Calculate the mass of hydrogen produced when 72 g of magnesium
reacts with sulfuric acid.

Higher concentrations of reactants = More collisions between molecules = More possible reactions between the molecules = Higher reaction rate

A solution is made up of two components, solute and solvent. In chemistry, we define the concentration of solution as the amount of solute dissolved in the solution.

Increasing the concentration of reactants generally increases the rate of reaction because more of the reacting molecules or ions are present to form the reaction products. This is especially true when concentrations are low and few molecules or ions are reacting.

Hence, Higher concentrations of reactants = More collisions between molecules = More possible reactions between the molecules = Higher reaction rate.

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Explanation:

calcium hydride + water → calcium hydroxide + hydrogen

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Answer:

B

Explanation:

got it right on edg

The substance that will cool the fastest when equal masses are heated to the same temperature is the one with the lowest specific heat.

This is because a substance with a lower specific heat requires less energy to raise its temperature by a certain amount, and therefore it will release heat more quickly when it cools down.

Out of the given substances, substance A has the lowest specific heat of 0.90 J/g-°C, so it will cool the fastest when equal masses are heated to the same temperature.

Substance B has a specific heat of 1.70 J/g-°C, substance C has a specific heat of 2.70 J/g-°C, and substance D has the highest specific heat of 4.18 J/g-°C.

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This canyon is an example of how the surface of Earth changes slowly due to the slow and gradual process of erosion by water and wind.

The slow and gradual process of erosion by water and wind is responsible for the slow change in the surface of Earth demonstrated by the canyon.

The canyon demonstrates how the surface of Earth changes slowly due to the process of erosion by water and canyon, which gradually wear away the rock and reshape the landscape over millions of years.

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Answer:

- an interpretation supported by facts.

Explanation:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.

Answer: A

Explanation:

Answer:

A. HE

Explanation:

Answer:

172.385 g/mol

Explanation:

Magnesium Tartrate is C4H4MgO6

C - 12.01 g/mol

H - 1.01 g/mol

Mg - 24.305 g/mol

O - 16.00 g/mol

12.01(4) + 1.01(4) + 24.305 + 16(6) = 172.385 g/mol

Answer:

172.38

Explanation:

\(C_4H_4MgO_6\\C=12.01\\H=1.01\\Mg=24.30\\O=16.00\\\\4(12.01)+4(1.01)+24.30+6(16.00)\\48.04+4.04+24.30+96\\=172.38\)

C = 12.01

H=1.01

Mg=24.30

O =16.00

4(12.01)+4(1.01)+24.30+6(16.00)

48.04 +4.04+24.30+96

=172.38

Answer:

Explanation:

this is the answer hope it helps!(:

The chemical formula of pentanitrogen heptachloride is N₅Cl₇ as it has 5 nitrogen atoms and 7 chlorine atoms.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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Faster molecules have fewer collisions than slower molecules is True about molecular speed.

Molecular speed refers to the average distance gases or molecules travelled atca particular time rate.

It is valid in ideal gas, where the molecules do not interact with others.

Average molecular speed = Square root (3 (ideal gas constant) * (Temperature)/m)

Therefore, Faster molecules have fewer collisions than slower molecules is True about molecular speed.

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Answer: Based on the description provided, it sounds like the volcano in question is a stratovolcano, also known as a composite volcano.

Explanation:

Stratovolcanoes are characterized by having viscous magma that can produce pyroclastic flows (flows of hot ash, gas, and rock) and are made up of layers of ash, lava, and rock. Stratovolcanoes are often cone-shaped and can be quite tall. They are formed through the accumulation of material ejected during eruptions, and they are typically found along plate boundaries where tectonic plates are converging. Some well-known examples of stratovolcanoes include Mount St. Helens, Mount Fuji, and Mount Vesuvius.

As a result of the sun's radiation pressure, comet tails will always point away from the sun. Compared to the gravitational force acting in the direction of the sun, pushing them away from the sun.

The study of the chemical reactions that radiation has on the matter is known as radiation chemistry, a branch of nuclear chemistry. This field differs greatly from radiochemistry in that the material being chemically altered by radiation does not always need to contain radioactivity. As an illustration, consider how water is transformed into hydrogen gas and hydrogen peroxide.

Ionizing radiation interacts with the electrons of the absorber as it passes through matter, depositing energy in the process. Removing an electron from an atom or molecular link causes radicals and excited species to develop as a result of the radiation's interaction with the absorbing species. The radical species then continue to interact with one another or with molecules nearby.

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The treatment for magnesium poisoning involves slowly injecting 10mL of calcium gluconate (2.2mmol of calcium in a 10mL vial; formerly known as 10% solution) into the vein over the course of 10 minutes.

What are the symptoms and treatment for magnesium sulfate toxicity?

Early symptoms of magnesium toxicity include nausea, feeling heated, flushing, somnolence, double vision, slurred speech, and weakness. The first sign of magnesium toxicity is typically the loss of patellar reflexes, which happens with serum magnesium levels of 9 mg/dl to 12 mg/dl.

What symptoms indicate toxicity from magnesium sulfate?

Keep an eye out for the warning signs and symptoms of magnesium sulfate toxicity, such as hypotension, areflexia (loss of DTRs), respiratory depression and arrest, oliguria, shortness of breath, chest pains, slurred speech, hypothermia, confusion, and circulatory collapse.

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C. Continuous metabolic production of free hydrogen ions

The processes of creating and breaking down glucose molecules are both examples of metabolic pathways. A metabolic pathway is a chain of related chemical reactions that feed each other. The pathway takes in a single or extra beginning molecule and, through a sequence of intermediates, converts them into merchandise.

Metabolism (stated: meh-TAB-uh-Liz-um) is the chemical reactions within the body's cells that alternate meals into power. Our bodies want this strength to do the entirety from moving to wondering to growing. particular proteins in the body manipulate the chemical reactions of metabolism.

A metabolic product is a compound produced via the cells and is excreted to the extracellular medium. it can be produced in the number one metabolism, e.g. carbon dioxide, ethanol, acetate, or lactate, or an extra complicated one, e.g. a secondary metabolite or a heterologous protein secreted to the extracellular medium.

The question is incomplete. Please read below to find the missing content.

Which normal physiologic process contributes most to the need for acid-base balance

A. Continuous organ production of bicarbonate from carbonic acid

B. Continuous alveolar exchange of oxygen and carbon dioxide

C. Continuous metabolic production of free hydrogen ions

D. Continuous kidney formation of urine from blood

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The correct option is (d) i.e. all answers are correct, To determine the ratios of elements in a compound, we can use several mathematical tools such as:

1. The mole concept and Avogadro's number, which allows us to convert between mass and number of moles of a substance.

2. The chemical formula, which gives the ratio of atoms of each elements in a compound.

3. The law of definite proportions (also known as the law of constant composition), which states that the ratios of elements in a pure compound are always the same, regardless of the source or amount of the compound.

All these tools can be used to determine the ratios of elements in a compound like magnesium oxide (MgO) and magnesium metal (Mg), as well as in any other compounds.

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The boiling point is the characteristic on which a by-products of the refining of petroleum are separated.

For separating different types of petroleum from one another, we use the boiling method in which those substance having lower boiling point can be removed from the combine solution. In this way, all of the materials are separated from one another.

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Answer:

the water sample with higher salinity will have greater mass, and it will therefore be more dense.

Explanation:

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Answer: Mg(NO₃)₂ * 6 H₂O

Explanation:

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Explanation:

The additional information that is required to obtain the enthalpy of neutralization is the density of the solution.

We know that the enthalpy of neutralization is defined as the heat that is evolved when  an acid is neutralized by a base under standard conditions. We can be able to obtain the enthalpy of the neutralization of the acid and the base by performance of some simple chemical calculations.

To carry out this calculations we need the all of the pieces of information that have been listed in the question such as the masses of the solution, the temperature of the solution in the initial and final states and so on.

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5 examples of covalent compounds hydrogen (H₂), oxygen (O₂), nitrogen (N₂), water (H₂O), and methane(CH₄) due to high ionization energy.

Due to their extremely high ionization energy, some elemental atoms are unable to surrender their electrons. While some people might not be able to gain an electron due to low electron affinity. The only other option is to share electrons so that neither a shortfall nor an excess of electrons exists. Covalent bonds are the next bonds to form in such a configuration. It is important to keep in mind that covalent bonds share already existing electrons amongst the atoms rather than contributing to the production of new ones. Covalently bound elements or compounds cannot conduct electricity because there are no free electrons. Covalent bonds, however, are incredibly strong, which is why they produce the strongest elements or compounds.

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Trans fats are a type of unsaturated fat that is generally found in foods containing polyunsaturated fatty acids (PUFAs). They are produced commercially through a process called partial hydrogenation, which converts liquid oils into solid fats. This process enhances the shelf life and stability of foods, which is why trans fats are commonly found in processed foods such as baked goods, fried foods, and snacks.

While PUFAs help to reduce cholesterol levels and inflammation, trans fats can raise bad cholesterol levels (LDL) and lower good cholesterol levels (HDL), leading to an increased risk of heart disease.
However, trans fats are not healthy for our bodies. They raise our levels of "bad" cholesterol, lower our levels of "good" cholesterol, and increase our risk of heart disease, stroke, and type 2 diabetes. The American Heart Association recommends limiting trans fat intake to less than 1% of our daily calorie intake.

It's important to note that not all foods containing PUFAs are high in trans fats. PUFAs are healthy fats that can be found in foods such as fatty fish, nuts, and seeds. To reduce your intake of trans fats, it's best to choose whole, unprocessed foods and to read food labels carefully to avoid foods that contain hydrogenated oils.

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Answer:

more reactents and products

A redox reaction is when there is simultaneous oxidation and reduction. CuO+H2→Cu+H2O. Example: In this reaction, hydrogen is oxidised to water while copper oxide is reduced to copper.

By assuming that all bindings to the atoms in molecules are ionic, we can use the oxidation numbers assigned to atoms in molecules to detect redox reactions. In a reaction, oxidation is shown by an increase in the number of oxidations, and reduction is indicated by a copper. Consider the sodium-water reaction. In this reaction, sodium removes hydrogen from water while both becoming oxidised by obtaining oxygen and reducing the water to hydrogen by removing oxygen at the same time.

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A brownfield is a property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.

A “brownfield” generally refers to a parcel of land that was previously used for industrial purposes and which is contaminated by low concentrations of hazardous chemicals.

A brownfield development requires more work and investment upfront: existing structures may have to be demolished, materials must be removed, and developers may have to engage in extensive environmental cleanup to remove pollutants.

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a- Aluminium bromide has the following formula: AlBr₃, so the unbalanced equation is:

As we can see, for now the aluminium atoms are balanced, but the bromine is not. To balance the bromine, we can put 3 in front of Br₂ and 2 in front of AlBr₃. That way, we will have a total of 6 bromine atoms in each side:

But now the Al is unbalaced, so to fix it we can add a 2 in front of Al to get the balanced equation:

b- The aluminium are the lone atoms, so, counting them, we see that there are 8 atoms initially.

c- Each pair of empty circles represent a molecule of Br₂, counting them we have 6 molecules initially.

d- The proportion of Al to AlBr₃ is 2:2, that is, 1:1, so if all Al reacts, we would produce the same amount of AlBr₃ as Al, which would be 8 molecules.

The proportion of Br₂ to AlBr₃ is 3:2, so is all Br₂ reacts we will get 2/3 of that as AlBr₃, which would be 6*2/3 = 4 molecules.

This shows that there is not enough Br₂ to react with all 8 atoms of Al, meaning only 4 molecules of AlBr₃ will be produced.

e- Since there is not enough Br₂ to react with all Al present, the limiting reactant is the bromine.

f- The excess reactant is the other one, so if bromine is the limiting, the aluminium is the excess reactant.

g- Since only 4 molecules of AlBr₃ will be formed with all the bromine present, since the proportion of Al to AlBr₃ is 1:1, we wil need only 4 atoms of Al to produce them, which meand that, from the total 8 atoms, we will get

4 atoms of Al as excess reactant after the reaction is complete.

Answer: For a given mass and volume, how much physical space a material takes up, of an object or substance, the density remains constant at a given temperature and pressure. The equation for this relationship is ρ = m / V in which ρ (rho) is density, m is mass and V is volume, making the density unit kg/m3.

Explanation:

Answer:

Bakelite is made from the reaction between formaldehyde and phenolic materials at high temperatures. Bakelite is used for wire insulation, break pads and other automotive parts, and other electronics components.

Answer:

20.2

Explanation: