How long is the Texas TABC course?.

Answer:

True.

Explanation:

Answer:

2Mg + O2 → 2MgO

Explanation:

Answer:

Anything that occupies space and has mass is matter but the matter that has specific composition and chemical characteristics is substance

Answer:

Substance: Something that has only 1 atom, for example; Water.

Matter: Made up of more than 1 atom, example; Humans

Explanation:

As said a substance is something that has only 1 atom like water or tin.

Matter is well almost everything in the universe, there's a reason some people say; This is Human Matter. I'm pretty sure it's somewhere in the bible too.

If you were to search it up the other persons answer would come up

Answer:

A.

Explanation:

Answer:

Actually both of ya are incorrect, it would be D. 36.5 mL, on study island it says that.

Explanation:

Pure elements has Gibbs free energy equal to 0.

The Gibbs free energy is a concept in chemistry specially of thermodynamics. The maximum amount of work that can be accomplished at a constant temperature and pressure by a closed system can be calculated using the Gibbs free energy (also known as Gibbs energy; symbol: denoted as delta G). Additionally, it offers a prerequisite for any processes like chemical reactions that might take place in such circumstances.

When a system achieves equilibrium without being pushed by an input electrolytic voltage, the Gibbs energy is the thermodynamic potential that is reduced. At the equilibrium point, its derivative w.r.t. the system's reaction coordinate vanishes.

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Conevrting 1.9 kilojoule(kJ) into:

a) 1.9 kJ = 450 cal

b) 1.9 kJ = 1900 J

Similar to how kilometers measure distance, a kilojoule is a unit used to measure energy. Some nations continue to utilize the Calories (Cal) system, which was once used to quantify food energy. These are the conversions: 1 kJ = 0.2 Cal.

A calorie is a unit of energy measurement. Typically, the energy content of meals and beverages is determined in terms of calories. You must consume fewer calories each day than your body uses up in order to lose weight. Calories are necessary for human survival. Without energy, the body's cells would die, the heart and lungs would stop pumping, and the organs wouldn't be able to carry out essential life tasks. Through their consumption of food and liquids, people can absorb this energy.

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The option that is not a known advantage of natural gas over other fossil fuels is: C. It is far more abundant than any other fossil fuel.

Natural gas has several advantages over other fossil fuels. Firstly, it burns more completely than other fossil fuels, which means it produces fewer pollutants and greenhouse gases.

This leads to the second advantage, as natural gas burns more cleanly than other fossil fuels, resulting in reduced emissions of pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter.

However, when it comes to abundance, natural gas is not necessarily more abundant than other fossil fuels.

While natural gas reserves can be substantial, the availability and reserves of other fossil fuels like coal and oil are also significant. Therefore, option C is not a known advantage of natural gas over other fossil fuels.

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Answer:

True

Explanation:

Answer:

Environmentalism

Explanation:

Environmental Science is the pursuit of knowledge about the environment, while Environmentalism as you know, "a social movement dedicated to protecting the natural world and people from undesirable changes".

Answer:

hcl is a covalent compound

Explanation:

The two ways to increase the yield (amount) of ammonia based on this principle is dropping the temperature and Removal of the product over time.

Le Chatelier's principle, also termed Chatelier's principle, is a chemical principle that is used to forecast how a change in circumstances may affect chemical equilibria.Le Chatelier's Principle states that there are three variables that can affect a system's equilibrium balance.These outside variables include:pressure, concentration, and temperature.Le Chatelier's principle states that if the concentration of any reactant or product in an equilibrium reaction varies, the location of the equilibrium mixture shifts to lessen the impact of the concentration changes.The equilibrium moves to the right when additional reactants are added because more reactants cause the equilibrium to shift in the direction of the products or outcomes.

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Answer:

Plasma Membrane

Explanation:

Its the outer wall of a cell

Answer:

The answer is plasma membrane took the k12 test

Explanation:

Answer:

money

Explanation:

you can not live without money

The mass of water, H₂O produced from the reaction is 72.06 g

We'll begin by calculating the mass of NH₄NO₃ that reacted and the mass of H₂O produced from the balanced equation.

NH₄NO₃ —> N₂O + 2H₂O

Molar mass of NH₄NO₃ = 80.03 g/mol

Mass of NH₄NO₃ from the balanced equation = 1 × 80.03 = 80.03 g

Molar mass of H₂O = 18.01 g/mol

Mass of H₂O from the balanced equation = 2 × 18.01 = 36.02 g

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O

Finally, we shall determine the mass of H₂O produced by the reaction of 160.1 g of NH₄NO₃.

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O.

Therefore,

160.1 g of NH₄NO₃ will react to produce = (160.1 × 36.02) / 80.03 = 72.06 g of H₂O.

Thus, the mass of water, H₂O produced from the reaction is 72.06 g

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One atom thick film of carbon known as graphene is 200 times stronger than steel and one hundred times thinner than a sheet of paper.

1 atom thick

Pure carbon atoms are arranged in a hexagonal lattice in a single layer to form graphene, which is held together by sp2 bonds. Graphite is composed of layers of graphene. The thinnest material known to exist is graphene, which measures one atom thick (0.345Nm). Actually, it is two-dimensional.

A hexagonal honeycomb lattice securely holds a single layer (monolayer) of carbon atoms together to form graphene. It is an allotrope of carbon with sp2-bonded atoms arranged in a plane and a molecular bond length of 0.142 nanometers.

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The four most abundant elements found in living organisms are: (d) Hydrogen, nitrogen, oxygen, and carbon. These elements make up the majority of the biomolecules essential for life, such as proteins, carbohydrates, lipids, and nucleic acids.

The most abundant element in the universe is the Hydrogen which 75% of the universe and remaining 25% is covered by the Helium. The Oxygen is the third most abundant element of the Universe as its mainly found only on the planet earth and the scientists are still finding oxygen in the outer earth.

On the Earth, the most abundant element in the crust is Oxygen which covers 46.6% of the total elements in the crust and the element abundant after oxygen in the earth crust is the Silicon with 27.7%

For Human body, the most abundant element is the Oxygen which Includes 65% of the total body weight.

So, the Hydrogen and Oxygen are the two most abundant element of the Universe also vital elements of the living organisms.

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Answer:

Yes.

Explanation:

Electric charge cannot change the elemental composition of a substance.

The application of charge to the aluminium foil does not change the composition of the foil and hence the foil will still be made up of aluminium atoms.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

SLS functions in cleaning product as a surfactant, wetting surfaces, emulsifying or solubilizing oils, and suspending soil so that they can be rinsed away. This ingredient contributes foaming properties to cleaning products. SLS is safe for use in cleaning products.

Sodium lauryl sulfate and ammonium lauryl sulfate are surfactants that help with the mixing of oil and water. As such, they can clean the skin and hair by helping water to mix with oil and dirt so that they can be rinsed away or suspend poorly soluble ingredients in water.

The U.S. Food and Drug Administration (FDA) includes sodium lauryl sulfate on its list of multipurpose additives allowed to be directly added to food. Sodium lauryl sulfate and ammonium lauryl sulfate are also approved indirect food additives. For example, both ingredients are permitted to be used as components of coatings.

The safety of sodium lauryl sulfate and ammonium lauryl sulfate has been assessed by the Cosmetic Ingredient Review  (CIR) Expert Panel on two separate occasions (1983 and 2002), concluding each time that the data showed these ingredients were safe in formulations designed for brief, discontinuous use, followed by thorough rinsing from the surface of the skin. In products intended for prolonged contact with skin, concentrations should not exceed 1%.  

Sodium lauryl sulfate and ammonium lauryl sulfate may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Regulation of the European Union.

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The given statement "Because toluene is highly water-soluble and has a high molecular weight, it is rapidly absorbed into the liver" is False. Because, Toluene is actually not highly water-soluble, but is instead considered hydrophobic, or "water-fearing".

This is because it has a nonpolar structure and is primarily soluble in organic solvents such as benzene or chloroform, rather than water. Toluene does have a high molecular weight, which allows it to readily penetrate cell membranes and enter organs such as the liver. Once inside the liver, toluene can undergo metabolism to form various metabolites, some of which can be toxic and harmful to the liver and other organs. Toluene exposure has been associated with liver damage and dysfunction.

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In alkanes, the elements present are hydrogen and carbon.

Alkanes are hydrocarbons, which means they consist only of hydrogen (H) and carbon (C) atoms. These atoms are bonded together in a single-bonded, saturated structure. Other elements, such as nitrogen, oxygen, phosphorous, and metals, are not present in alkanes.

Alkanes are a type of hydrocarbon consisting of only carbon and hydrogen atoms, and thus the correct answer is carbon and hydrogen. Alkanes are organic compounds that belong to the family of aliphatic hydrocarbons, which means they have straight or branched carbon chains. The general formula for alkanes is CnH2n+2, where "n" represents the number of carbon atoms in the chain. Alkanes are typically classified as saturated hydrocarbons, meaning they contain the maximum number of hydrogen atoms per carbon atom and have only single bonds between the carbon atoms.

The absence of nitrogen, oxygen, phosphorus, and metals in the definition of alkanes distinguishes them from other types of organic compounds, such as amines, alcohols, phosphines, and organometallics, which contain these elements.

Therefore, in alkanes, the elements present are hydrogen and carbon.

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The statement which is true about the valence electrons of cesium and calcium is as follows:

Thus, the correct option for this question is B.

Valence electrons may be defined as the number of electrons that are present in the outermost shell of any element. For example, Sodium has an atomic number of 11. Its electronic configuration is 2, 8, and 1. Here, one electron is present in the outermost shell, so, sodium has only one valence electron.

According to the electronic configuration, it is found that cesium has only one valence electron, while calcium has two. So, the number of valence electrons is more in calcium as compared to cesium.

But, the valence electron found in cesium is at a higher energy level due to the completed d-orbital.

Therefore, the correct option for this question is B.

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There are two non-bonding electron pairs are on the central atom in SF₅

A Sulfur atom (S) in the middle of the SF₅ Lewis structure is surrounded by five Fluorine atoms (F). Between each Fluorine atom and the Sulfur atom (S), there are 5 single bonds (F). All of the fluorine atoms (F) have 3 lone pairs, and the Sulfur atom has 1 lone pair (S).

So, as shown in the following picture, the central atom has two free electrons or a pair of non-bonding electrons.

Since it has five bond pairs and one lone pair. As a result, its molecules have a square pyramidal shape.

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Answer:

The current of the toaster is 3.93A

Explanation:

Using the GRASS method:

G: Given: The information that is given is that we have 28Ω of Resistance and 110V of voltage.

R: Required: We need to find the current measured.

A: Action: We can use Ohm's law that relates resistance, voltage and current in the equation:

V = R*I

Or:

I = V/R

Where I is current in A, V is voltage = 110V and R is resistance = 28Ω

S: Solve:

I = 110V / 28Ω

I = 3.93A

S: Statement:

The answer is (a) 3.52 g, which is the closest value to the calculated maximum mass of Li3N.

To determine the maximum mass of Li3N that can be produced, we need to use stoichiometry and determine which of the reactants is the limiting reagent.

First, we need to determine the number of moles of each reactant:

moles of Li = 3.50 g / 6.94 g/mol = 0.503 mol

moles of N2 = 3.50 g / 28.02 g/mol = 0.125 mol

According to the balanced equation, 6 moles of Li react with 1 mole of N2 to produce 2 moles of Li3N. Therefore, the limiting reagent is N2 since only 0.125 moles are available, which is not enough to completely react with all the Li.

Using the mole ratio from the balanced equation, we can calculate the maximum mass of Li3N that can be produced:

0.125 mol N2 × (2 mol Li3N / 1 mol N2) × (50.94 g Li3N / 1 mol Li3N) = 3.23 g Li3N

Therefore, the answer is (a) 3.52 g, which is the closest value to the calculated maximum mass of Li3N.

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Answer:

I do

Explanation:

But i am unable to share my grade because of personal info.

Answer:

11 th

Explanation:

Three common naturally radioactive elements are uranium, thorium, and radium.

These elements undergo radioactive decay, emitting radiation in the form of alpha, beta, or gamma particles. Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles.

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Three common naturally radioactive elements are uranium, potassium, and carbon-14.

Radioactivity is a phenomenon in which certain unstable atoms undergo spontaneous nuclear decay and emit radiation in the form of particles or waves. Many elements found in nature are naturally radioactive, meaning they contain unstable isotopes that undergo radioactive decay.

Three common naturally occurring radioactive elements are:

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Full Question: "Some elements are naturally radioactive. Can you list 3 common ones?"

Answer:

Earth Science?

Explanation:

its not marine science or life so its physical or earth