how are the rates of mantle upwelling and mantle downwelling related to the conservation of mass in the earth system

Answer:

The Inner Core

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Answer:

Elements are arranged from left to right and top to bottom in order of  increasing atomic number. As, The modern periodic law tells that the Elements in the modern periodic table are arranged by increasing atomic numbers.

Answer:

See below ~

Explanation:

Properties used to arrange elements

The compounds that can dissociate in water from the options given below are;

Ba(NO3)2

CaSO4

Mg3(PO4)2

Dissociation of compound is the process by which compounds degraded into smaller unit which can also recombine to form larger one in another condition.

When ionic compounds dissociate in water, the water molecules separate the ionic crystal. This is because of the attraction between the positive and negative ions in the crystal.

Therefore, The following compounds dissociate in water.

Ba(NO3)2

CaSO4

Mg3(PO4)2

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The number of moles of  C6H18O3 that can be formed is 2 and 264grams of CO2 can be formed from C6H18O3.

Given the substance C6H18O3

Mass of C6H18O3 available (m) = 22.73decagrams = 227.3g

Molar mass of C6H18O3 (M) = 131.28g/mol

We know that number of moles is taken as = mass of substance/Molar mass of that substance

So, number if moles of C6H18O3 = 227.3/138.21 = 1.72

From the reaction: C6H18O3 + 9O2 → 6CO2 + 9H2O

We can see that for every 1 mole of C6H18O3 6 moles of CO2 is formed.

So the mass of CO2(carbon dioxide) used is calculated as:

mass = moles of CO2 x Molar mass of CO2

Molar mass of CO2 = 44g/mol

mass of CO2 = 6 x 44 = 264g

Hence the required mass of CO2 is 264g

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Standard temperature and pressure (STP) will refers to the nominal conditions in the atmosphere at sea level. These conditions are 0 degrees Celsius and 1 atmosphere (atm) of the pressure.

The standard temperature is used in STP is 0 degrees Celsius (273.15 Kelvin). The standard pressure is used in STP is 1 atmosphere (atm), which is equivalent to 101.325 kilopascals (kPa) or 760 millimeters of mercury (mmHg). At STP, the one mole of an ideal gas occupies a volume of 22.4 liters.

STP is often used in calculations involving gases, particularly in the fields of chemistry as well as physics. It provides a standard reference point for comparing and measuring the gas properties, and it is commonly used in the conversion of gas volumes as well as pressures.

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Answer:

4.8 x 10^1

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved t the right, exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Explanation:

The answer to the question is 2

The ylide needed to prepare 3-ethyl-3-heptene from 3-pentanone using a Wittig reaction is option B) Ph_₃P = CHCH₂CH₃.

The Wittig reaction is a method for the synthesis of alkenes from aldehydes or ketones using a phosphonium ylide. The ylide is a compound that has a negatively charged carbon atom bonded to a positively charged phosphorus atom. The ylide reacts with the carbonyl group of the aldehyde or ketone to form a new carbon-carbon double bond, resulting in the formation of an alkene.

In this case, the starting material is 3-pentanone, which has a carbonyl group at the third carbon atom. The ylide needed to prepare 3-ethyl-3-heptene should have a carbon chain that can attach to the carbonyl group and form the desired product. Option B) Ph_₃P = CHCH₂CH₃ has the correct carbon chain to form 3-ethyl-3-heptene.

Therefore, the correct answer is option B) Ph_₃P = CHCH₂CH₃.

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After three half-lives, 12.5% of the original sample of polonium remains.

Polonium is a very infrequent natural element. It is found in uranium ores but it is careless to extract it. It is obtained by bombarding bismuth-209 with neutrons to give bismuth-210, which then purifies to form polonium. All the industrially produced polonium in the world is made in Russia.Po-210 is an effect of the radioactive decay of uranium-238, which decays to radon-222 and then to polonium. Polonium 210 has a half-life of 138 days. Let the opening value of polonium-218 be 100. First half-life. Therefore, 6.25 % of the original sample remains after 4 half-lives that are 12 minutes. Element Polonium has atomic Number 84, p-block, Mass number is 209.

So we can conclude that polonium is a radioactive, silvery-gray, or black metallic element of the oxygen group in the periodic table.

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Answer:

B

Explanation:

The reaction will occur naturally

Answer:

B. A pE x

Explanation:

Trust

We can calculate the molarity by dividing the quantity of barium hydroxide in moles by the volume of the initial solution.

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Answer:

4 yards/second is the answer

Answer:

the answer is 4 yards per second

Explanation:

80 yards in 20 seconds

20+20+20+20=80

there are 4, 20s to make 80

in other words...

80÷4=20

Answer:  electrons

Explanation:

We can make a maximum of 30 ham and cheese sandwiches using the given ingredients, and the limiting reactant (ingredient) is ham, while the excess reactants (ingredients) are cheese and bread.

To make 30 ham and cheese sandwiches, you need 90 slices of ham, 30 pieces of cheese, and 36 slices of bread.

Since you have 30 slices of ham, 20 slices of cheese, and 3 loaves of bread with 12 slices each, you can make a maximum of 30 sandwiches.

The limiting reactant (ingredient) is ham, since you do not have enough slices to make any more sandwiches.

The excess reactants (ingredients) are cheese and bread, as you have more than enough of both for 30 sandwiches.

To solve this problem using dimensional analysis, first convert each given quantity into the same unit (slices).

We have 30 slices of ham, 20 slices of cheese, and 3 loaves of bread with 12 slices each, for a total of 36 slices of bread. To make 30 sandwiches, we need 90 slices of ham, 30 pieces of cheese, and 36 slices of bread.

Since we only have 30 slices of ham, this is the limiting reactant (ingredient), and the remaining ingredients are the excess reactants.

Therefore, we can make a maximum of 30 ham and cheese sandwiches using the given ingredients, and the limiting reactant (ingredient) is ham, while the excess reactants (ingredients) are cheese and bread.

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Answer:

i believe it is covalent

Explanation:

Answer:

There are 6.94x10⁶ C of the negative electric charge contained in the electrons of all the lithium atoms in the container.

Explanation:

We have 3 moles of electrons (e⁻) in 1 mol of Li, so the quantity of negative electric charge is:

\( \frac{3 moles \thinspace e^{-}}{1 mol Li}*24 moles Li*\frac{6.022 \cdot 10^{23} e^{-}}{1 mol \thinspace e^{-}}*\frac{1.60 \cdot 10^{-19} C}{1 e^{-}} = 6.94 \cdot 10^{6} C \)

Therefore, there are 6.94x10⁶ C of the negative electric charge contained in the electrons of all the lithium atoms in the container.

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This structure protects microbes from phagocytosis, is identified using copper chloride capsules.

What is copper chloride capsules?

Copper(II) chloride (CuCl2) is a chemical compound with the formula CuCl2. The anhydrous form is yellowish brown, but when exposed to moisture, it eventually transforms into a blue-green dihydrate.

Depending on concentration, temperature, and the presence of additional chloride ions, aqueous solutions generated from copper(II) chloride include a variety of copper(II) complexes.

Copper(II) chloride is found in nature as the anhydrous mineral tolbachite and dihydrate eriochalcite.

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Answer:

The answer is B

Explanation:

honestly do

: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

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Answer:

Explanation:

acceleration is inversely proportional to the mass of an object.

Newton's second law states that "the acceleration produced on a body is directly proportional to the resultant force anf inversely proportional to its mass".

1 and 4 are correct. Radon is a noble gas and a nonmetal.

Answer:

decompression melting

Explanation:

if not then flux melting

Answer:

.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂

Explanation:

The balanced reaction is:

SOCl₂ + H₂O ----> SO₂ + 2 HCl

By stoichiometry of the reaction they react and produce:

SOCl₂: 1 mole

H₂O: 1 mole

SO₂: 1 mole

HCl: 2 mole

Being:

S: 32 g/mole

O: 16 g/mole

Cl: 35.45 g/mole

H: 1 g/mole

the molar mass of the compounds participating in the reaction is:

SOCl₂: 32 g/mole + 16 g/mole + 2*35.45 g/mole= 118.9 g/mole

H₂O: 2*1 g/mole + 16 g/mole= 18 g/mole

SO₂: 32 g/mole + 2*16 g/mole= 64 g/mole

HCl: 1 g/mole + 35.45 g/mole= 36.45 g/mole

Then, by stoichiometry of the reaction, the following amounts of mass react and are produced:

SOCl₂: 1 mole* 118.9 g/mole= 118.9 g

H₂O: 1 mole* 18 g/mole= 18 g

SO₂: 1 mole* 64 g/mole= 64 g

HCl: 2 mole* 36.45 g/mole= 72.9 g

Then the following rule of three can be applied: if by stoichiometry of the reaction 118.9 grams of SOCl₂ produce 2 moles of HCl, 0.226 grams of SOCl₂ how many moles of HCl do they produce?

moles of HCl= 3.80*10⁻³

3.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂

A fuel cell is an electrochemical device that converts chemical energy from a fuel (such as hydrogen) and an oxidizing agent (such as oxygen) into electrical energy, water, and heat.

What is Fuel?

Fuel is a material that is burned or processed to release energy in the form of heat or to produce work. Common examples of fuel include coal, natural gas, gasoline, diesel, and wood. The energy contained within the fuel is released through a chemical reaction, usually with oxygen, to produce heat, light, or other forms of energy. Fuel is used to power a wide range of machinery and devices, including vehicles, power plants, and heating systems.

The reactants (fuel and oxidizing agent) are supplied to the cell, where they undergo a chemical reaction in the presence of a catalyst, producing electricity and the byproduct water.

According to the law of conservation of mass, mass cannot be created or destroyed in a chemical reaction. In the case of a fuel cell, the mass of the reactants (fuel and oxidizing agent) is equal to the mass of the products (water) plus the mass of the electricity produced

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\(\huge \bf༆ Answer ༄\)

The Correct choice is ~ A

Isotopes are the elements with same Atomic Number but different masses ~

Answer:

C. reverse fault

Explanation:

Most tsunamis are formed by subduction zones that cause earthquakes from the movement of one tectonic plate over the other, below the ocean, promoting the movement of overlapping water. The friction between the plates causes an extensive accumulation of energy that increases to the point of extrapolating the limit between the two plates. In this process, when the initiation of a tsunami through a stick-slip subduction zone is similar to the movement experienced by a reverse failure.

Answer:

Incandescence is the emission of light caused by high temperature. ... Metals, such as aluminum, magnesium, and titanium, burn very brightly and are useful for increasing the temperature of the firework. Luminescence the emission of light by a substance that has not been heated.

Explanation:

The word incandescence refer to the light produce from heat. When solution is heated it will rise up the light scale through infrared, red and the rest of the color. Fireworks is create by controlling the amount of heat which keep it in one color.

Fireworks are a class of low explosive pyrotechnic device used for aesthetics and entertainment purpose.

They are commonly used in displays, combining a large number of devices in an outdoor setting.

With increase in sound level it can lead to restlessness, temporary or permanent hearing loss, high blood pressure and sleep disturbance.

Fireworks can also cause respiratory problems such as chronic or allergic bronchitis, asthma etc.

Fireworks release a fine cloud of smoke and particulate matter affecting local area quality.

Thus, the word incandescence refer to the light produce from heat. Fireworks is create by controlling the amount of heat which keep it in one color.

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The sum of all coefficients = 7

Given

The word equation

Required

The sum of all coefficients

Solution

The chemical equation can be expressed in terms of:

Convert the word equation into a chemical equation(skeleton) :

Ga + Cl₂ → GaCl₃

Balanced equation

2Ga + 3Cl₂ → 2GaCl₃

The sum of all coefficients :

= 2+3+2

= 7

Explanation:

1 L = 1/1000 Kl

1000 L = 1 Kl

Answer:

1 KL

Explanation:

1 KL =1,000 L