons on its neutral atom, and hence the atomic number of elements.

In this case, the electron configuration is \(1s^2 2s^2 2p^6\). The total number of electrons is 10. Hence, the atomic number of the element is 10. The element with atomic number 10 is Neon (Ne).

Neon represents one of the inert elements on the periodic table. They possess octet electron configuration and as such, are not reactive ordinarily. Thus, if an atom of neon comes near an atom with seven valence electrons, no reaction will occur.

More on electron configurations can be found here: https://brainly.com/question/14283892

#SPJ1

The option that describe if the weak base is stronger than the weak acid is option B which is the value of Ka<Kb.

A weak acid is an acid that donates hydrogen ions (H+) to a solution only partially. For example, acetic acid (CH3COOH) is a weak acid that partially ionizes in water to produce H+ and acetate ions (CH3COO-). The equilibrium constant for this reaction (known as the acid dissociation constant or Ka) is relatively small, indicating that the reaction proceeds to a limited extent.

Similarly, a weak base is a base that only partially accepts hydrogen ions (H+) from a solution. For example, ammonia (NH3) is a weak base that partially ionizes in water to produce hydroxide ions (OH-) and ammonium ions (NH4+). The equilibrium constant for this reaction (known as the base dissociation constant or Kb) is relatively small, indicating that the reaction proceeds to a limited extent.

In general, weak acids and bases are less reactive than strong acids and bases because they do not dissociate completely into ions. However, they are still important in many chemical and biological processes, such as the buffering of solutions and the regulation of pH in the

Learn more about weak acid base below.

https://brainly.com/question/31075294

#SPJ1

The correct abbreviation for each metric unit is:

Kilogram - kg, Milliliter - ml, Kilometer- Km, Meter- m, Millimeter - mm, Centimeter - cm, Gram - g,  Liter - L, and Milligram - mg.

The metric system can be described as a system of measurement that succeeded the decimalized system based on the meter.  Each of the fundamental dimensions can be expressed by a single base unit of measure.

For quantities derived from the base units of the system, units derived from the base units are used such as the square meter being the derived unit for the area, a quantity derived from length.

Metric units can be described as units based on the meter, gram, or second and decimal multiples or sub-multiples of these. The units of the International System of Units (SI). By extension, they involve units of electromagnetism from the CGS units and SI units systems.

Learn more about Metric units, here:
https://brainly.com/question/19483018

#SPJ1

Answer:

C is false

Explanation:

All matter is made up of elements, all elements are made up of atoms, and matter can be both living and nonliving.

Answer:

Gas - Steam

Solid - Rock

Liquid - Juice

Answer:

Solid: Ice

Liquid: Water

Gas: Steam or Water vapor

Explanation:

This is a common example to answer your question. Some other examples are:

-most metals(ex: iron, tin, copper, gold) These are solids

-milk, juice, hot chocalate, any soda drink These are liquids

-hydrogen, helium, carbon dioxide, oxygen These are gases

Hope this helps!

Answer:

heterogeneous : A mixture that consists of visibly different substances or phases.

homogeneous : A mixture that has the same uniform appearance and composition throughout its mass.

compound: A pure chemical substance consisting of two or more different chemical elements.

element: A substance consisting one type of atom.

A solution is a homogenous mixture of two or more pure substances whose composition can vary within certain limits. A solution generally consists of two components, they are called solute and solvent.

A solution is called the supersaturated one which contains more dissolved solute than required for preparing the saturated solution and it is generally prepared by heating the saturated solution, adding more solute and then cooling it gently.

A supersaturated solution is unstable. Adding a small amount of the solute, a seed crystal will cause excess solute to rapidly precipitate or crystallize.

To know more about supersaturated solution, visit;

https://brainly.com/question/16817894

#SPJ1

The answer closest to this value ΔG standard Gibbs free energy is B. -67.6 kJ mol–1, so the correct answer is:
B. –67.6 kJ mol–1

To determine the value of ΔG for the given reaction at 25 °C with the specified initial concentrations, we can use the equation:

ΔG = ΔGo + RT ln(Q)

where ΔG is the Gibbs free energy, ΔGo is the standard Gibbs free energy (-50.5 kJ mol–1), R is the gas constant (8.314 J mol–1 K–1), T is the temperature in Kelvin (25 °C + 273.15 = 298.15 K), and Q is the reaction quotient.

First, we'll calculate Q:
Q = ([B][C])/([A]²) = (0.010 * 0.010)/(0.100²) = 0.01/0.01 = 1

Now, we can plug the values into the ΔG equation:
ΔG = -50.5 kJ mol–1 + (8.314 J mol–1 K–1 * 298.15 K * ln(1))

Since ln(1) = 0, the equation becomes:
ΔG = -50.5 kJ mol–1

The answer closest to this value is B. -67.6 kJ mol–1, so the correct answer is:

B. –67.6 kJ mol–1

For more information on standard Gibbs free energy visit:

brainly.com/question/30654218

#SPJ11

Explanation:

Z is the atomic number, which tells you the number of protons in the element and also its identity. A is the mass number, which tells you the number of protons plus the number of neutrons. X is the chemical symbol of the element, and it must correspond to the atomic number.

There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore, A is 64, Z is 28 and X is Ni.

Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle.

The balanced equation for the beta decay of ⁶⁴₂₉Cu.

⁶⁴₂₉Cu \(\rightarrow\)   ₂₈⁶⁴Ni     +   ⁰₋₁e

The atomic number, Z, refers to the number of protons inside the element as well as its identity. A refers to the mass number, that signifies the number is protons plus neutrons. The element's chemical symbol is X.

Therefore, A is 64, Z is 28 and X is Ni.

To know more about nuclear decay, here:

https://brainly.com/question/21114779

#SPJ1

Answer: The stage of metamorphosis this occurs is called the PUPA stage. The correct option is D.

Explanation:

Metamorphosis can be defined as the change in form, mode of life and behaviour that occurs during embryonic development of an organism. In the metamorphosis of insects, which mostly reproduce sexually, insects can be grouped according to the way the eggs develop into adults. Some show:

--> Complete metamorphosis or

--> Incomplete metamorphosis.

In the life cycle of a butterfly, a COMPLETE metamorphosis occurs. This is because after fertilization, the EGG hatches into LARVA which passes through a PUPAL stage before becoming transformed into an ADULT insect. That is:

Egg --> Larva --> Pupa --> Imago.

When the caterpillar, which is the Larva stage, has reached its full size, it spins a pad of silk on a twig. It moves upward and attached it's clasper to this pad. It spin another silk thread at the thorax. These aids it to assume a slanting position with the head end pointing upwards. The pupa stage called the CHRYSALIS is reached when it tucks it's head under its thorax, arches it's body, shortens and broadens, and moults for the last time. Therefore the correct option is D (pupa).

Answer:

The answer is D. Pupa

Answer:

Islands are formed by volcanic eruptions and tectonic plates movements.

Explanation:

Islands are land masses that are covered with water on all its sides. Islands are mainly formed by the volcanic eruptions or by the tectonic forces. When volcanoes erupt, they try to build up layers of the lava that eventually emerged through the water surface and forms an island.

Islands can be also formed when tectonic plates forces each other beneath the water body and land masses rise up to form islands.

Yes islands can be formed at any time. But it takes time for the formation of an island.

Islands are more likely to occur on the seas, oceans, lakes or river, etc.

Answer:

There are 400 meters in a hectometer?

Explanation:

Answer:

there are 400 meters in a hectometer?

Explanation:

Answer:

Ver explicación abajo

Explanation:

LA pregunta esta incompleta, pero logré conseguir un ejercicio muy parecido a este con datos similares, y la pregunta que falta como tal son estas:

"a) La cantidad de sal producida.

b)  Moléculas de hidrógeno obtenidas a 25 ºC y 740 mm Hg.

c)  El volumen de la disolución de ácido necesario para la reacción."

Asumiendo que estos son los datos faltantes, hay que ver como resolver por parte:

a) Cantidad de sal producida.

En este caso debemos plantear la reacción que se lleva a cabo. Es un mineral que tiene Zinc y reacciona con acido sulfurico, por tanto la reacción que se lleva a cabo en teoría es:

Zn + H₂SO₄ -----------> ZnSO₄ + H₂

Entonces, queremos saber la cantidad de ZnSO₄ que se formó.

Para eso, debemos calcular primero cuantos gramos de zinc hay originalmente en la muestra, que son los que reaccionaron para formar esta sal, y luego los moles para que por medio de estequiometría, calculemos los moles de la sal.

Para la masa de Zinc, sabemos que el mineral contiene 65% de zinc o 0,65 entonces:

mZn = 0,65 * 500 = 325 g

Calculamos los moles usando la masa molecular de Zinc que es 65,37 g/mol:

moles = 325 / 65,37 = 4.97 moles

Ahora bien, como la reacción de arriba está bien balanceada, podemos asuimr por estequiometría que la relación Zn / ZnSO₄ es 1:1, asi que los moles de Zn serán los mismos de la sal por tanto:

moles Zn = moles ZnSO₄ = 4,97 moles

Calculando la masa molecular de ZnSO₄:

MM ZnSO₄ = 65,37 + 32 + (16 * 4) = 161,37 g/mol

Finalmente la masa de la sal es:

m ZnSO₄ = 4,97 * 161,37

b) Moléculas de hidrógeno obtenidas

PAra este caso, ya tenemos los moles de Zn, y por estequiometría, todas las especies presentes están en relación 1:1, así que los moles de hidrógeno son los mismos de zinc. No es necesario el dato de temperatura y presión acá pues ya tenemos los moles.

Para conocer el número de moléculas, necesitamos el número de abogadro que es 6.02x10²³ por lo tanto las moléculas de hidrógeno:

Moléculas de hidrógeno = 6,02x10²³ * 4,97

c) Volúmen de ácido empleado

Finalmente para el ácido, como ya conocemos los moles empleados, podemos calcular la masa del ácido usando su peso molecular:

MM H₂SO₄ = (2*1) + 32 + (4*16) = 98 g/mol

m H₂SO₄ = 4,97 * 98 = 487,06 g

Ahora que ya sabemos su masa, solo calculamos la masa realmente usada (pues su %p/p es 96%) y con la densidad calculamos el volumen:

d = m/v

v = m/d

m H₂SO₄ (puro) = 487,96 * 0,96 = 467,58 g

El volumen será:

V = 467,58 g / 1,823

Espero que esto te sirva, o te ayude como impulso a tu ejercicio real.

Answer:

Hydrogen

Explanation:

Given that the formula for lysergic acid is C6H6N,O2. The percent composition of carbon in the acid is 71.62%.

Given that the formula for lysergic acid is C6H6N,O2.To calculate the percent composition of carbon in the acid, we need to find the molar mass of carbon and the molar mass of lysergic acid.We know that the molar mass of carbon is 12.01g/molMolar mass of Lysergic Acid = (6 x molar mass of carbon) + (6 x molar mass of hydrogen) + (1 x molar mass of nitrogen) + (2 x molar mass of oxygen)Molar mass of Lysergic Acid = (6 x 12.01 g/mol) + (6 x 1.01 g/mol) + (1 x 14.01 g/mol) + (2 x 16.00 g/mol)Molar mass of Lysergic Acid = 268.3 g/molNow, we can calculate the percent composition of carbon in lysergic acid.

Percent Composition of Carbon in lysergic acid = (Number of Carbon atoms x Molar mass of Carbon atoms) / (Total Molar mass of lysergic acid)Percent Composition of Carbon in lysergic acid = (6 x 12.01 g/mol) / 268.3 g/molPercent Composition of Carbon in lysergic acid = 0.267Percent Composition of Carbon in lysergic acid = 26.7 %So, the percent composition of carbon in the acid is 71.62%.

To know more about lysergic acid visit:

https://brainly.com/question/7139742

#SPJ11

The equilibrium constant for the reaction is determined by using the equation ΔG° = -RT ln(K) and the given ΔG° value of -34.5 kJ.

The equilibrium constant can be calculated by using the equation ΔG° = -RT ln(K), where ΔG° is the standard Gibbs free energy change, R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant. By rearranging the equation, we can solve for K.

To determine the equilibrium constant, substitute the given ΔG° value (-34.5 kJ) into the equation and calculate K using the known values of R (gas constant) and T (temperature in Kelvin).

Learn more about equilibrium

brainly.com/question/30694482

#SPJ11

9.20 liters is not correct as it is twice the volume of CO2 given and does not match the mole ratio of the balanced equation. The correct option is D.

As per the question given,  

The balanced chemical equation is:

Na2O2 + CO2 → Na2CO3 + O2

From the equation, we can see that 1 mole of CO2 produces 1 mole of O2. Therefore, we need to convert the given volume of CO2 (4.60 L) to moles, and then use the mole ratio to calculate the volume of O2 produced.

At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 L.

So, the number of moles of CO2 present is:

n = V/22.4 = 4.60 L/22.4 L/mol = 0.2054 mol

According to the balanced equation, 1 mole of CO2 produces 1 mole of O2. Therefore, the number of moles of O2 produced is also 0.2054 mol.

The volume of O2 at STP is:

V = n x 22.4 L/mol = 0.2054 mol x 22.4 L/mol = 4.60 L

Therefore, the volume of O2 gas produced from 4.60 liters of CO2 is also 4.60 liters.

Answer: The correct option is d. 9.20 liters is not correct as it is twice the volume of CO2 given and does not match the mole ratio of the balanced equation.

For such more questions on Mole ratio

https://brainly.com/question/30632038

#SPJ4

The limiting reactant is potassium aluminum sulfate.

To determine the limiting reactant, we need to compare the amount of each reactant to the stoichiometry of the balanced chemical equation. The balanced equation for the reaction between ammonium hydroxide (NH4OH) and potassium aluminum sulfate (KAl(SO4)2) is:

2 NH4OH + KAl(SO4)2 -> Al(OH)3 + (NH4)2SO4 + K2SO4

From the equation, we can see that the stoichiometric ratio between ammonium hydroxide and potassium aluminum sulfate is 2:1. Therefore, we need twice as many moles of ammonium hydroxide as potassium aluminum sulfate.

To calculate the moles of each reactant, we use the formula:

moles = concentration (M) × volume (L)

For the ammonium hydroxide:

moles of NH4OH = 3.0 M × 0.100 L = 0.300 mol

For the potassium aluminum sulfate:

moles of KAl(SO4)2 = mass (g) / molar mass (g/mol)

moles of KAl(SO4)2 = 30.0 g / (39.1 g/mol + 26.98 g/mol + 2(32.1 g/mol) + 4(16.0 g/mol)) = 0.083 mol

Since the stoichiometric ratio is 2:1, the moles of ammonium hydroxide are in excess.

To determine the theoretical yield of aluminum hydroxide (Al(OH)3), we need to convert the moles of the limiting reactant (potassium aluminum sulfate) to moles of the product using the stoichiometry of the balanced equation. From the balanced equation, we can see that the stoichiometric ratio between potassium aluminum sulfate and aluminum hydroxide is 1:1.The moles of aluminum hydroxide produced will be the same as the moles of potassium aluminum sulfate used, which is 0.083 mol.

To calculate the theoretical yield in grams, we use the formula:

mass = moles × molar mass

The molar mass of aluminum hydroxide (Al(OH)3) is (26.98 g/mol + 3(16.0 g/mol)) = 78.0 g/mol.

The theoretical yield of aluminum hydroxide is:

mass = 0.083 mol × 78.0 g/mol = 6.474 g

Therefore, the theoretical yield of aluminum hydroxide is 6.474 grams.

Aluminum hydroxide is a precipitate, which means it forms solid particles when the reaction occurs. It can be collected on a filter paper using a filtration process. Filtration is a common method to separate solids from liquids. The reaction mixture can be poured through a filter paper funnel, and the solid aluminum hydroxide particles will be trapped on the filter paper while the liquid and soluble salts (such as ammonium sulfate and potassium sulfate) pass through.However, it's important to note that the success of the filtration process depends on the particle size and the nature of the solid precipitate. If the particles of aluminum hydroxide are too fine or colloidal in nature, they may pass through the filter paper and affect the efficiency of the filtration. In such cases, additional techniques like centrifugation or using a finer filter may be required to achieve better separation.

Overall, collecting aluminum hydroxide on a filter paper is a feasible method in this scenario, provided the precipitate is of the appropriate size and nature for filtration.

for such more questions on reactant

https://brainly.com/question/26283409

#SPJ8

The balanced complete ionic equation of the above reaction is as follows: HI(aq) + KOH(aq) → H2O(l) + K+(aq) + I-(aq)

Part A: HI(aq)+KOH(aq)→H2O(l)+KI(aq)HI(aq)+KOH(aq)→H2O(l)+KI(aq)

The balanced complete ionic equation of the above reaction is as follows:

HI(aq) + KOH(aq) → H2O(l) + K+(aq) + I-(aq)

Part B: Expressing the above equation in the form of a net ionic equation, we get:

HI(aq) + OH-(aq) → H2O(l) + I-(aq)

The net ionic equation is obtained by removing the spectator ion (K+) from the complete ionic equation.

Part C: Na2SO4(aq)+CaI2(aq)→CaSO4(s)+2NaI(aq)

The balanced complete ionic equation of the above reaction is as follows: Na+(aq) + SO42-(aq) + Ca2+(aq) + 2I-(aq) → CaSO4(s) + 2Na+(aq) + 2I-(aq)

Part D: Expressing the above equation in the form of a net ionic equation, we get:

SO42-(aq) + Ca2+(aq) → CaSO4(s)

The net ionic equation is obtained by removing the spectator ion (Na+ and I-) from the complete ionic equation.

Part E: 2HClO4(aq)+Na2CO3(aq)→H2O(l)+CO2(g)+2NaClO4(aq)

The balanced complete ionic equation of the above reaction is as follows:

2H+(aq) + 2ClO4-(aq) + 2Na+(aq) + CO32-(aq) → 2Na+(aq) + 2ClO4-(aq) + H2O(l) + CO2(g)

Part F: Expressing the above equation in the form of a net ionic equation, we get:

H+(aq) + CO32-(aq) → H2O(l) + CO2(g)

The net ionic equation is obtained by removing the spectator ion (Na+ and ClO4-) from the complete ionic equation.

Part G: NH4Cl(aq)+NaOH(aq)→H2O(l)+NH3(g)+NaCl(aq)

The balanced complete ionic equation of the above reaction is as follows: NH4+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → H2O(l) + NH3(g) + Na+(aq) + Cl-(aq)

Part H: Expressing the above equation in the form of a net ionic equation, we get: NH4+(aq) + OH-(aq) → H2O(l) + NH3(g)

The net ionic equation is obtained by removing the spectator ion (Na+ and Cl-) from the complete ionic equation.

To know more about ionic equation visit: https://brainly.com/question/29299745

#SPJ11

In terms of particle separation, a pair of bonded particles are held together by a strong attractive force, which keeps the particles close to each other this force can be either a covalent bond.

A covalent bond, which involves the sharing of electrons between the particles, or an ionic bond, which involves the transfer of electrons from one particle to the other. In both cases, the bond forms because of the electrostatic attraction between positively and negatively charged particles.

On the other hand, a pair of un-bonded particles do not have a strong attractive force between them, and they are free to move independently of each other. The particles can be attracted to each other through weaker forces such as Van der Waals forces or dipole-dipole interactions, but these forces are much weaker than the chemical bonds that hold particles together.

The second and fourth plots represent a pair of un-bonded particles, which do not have a strong attractive force holding them together. These plots do not show a strong peak at a short separation distance, indicating that the particles are not held together by a chemical bond.

To learn more about Covalent bond:

https://brainly.com/question/19382448

#SPJ4

Answer:

170 mL

Explanation:

The total volume to be reported should be 170 mL.

According to the significant rule in mathematical operations, final answers are usually reported to reflect the accuracy of the least accurate number.

In this case, the least accurate of all the volumes has zero significant digits after the decimal, hence, the final answer after the mathematical operation should also have no significant digits after the decimal.

           18 + 128.7 + 23.45 = 170.15

Therefore, the total volume to be reported when significant digits are taken into account would be 170 mL.

Answer:

41 inches

Explanation:

There is 12 inches in 1 foot so times 12 and 3. Thats 36 so now do 36 + 5 that =41.

The statement "All of the following components are common to all ignition systems except: spark plugs, the ignition coil, a device for triggering the ignition coil, a distributor" is incorrect.

All of the components mentioned are common to many ignition systems.

The spark plugs are the parts that ignite the fuel and air mixture within the engine cylinders. The ignition coil is a component that transforms low voltage electrical power to high voltage electrical power that is needed to create the spark. The device for triggering the ignition coil is needed to provide a signal to the ignition coil at the correct time. A distributor is a component that is used to route the high voltage output of the ignition coil to the correct spark plug at the correct time in the engine cycle.

Therefore, all of these components are commonly found in many types of ignition systems.

Learn more about ignition systems.

https://brainly.com/question/14094081

#SPJ4

The statement "All of the following components are common to all ignition systems except: spark plugs, the ignition coil, a device for triggering the ignition coil, a distributor" is incorrect.

All of the components mentioned are common to many ignition systems.

The spark plugs are the parts that ignite the fuel and air mixture within the engine cylinders. The ignition coil is a component that transforms low voltage electrical power to high voltage electrical power that is needed to create the spark. The device for triggering the ignition coil is needed to provide a signal to the ignition coil at the correct time. A distributor is a component that is used to route the high voltage output of the ignition coil to the correct spark plug at the correct time in the engine cycle.

Therefore, all of these components are commonly found in many types of ignition systems.

Learn more about ignition systems.

brainly.com/question/14094081

#SPJ11

Answer:

D for answer

Explanation:

The air column determines the frequency of the sound produced, less air column produces increased frequency. Jar B has lesser air column above water and it will produce higher pitch.