What does a flame test tell you about the metal ions in the solution?

Answer:

37.04 or 37 cubic cm

Explanation:

Density = Mass/Volume

19.3=715/x

19.3x=715

715/19.3=37.04

The three minerals are especially susceptible to the oxidation biotite, pyrite, and the olivine.

The three minerals that are especially susceptible to the oxidation are the biotite, the pyrite, and the olivine. They are the most susceptible to oxidation because they have the high iron content. The ions that are released from the silicate minerals in weathering process are the sodium, potassium, the calcium, iron, and the magnesium ions.

The oxidant that is the oxidizing agent is which reduces itself by the taking electrons away from the another material. The oxidizing substance is also known to as the electron acceptor because it will accepts the electrons.

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Answer:

1. They are tightly bound, so they cannot vibrate and release radiation.

2. The molecule vibrates and releases infrared energy

3. No, this is incorrect because water vapor is a greenhouse gas and will increase the greenhouse effect.

4. The burning of fossil fuels causes both air pollution and water pollution

5. Chlorofluorocarbons

6. Sulfur dioxide and nitrous oxides

7. Initiating efforts to remove trash from oceans

8. nitrogen and phosphorus

9. an area in a waterway where no plants or animals live

10. Fewer microorganisms will grow on the surface of the lake

11. Using water and chemicals at high pressure to open up fissures to access oil and gas recourses

12. Climate change

13. The mines are operated adjacent to important waterways and are polluting them.

Explanation:

Answer:

#'s 1-13 above are correct here are tqo out of the three discussions

it won't let me submit #14-16

That oil sands executive is greedy and heartless and therefore can't be trusted when she claims is Ad hominem attack. So, Option B is correct.

4-  The argument in question 4 is an example of an ad hominem attack. This is due to the argument's focus on the character of the oil sands executuive rather than the actual problem, which is how to improve the company's environmental record.

The argument holds that the executive cannot be believed when she says she wants to improve the company's environmental record because she is avaricious and callous. This is an error in logic, though, as the executive's character may not necessarily be related to the company's environmental policies.

5-  The argument in question 5 is an example of an appeal to ignorance. This is because the argument states that there is no proof that humans are causing climate change, so it must be natural causes. Just because there is no conclusive proof that humans are causing climate change, it does not mean that they are not.

The argument assumes that just because there is no evidence to the contrary, the argument must be true. This is a logical fallacy.

So, Option B is correct.

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Answer:

the mass is 10

Explanation:

30 divided by 3

Answer: mass is 10

Explanation:

F=30N M=? A=3m/s^2

M= 30N / 3m/s^2

in other words 30 divided by 3

There are approximately 3.4 x 10²² atoms in a 0.056 g piece of aluminium.

Atoms are the fundamental units of matter that are made up of a nucleus containing protons and neutrons, as well as electrons that orbit the nucleus. Aluminium is a chemical element with the atomic symbol Al and atomic number 13, and it is a silvery-white metal that is extremely light and ductile. In one mole of aluminium, there are 6.022 x 10²³ atoms (Avogadro’s number).

We need to calculate the number of aluminium atoms in a 0.056 g piece of aluminium.

To calculate the number of atoms in a given amount of aluminium, we will use the formula:

n = N / NAv

where n is the number of moles of aluminium, N is the mass of aluminium, and NAv is Avogadro's number. 

NAv = 6.022 x 10²³ mol⁻¹

So, we get:

n = N / NAv = (0.056 g) / (26.98 g mol⁻¹) x (6.022 x 10²³ mol⁻¹) ≈ 3.4 x 10²² atoms.

Therefore, the answer is 3.4 x 10²² atoms.

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Answer:

3.05x10²³ (3 sig. fig.)

Explanation:

Propane (C₃H₈) is a colorless alkane gas with three carbons and eight hydrogen atoms. In 2.23 grams of propane, there are 3.05 x 10²³ carbon atoms present.

The number of atoms or the particles being the smallest units is estimated by the product of the number of moles and Avogadro's number.

The Avogadro's number (Na) is used to determine the number of particles that have been present in a mole of a substance. A mole of a substance is said to have 6.022 × 10²³ ions, atoms, electrons, molecules, etc.

Moles of propane are calculated as,

Moles = mass ÷ molar mass

= 2.23 ÷ 440.094

= 0.05057

Now, the number of particles is calculated as,

Number = moles × Avogadro's number

= 0.05057 × 6.022 × 10²³

= 3.05 x 10²³

Therefore, 3.05 x 10²³ carbon atoms are present in 2.23 grams of propane.

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Assuming all orbitals are in the same energy level, the orbital with the lowest energy is the s orbital.

In the context of the electronic structure of atoms, orbitals are grouped into different energy levels, with each energy level containing one or more sublevels. The energy levels are labeled using the principal quantum number (n), with higher values of n corresponding to higher energy levels.

Within a given energy level, the s orbital is always the orbital with the lowest energy. This is because the s orbital has a spherical shape and is located at the center of the atom. It is shielded from the nuclear charge by the other electrons in the atom, resulting in a lower energy compared to other orbitals within the same energy level.

The p orbitals, on the other hand, have slightly higher energy than the s orbital within the same energy level. The p orbitals are dum bbell-shaped and are oriented along the x, y, and z axes. They have a higher energy due to their orientation and their closer proximity to the nucleus.

Similarly, the d and f orbitals, which exist in higher energy levels, have even higher energies compared to the s and p orbitals within their respective energy levels.

Therefore, if all the orbitals are in the same energy level, the s orbital will have the lowest energy among them.

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7300 mg

7.3x10^-3 kilograms = 7300 milligrams

The right response is D. the length of one compression and rarefaction.

A wave's wavelength is the separation between two adjacent locations that are in phase with one another. It is the actual distance covered by a single wave cycle.

Hence, one compression and one rarefaction are identical in length to one wavelength.

In a longitudinal wave, the medium's particles vibrate perpendicular to the wave's direction of propagation. In the medium, this causes areas of compression and rarefaction. One wavelength is equal to the space between any two compressions or rarefactions that follow one another.

You can mark a spot on a medium and measure the distance between it and the following point that reaches the same phase of a longitudinal wave to determine its wavelength (either a compression or a rarefaction). To get a more precise measurement, you can then repeat this process numerous times and take an average.

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109.1 mL of 0.3850 M HCl is required to neutralize 60.00 mL of 0.7000 M KOH.

To calculate the volume of 0.3850 M HCl required to neutralize 60.00 mL of 0.7000 M KOH, the following is the solution:

First, calculate the amount of KOH that reacted with HCl using the following formula: Moles of KOH = Molarity x Volume = 0.7000 M x 60.00 mL = 0.04200 mol.

Now that the amount of KOH has been determined, it is time to determine how much HCl is needed. Since KOH and HCl react in a 1:1 ratio, the number of moles of HCl required is also 0.04200 mol.

Volume of HCl = Moles of HCl / Molarity. Hence, the volume of 0.3850 M HCl required to neutralize 60.00 mL of 0.7000 M KOH = 0.04200 mol / 0.3850 M = 109.1 mL.

Therefore, 109.1 mL of 0.3850 M HCl is required to neutralize 60.00 mL of 0.7000 M KOH.

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Explanation:

1) Complete combustion of propane gives carbon dioxide gas and water vapors.

The balanced chemical equation is given as:

\(C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)\)

Number of carbon atoms on reactant side = 3

Number of hydrogen atoms on reactant side = 8

Number of oxygen atoms on reactant side = 10

Number of carbon atoms on the product side = 3

Number of hydrogen atoms on the product side = 8

Number of oxygen atoms on the product side = 10

On both the sides numbers, all elements remained the same which indicates that matter remains conserved during the course of a chemical reaction.

2) Incomplete combustion of propane gives carbon dioxide gas, carbon monoxide gas, and water vapors.

The balanced chemical equation is given as:

\(2C_3H_8(g)+9O_2(g)\rightarrow 4CO_2(g)+2CO(g)+8H_2O(g)\)

Number of carbon atoms on reactant side = 6

Number of hydrogen atoms on reactant side = 16

Number of oxygen atoms on reactant side = 18

Number of carbon atoms on the product side = 6

Number of hydrogen atoms on the product side = 16

Number of oxygen atoms on the product side = 18

On both the sides numbers, all elements remained the same which indicates that matter remains conserved during the course of a chemical reaction.

Hypoxic areas, such as those found in the Gulf of Mexico, develop primarily due to option C: die-off from a large phytoplankton bloom uses up the oxygen in water. The correct option is C.

Phytoplankton blooms occur when there is an excessive growth of microscopic algae in the water, often caused by high nutrient levels, such as nitrogen and phosphorus.

These blooms can create dense layers of algae on the water surface. As the algae die and decompose, bacteria consume the organic matter and consume oxygen in the process, leading to a decrease in oxygen levels in the water.

This process is known as eutrophication, and it can deplete oxygen concentrations to a critical level, resulting in hypoxic conditions.

Oxygen levels below 5ppm (option A) can contribute to hypoxia, but the primary cause is the consumption of oxygen by the decomposition of organic matter from the phytoplankton bloom (option C).

Nitrate additions (option B) and the presence of methyl-mercury (option D) can have additional negative impacts on aquatic ecosystems, but they are not the main drivers of hypoxia in this context. The correct option is C.

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Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

Dissolved oxygen levels are 20% less concentration than fresh water.

Dead sea is also known as salt lake. It is  locked between Israel and Jordan in the south western Asia. Its western shore belongs to israel and eastern shore belongs to Jordan. It is the lowest body of the water on the surface of the earth.The lake was 1300 feet on the earth surface in mid 20th century. and in the mid of 2010  its level has reached about 430 meter below the sea level . Dead sea receives water from Jordan river so it has no tides in it.it flows from north in to the lake.The water in the dead sea is is extremely saline water.no life can sustain in this water.only bacteria can sustain in salt lake. Dissolved oxygen is the level of free oxygen present in the water .the levels of too high or too cold can harm the aquatic and affect water quality.

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Answer:

gravity's is why I can sit or jump and not fly into space and is why we have a atmosphere. basically gravity is why my daily life even exist.

Explanation:

Answer:

Gravity keeps us grounded. it helps us everyday just to stay on the ground. If we didnt have gravity we would just flout away.

Answer:

A) 0.1 M solution of HCl contains more H3O+ ions than OH- ions. This is because HCl is a strong acid that dissociates completely in water to form H3O+ and Cl- ions. The concentration of H3O+ ions in the solution will be equal to the concentration of HCl, which is 0.1 M. Since water also undergoes autoionization to form H3O+ and OH- ions, the concentration of OH- ions in the solution will be determined by the ion product constant for water (Kw), which is equal to [H3O+][OH-] = 1.0 x 10^-14 at 25°C. Since [H3O+] = 0.1 M, [OH-] = Kw / [H3O+] = 1.0 x 10^-14 / 0.1 = 1.0 x 10^-13 M. Therefore, the concentration of H3O+ ions is greater than the concentration of OH- ions in a 0.1 M solution of HCl, so the correct answer is B) More H3O+ ions than OH- ions.

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Answer:

i know im painfully late but the answer is "the saturation point of a solution is measured in moles."

Explanation:

The relationship between concentration and mole is the number of particles of solute in a solution measured in terms of moles. Therefore,  option (D) is correct.

The mole is used to calculate the quantity amount of any substance. Moles of any substance can be determined by dividing the mass of the substance by its molar mass. Mole is useful to determine how many solute particles are present in a given solution.

Moles and molar mass are related to each other, as the concentration of substances can be calculated by using the number of moles of the solute.

The concentration of a solution is a measurement of the amount of solute per unit volume of solution. In chemistry, concentration is most commonly expressed in terms of molarity, which is equal to moles per liter solution.

Therefore, the correct option is option D.

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Answer:

Your missing the entire Transitional Metal group as well as all the Lanthanides and Actinides.

Explanation:

The groups are:

Alkali metals.

Alkaline earth metals.

Transitional metals.

Crystallogens.

Pnictogens.

Chalcogens.

Halogens.

Noble gases.

Answer:

There is a lot of biodiversity in this seafloor.

Explanation:

Biodiversity is just the diversity in species and animals in a certain environment.

Water (2950 g) is heated until it just begins to boil. If the water absorbs 5.71x10^5 J of heat in the process, the initial temperature of the water is 25.79°C.

The average temperature of the contents of the coldest container to be processed at the time the thermal processing cycle begins is called as initial temperature.

The first thing to do here is to calculate the change in temperature that occurs when you provide 5.71x10^5 J of heat to 2950 g of water.

q = mcΔT

where,

q - the amount of heat gained

m- the mass of the sample

c- the specific heat of the substance

ΔT - the change in temperature, defined as the difference between the final temperature and the initial temperature

ΔT = q/mc

= 5.71x10^5/2950×4.18

= 25.79°C

Thus, the initial temperature of the water is 25.79°C.

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Given what we know about elements of the periodic table and their properties, we can confirm that the list with elements that have very similar properties is option B.

Therefore, we can confirm that since option B is the choice that lists all elements pertaining to the same group, in this case, the Alkaline-earth metals, it is the correct option as they will all have very similar properties.

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The work done by a thermodynamic system depends only on the initial and final states of the system.What is work?Work is the energy transferred to or from an object by an external force acting on that object. When a force acts upon an object and moves it, work is done on the object.

Work done is a scalar quantity, which means it only has magnitude and no direction.How does the work done by a thermodynamic system depend on the initial and final states of the system The work done by a thermodynamic system depends on the initial and final states of the system because the work done is directly proportional to the change in volume of the system.

Therefore, the work done by a thermodynamic system depends only on the initial and final states of the system.The energy change of a system depends only on the difference between the initial and final states, and not on the path taken to achieve it. This is also known as the First Law of Thermodynamics. It is represented mathematically as follows:ΔU = Q - Wwhere ΔU is the change in internal energy of the system, Q is the heat transferred to or from the system, and W is the work done on or by the system.

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Stirring allows hot liquid to reach the surface much faster than unassisted convection

Answer:

HCl is a stronger acid because the bond is weaker

Hf is a stronger acid because the bond is more polar

H2Se is a stronger acid because the bond is weaker.

Explanation:

Weaker and more polar acids make stronger acids.

a. When comparing HF and HCl, HCl is a stronger acid because the bond is stronger.
b. When comparing H2O and HF, HF is a stronger acid because the bond is weaker.
c. When comparing H2Se and H2S, H2Se is a stronger acid because the bond is weaker.

In comparing the acidity of acids, we can consider the strength of the bond between the hydrogen atom and the non-metallic atom in the acid. The weaker the bond, the more easily the hydrogen ion can be donated to a base, making the acid stronger.

a. This is because HCl has a weaker bond between hydrogen and chlorine, and it readily donates hydrogen ions to a base.
b. This is because HF has a stronger bond between hydrogen and fluorine, which makes it harder to donate hydrogen ions to a base.
c. This is because H2Se has a weaker bond between hydrogen and selenium, and it readily donates hydrogen ions to a base.

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The very active nonmetals fluorine, chlorine, bromine, iodine, and astatine are in the group called halogen.

Six elements make up Group 17 of the periodic table, and these are the halogen elements. The elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), with Tennessee (T) make up group 17, which is located in the second column from the right of the periodic table.

Halogens, or Group 17 on the periodic table, which include fluorine, are the most reactive nonmetals. This is due to the fact that each of their valence electron shells has one empty space.

Therefore, The very active nonmetals fluorine, chlorine, bromine, iodine, and astatine are in the group called halogen.

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Answer:

I and Ii it is the answer the correct one

Answer:

This is false.

Explanation:

This statement directly opposes the first law of thermodynamics which states that energy can neither be created nor destroyed, but can transfer from one source to another.