5)All BUT one action would increase the rate at which solid metal will react with a acid solution. That is
а
A) decrease the molarity of the acid.
B) break the metal into smaller pieces.
increase the temperature of the solution.
D) increase the concentration of the acid solution.

Answer:

an element

answer is an element

hope it helps

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Answer:

a full moon or new moon

Explanation:

Answer: let me see I gotta do the work first then I’ll give you the answers

Explanation:

Answer:

Explanation:

The Golgi apparatus receives proteins and lipids (fats) from the rough endoplasmic reticulum. It modifies some of them and sorts, concentrates and packs them into sealed droplets called vesicles.

Part of ecosystem | Contains energy storage molecules? (yes or no) | Energy storage molecules flowing in? (yes or no) | Energy storage molecules flowing out? (yes or no)

Producers | Yes | No | Yes

Consumers | Yes | Yes | Yes

Decomposers | Yes | Yes | Yes

Dead matter | Yes | Yes | Yes

Abiotic matter | No | No | No

In an ecosystem, different components play different roles in terms of energy storage and flow.

Producers, such as plants, have the ability to produce energy-rich molecules through photosynthesis, storing energy in the form of carbohydrates. They do not rely on external sources of energy storage molecules, but they release energy storage molecules into the ecosystem when consumed or when they undergo decomposition.

Consumers, including herbivores, carnivores, and omnivores, obtain energy storage molecules by consuming producers or other consumers. They receive energy-rich molecules flowing into their systems through their diet and release energy storage molecules when they respire or excrete waste.

Decomposers break down organic matter, including dead plants and animals, into simpler substances and release energy storage molecules in the process. They receive energy storage molecules flowing into their systems from the breakdown of organic matter and release energy storage molecules back into the ecosystem.

Dead matter, which refers to organic material that is no longer living, contains energy storage molecules. When dead matter decomposes, the stored energy is released into the ecosystem.

Abiotic matter, which includes non-living components like minerals and gases, does not contain energy storage molecules and does not participate in the flow of energy storage molecules within the ecosystem.

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Answer:

An ionic bond is that in which an electron is trasferred to another atom. Atoms  that are considered metals have a low electronegativity meaning they are less likely to gain any electrons. Atoms that are non-metals have a higher electronegativity and are more likey to gain electrons than lose electrons. When an electron is either lost or gained by another electron the atome becomes more stable. Atoms with a complete and balanced valence shell stay close together because of the Nucleus with its strong electromagnetic pull. The stronger the pull the more likely the atom will gain an electron. The weaker the pull the more likely it will lose an electron.

Explanation:

The chocolate or wax in the activity can be compared to the tectonic plates on the surface of the Earth. Just like the tectonic plates, the chocolate or wax is made up of different layers that move and interact with each other. The movement of the tectonic plates is driven by convection currents in the mantle, which is the layer of the Earth beneath the crust. These convection currents are caused by differences in density between the hot, less dense material near the core of the Earth and the cooler, more dense material near the surface. Similarly, the movement of the chocolate or wax is driven by the heat from the flame, which causes the less dense, melted chocolate or wax to rise and the more dense, solid chocolate or wax to sink.

Answer:

G - H2SO4

Explanation:

two hydrogen atoms and 4 oxygen atoms

The substance with chlorine in the lowest oxidation state is b. KCl, where chlorine has an oxidation state of -1.

The oxidation state of an element indicates the charge it would have in a compound or ion if electrons were completely transferred.

a. In Cl₂, each chlorine atom shares electrons equally, resulting in a neutral chlorine molecule. The oxidation state of each chlorine atom in Cl₂ is 0.

b. In KCl, potassium (K) is a Group 1 element with an oxidation state of +1. Chlorine (Cl) has an oxidation state of -1 to balance the charge. This is the lowest oxidation state of chlorine among the given options.

c. In KClO, potassium (K) has an oxidation state of +1, and oxygen (O) usually has an oxidation state of -2. We can assign chlorine (Cl) an oxidation state of +1 to balance the charges. Therefore, chlorine in KClO has an oxidation state of +1.

d. In KClO₄, potassium (K) has an oxidation state of +1, and oxygen (O) usually has an oxidation state of -2. To balance the charges, chlorine (Cl) must have an oxidation state of +7. Therefore, chlorine in KClO₄ has an oxidation state of +7.

Based on the given options, the substance with chlorine in the lowest oxidation state is b. KCl, where chlorine has an oxidation state of -1.

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The graph showing a person who is walking at the same rate with no change in speed or velocity is :

An electric heating unit that utilizes ductwork to distribute the heated air is classified as a "forced air heating system."

In this type of heating system, electric heating elements generate heat, which is then distributed throughout the building using a network of ducts.

The heated air is forced through the ductwork by a fan or blower, allowing it to reach various rooms or areas in the building.

Forced air heating systems are commonly used in residential and commercial buildings as they provide efficient and effective heating by quickly and evenly distributing warm air throughout the space.

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Answer:

C.

Explanation:

Answer:

1. Elements named after Countries or Places

Americium

Am

Made in 1945 at Chicago USA

Berkelium

Bk

Made in 1950 at the University of California, Berkeley, USA

Californium

Cf

Made in 1950 at the University of California, Berkeley, USA

Copper

Cu

The Romans were the biggest users of copper. Their source of copper was the island of Cyprus. Their name for the island was "Cyprium". They called the metal "Aes Cyprium" - metal of Cyprus. The name became shortened to Cyprium which then became "Cuprum" from which copper gains its modern day symbol.

Francium

Fr

Discovered in 1939 at the Curie Institute, Paris, France.

Gallium

Ga

Named after the Latin name for France - Gallia

Germanium

Ge

Discovered in 1886 by a German Chemist - Winkler.

Polonium

Po

Discovered in 1898 by Marie Curie, who was Polish.

Scandium

Sc

Discovered and mined in Scandinavia

Strontium

Sr

Named after Strontian, a small village in the Western Highlands of Scotland.

__________________________________________________________

4. Elements named after Planets

Helium

He

From the Greek word "Helios" - the Sun. In 1868 during an eclipse of the Sun, Scientists observed a spectral line caused by an unknown element. They named the element Helium. Twenty seven years later in 1895, the element was discovered on Earth.

Neptunium

Np

Named after the planet Neptune. Find the position of the three planets Neptune, Pluto, and Uranus in the Solar system. Now find the position in the Periodic Table of the three elements named after these planets...

Plutonium

Pu

Named after the planet Pluto

Uranium

U

Named after the planet Uranus. The element was discovered in 1789, shortly after the discovery of the planet.

Elements named from Mythology

Tantalum

Ta

Named after the Greek mythological king, Tantalus. It was discovered in 1802 and great difficulties were encountered in dissolving its oxide in acid to form salts. It proved to be a tantalizing problem!

Niobium

Nb

Named after Princess Niobe, the daughter of King Tantalus. According to legend, father and daughter were always found together and were very much alike. The two elements Niobium and Tantalum are usually found together in nature and their properties are very similar. Niobium was discovered in North America in 1801 and was originally named Columbium. It was renamed in 1844 after the connections with tantalum was realized. Find the positions of both elements in the periodic table

Thorium

Th

Named after Thor, the Scandinavian God of War and Thunder. It was discovered and named in 1828. Coincidentally, thorium is used today as a nuclear fuel in nuclear weapons and reactors.

Titanium

Ti

Named after Titans, the Greek supermen. Titanium is an extremely strong metal which resists attack by acids.

Vanadium

V

Named after Vandis, the Scandinavian Goddess of Beauty. The salts of vanadium have beautiful colors.

3. Elements named after Famous Scientists

Curium

Cm

Made in 1944 at Chicago. It was named in honor of Marie and Pierre Curie.

Einsteinium

Es

Made in 1952 at the University of California. It was named in honor of Albert Einstein.

Lawrencium

Lw

All of the man-made elements have been made as a result of the Nuclear Age. The majority of these elements were made at the University of California USA, in a machine called the Cyclotron. The Cyclotron was invented by Professor Ernest Lawrence. Lawrencium was made at the University of California in 1961 and named in his honor.

Mendelevium

Md

Made in 1955 at the University of California. It was named after a world famous Russian Chemist Dimitri Mendeleev.

------------------------------------

8. The chemical symbol for lead is Pb, which comes from the Latin word plumbum, meaning "waterworks," referring back to ancient times when the metal was widely used in the construction of water pipes.

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The concentration of the HF solution is  0.03.

We know that the concentration has to do with the amount of the substance that is present in the system. We know that what we have is an acid hence we can only talk about the concentration of the acid if we can obtain the amount of the hydrogen ion.

We know that the acid is defined as any substance in which there is the presence of the hydrogen ion is what we call and acid. Since the hydrogen fluoride does have the hydrogen, we can say that the substance that we are dealing with here is an acid.

Thus;

pH = 14 - pOH

pOH = hydroxide ion concentration

pH = hydrogen ion concentration

pH = 14 - 12.5

= 1.5

[HF]  = Antilog (-1.5)

= 0.03

The acid would have a concentration of  0.03.

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Answer:

true

...................

Answer:

I guess your answer would be A even thought it is not actually correct it is the closest to being correct.

Explanation:

The molar mass of Al2(SO4)3 is 342.15 g/mol. This means that 1 mole of Al2(SO4)3 has a mass of 342.15 g.To find the mass of sulfur in 2.0 moles of Al2(SO4)3, we first need to determine the number of moles of sulfur in 1 mole of Al2(SO4)3. There are 3 moles of sulfur in 1 mole of Al2(SO4)3, so there are 6 moles of sulfur in 2 moles of Al2(SO4)3.To find the mass of sulfur in 2.0 moles of Al2(SO4)3, we can use the following calculation:Mass of sulfur = (moles of sulfur) x (molar mass of sulfur)

Mass of sulfur = 6 mol x 32.06 g/mol

Mass of sulfur = 192.36 gTherefore, the mass of sulfur in 2.0 moles of Al2(SO4)3 is 192.36 grams.

Answer:

Angel Fish!

Explanation:

Answer:

Angel fish, the other person answered first tho.

Explanation:

Hydrocid and oxacid acids (formation, nomenclature, properties and application):

Formation: binary compounds formed by HYDROGEN and a NON-METAL (from groups 6A and 7A of the periodic table).

Properties: they are found naturally in a gaseous state. They are called hydrocids because when they dissolve in water and dissociate, they generate acidic solutions.

Applications : In the industry they are mostly used for organic synthesis and for the leather tanning industry.

Formula: HX, H is hydrogen and X is the chemical symbol for halogen.

Systematic: name of the acid + suffix -ide + hydrogen. Example: Hydrogen chloride → HCl

Traditional: acid + non-metal + suffix "-hydric". Example: Hydrogen telluric acid → H₂Te

Formation: Acid compounds formed by HYDROGEN, a NON-METAL and OXYGEN. They are obtained by reaction between an anhydride (acid oxide) and water . Hydrogen acts with oxidation number +1 and oxygen with -2.

Properties: They are ternary compounds (formed by three chemical elements), formed by a non-metallic chemical element, oxygen together with hydrogen.

Applications: In the industry it is used to obtain fertilizers for agriculture . As well as it is used for the synthesis of other acids, sulfates and in the petrochemical industry .

Nomenclature

Formula: HaXbOc, H is hydrogen, X is a non-metal element and O is oxygen

Stock : Acid + prefix indicating the number of oxygens + oxo + prefix for the number of non-metallic atoms + root of that atom ending in "-ico" + valence in Roman numerals (in brackets). Example: Dioxochloric acid (III) → HClO₂

Systematic : prefix that indicates the number of oxygens + oxo + prefix for the number of non-metallic atoms + root of that atom ending in "-ate" + valence in Roman numerals (in parentheses) + hydrogen. Example: Hydrogen tetraoxochlorate (VII) → HIO₄

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Translated Question: Prepare, in your notebook, a graphic organizer in which you synthesize the information obtained in the text. Provides information on the formation of hydroacid and oxacid acids, their nomenclature, their properties and their application in industry. help me

When a reaction is in equilibrium, and the product is removed, the equilibrium shifts to the right, towards the product.

Equilibrium is a stage, when there is no change in the mass and energy of the reaction.

When more reactant added in the equilibrium stage, the equilibrium shifts toward the left, and when product added the equilibrium shifts towards the right, product.

Thus, When a reaction is in equilibrium, and the product is removed, the equilibrium shifts to the right, towards the product.

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A LOAEL is defined as the lowest dose that demonstrates a significant increase in an observable adverse effect. The term LOAEL stands for "Lowest Observed Adverse Effect Level."

When testing chemicals and other substances for toxicity, the goal is to determine the concentration or dose at which adverse effects begin to appear. The LOAEL is the lowest dose at which an adverse effect is observed. This value can be used to establish a safe level of exposure to a substance.
To determine the LOAEL, a series of tests are conducted in which different doses of the substance being tested are administered to test animals. The animals are observed for any adverse effects, such as changes in behavior, weight loss, or organ damage. The lowest dose at which an adverse effect is observed is the LOAEL.
It is important to note that the LOAEL is a relative measure of toxicity. It only provides information on the dose at which an adverse effect is first observed and not on the severity of the effect. In addition, the LOAEL may vary depending on the species tested and other factors.
In summary, the LOAEL is the lowest dose at which an observable adverse effect is detected. This value is used to establish a safe level of exposure to a substance.

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When H₂SO₄ is neutralized by NaOH in an aqueous solution, the net ionic equation is:

2H⁺(aq) + 2OH⁻(aq) → 2H₂O(l)

A chemical equation known as an ionic equation expresses the electrolytes in an aqueous solution as dissociated ions. For the reaction between \(H_{2}SO_{4}\) , NaOH that neutralizes it, we must write the net ionic equation.

The reaction's equilibrium chemical equation is:

\(Na_{2} SO_{4}\)(aq) + \(2H_{2}O\) = \(H_{2}SO_{4}\) (aq) + \(2NaOH\)(aq) (l)

We shall now draft the ionic equation.

The reaction's ionic equation is

\(2 Na ^{+} (aq) + SO_{4} ^{2-} (aq) + 2H_{2}O = 2H^{+} (aq) + SO_{4} ^{2-} (aq) + 2 Na ^{+} (aq)+ 2OH(aq) (l)\)

The net ionic equation is then obtained by canceling out the spectator ions Na+ and SO42.

The neutralization reaction's net ionic equation is:

2H⁺(aq),  2OH⁻(aq), and 2H₂O (l)

In light of this, the net ionic equation for the neutralization of H2SO4 and NaOH is:

2H⁺(aq) + 2OH⁻(aq) → 2H₂O(l)

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Spectral absorption and emission lines are used to determine the composition of a gas by analyzing the specific wavelengths of light that are absorbed or emitted by the gas.

Each element or molecule has a unique set of energy levels, and when the gas interacts with light, it can absorb or emit photons at specific wavelengths corresponding to transitions between these energy levels.

By measuring the wavelengths of absorbed or emitted light, scientists can identify the elements or molecules present in the gas and determine their concentrations.

Explanation:

When light passes through a gas, certain wavelengths of light are absorbed by the gas, leading to dark absorption lines in the spectrum. These absorption lines are specific to the elements or molecules present in the gas and are characteristic of their energy level transitions. By comparing the observed absorption lines to known spectral patterns of elements or molecules, scientists can identify the composition of the gas.

On the other hand, when a gas is excited or heated, it can emit light at specific wavelengths, resulting in bright emission lines in the spectrum. The emission lines correspond to the energy level transitions of the gas, and again, they are unique to the elements or molecules present. By analyzing the emission lines, scientists can determine the composition of the gas.

By studying the positions and intensities of absorption and emission lines in the spectrum, scientists can obtain valuable information about the composition and concentration of the gas. Spectral analysis techniques are widely used in various scientific fields, such as astronomy, chemistry, and environmental monitoring, to identify the components of gases and gain insights into their properties and behaviors.

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Answer:

(A) H2CO3 = H20 + CO2

Explanation:

Carbonic acid is formed from carbon dioxide and water so its equation will be

H2CO3 → H2O + CO2

The equation is balanced as same no of atoms of each specie is present both sides

The percentage (w/v) of dextrose in the solution is approximately 1.9817%. To determine the percentage (w/v) of dextrose in a solution with a given osmolarity, we need to calculate the amount of dextrose present in 100 mL of the solution.

First, we convert the osmolarity from mosmol/L to mosmol/100 mL:

100 mosmol/L = 100 mosmol/100 mL

Next, we calculate the number of moles of dextrose present in 100 mL of the solution:

Number of moles = Osmolarity (in mosmol/100 mL) / 1000

Number of moles of dextrose = 100 mosmol/100 mL / 1000 = 1 mosmol/100 mL

Now, we can calculate the mass of dextrose present in 100 mL of the solution:

Mass of dextrose = Number of moles of dextrose * Molecular weight of dextrose

Mass of dextrose = 1 mosmol/100 mL * 198.17 g/mol = 1.9817 g/100 mL

Finally, we can calculate the percentage (w/v) of dextrose:

Percentage (w/v) = (Mass of dextrose / Volume of solution) * 100

Percentage (w/v) = (1.9817 g/100 mL / 100 mL) * 100 = 1.9817%

Therefore, the percentage (w/v) of dextrose in the solution is approximately 1.9817%.

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Answer:N2S5

Explanation:

The chemical formula of pentasulfur dinitride is N₂S₅. There are two nitrogen atoms and five sulfur atoms are present in it.

The term chemical formula is defined as the constituent components of a compound together with the number of atoms in every element's smallest unit, such as a molecular unit.

There are three types of chemical formulas that are empirical formula, structural formula and molecular formula.

The simplest whole-number ratio of the atoms in a compound is shown by empirical formulae, the number of each type of atom in a molecule is exhibited by molecular formulas, and the bonds between the atoms in a molecule are shown by structural formulas.

Thus, The chemical formula of pentasulfur dinitride is N₂S₅.

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To determine which lone pairs are participating in aromaticity, we need to look at the structure of the molecule and the conditions for aromaticity.

For a molecule to be aromatic, it must meet the following conditions:

The molecule must be cyclic.

The molecule must be planar.

The molecule must have a continuous ring of overlapping p orbitals.

The molecule must have a total of (4n + 2) π electrons, where n is an integer.

Based on these criteria, the lone pairs that can participate in aromaticity are: Lone pair on nitrogen: This lone pair can participate in aromaticity in pyrrole, which has a continuous ring of overlapping p orbitals and a total of (4n + 2) π electrons. One lone pair on oxygen: This lone pair can participate in aromaticity in furan, which has a continuous ring of overlapping p orbitals and a total of (4n + 2) π electrons. None of the lone pairs: In most cases, the lone pairs do not participate in aromaticity. For example, in benzene, the lone pairs on carbon and hydrogen do not participate in aromaticity. Similarly, in pyridine, the lone pair on nitrogen does not participate in aromaticity. In summary, the lone pairs that can participate in aromaticity are the lone pair on nitrogen and the lone pair on oxygen (in certain cases), while in most cases, the lone pairs do not participate in aromaticity.

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Answer:

when the velocity is at a higher *rate of speed*, the faster the object will move!

Explanation:

o find out how many liters of blood a 151 lb adult has, we need to convert the weight from pounds to pints, and then from pints to liters. First, we'll convert the weight from pounds to pints. Given that 2 pints = 1 qt, we can set up the proportion:

151 lb * (2 pints / 1 qt) = 151 lb * (2 pints / 1 qt) * (1 qt / 2 pints)

= 151 lb * 1 qt

= 151 qt.

So, the adult has 151 pints of blood.

Next, we'll convert the pints to liters. Given that 1 L = 1.057 qt, we can set up the proportion:

151 pints * (1 L / 1.057 qt) = 151 pints * (1 L / 1.057 qt) * (1.057 qt / 1 L)

= 151 pints * 1 L

= 142.93 L.

Therefore, the adult has approximately 142.93 liters of blood.

A 151 lb adult has approximately 142.93 liters of blood.

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The individual weighing 151 lbs has approximately 4.26 liters of blood

The given information states that an adult weighing 151 lbs has approximately 9.0 pints of blood. To find out how many liters of blood this individual has, we can use the conversion factors provided.

First, we need to convert pints to quarts. Since 2 pints equal 1 quart, we can divide 9.0 pints by 2 to get the equivalent amount in quarts. This gives us 4.5 quarts of blood.

Next, we need to convert quarts to liters. According to the conversion factor given, 1 liter is equal to 1.057 quarts. To find the number of liters, we can divide the number of quarts (4.5) by the conversion factor (1.057). This calculation gives us approximately 4.26 liters of blood.

Therefore, the individual weighing 151 lbs has approximately 4.26 liters of blood.

In summary:
- 151 lbs adult has approximately 9.0 pints of blood.
- Converting 9.0 pints to quarts, we get 4.5 quarts of blood.
- Converting 4.5 quarts to liters, we get approximately 4.26 liters of blood.

So, the individual has approximately 4.26 liters of blood.

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mass of 1 mole of N is 14g

so mass of 3.45 mole is

3.45 × 14 = 48.3 g