Which properties cause chemical reactions?

Answer:

We can use the information given in the problem to calculate the RAM (relative atomic mass) of X and the minimum volume of hydrogen used in the reaction.

First, we need to calculate the mass of oxygen in the oxide XO:

mass of oxygen = mass of oxide - mass of metal

mass of oxygen = 4.5 g - 3.6 g

mass of oxygen = 0.9 g

Next, we can use the mass of oxygen to calculate the number of moles of oxygen:

moles of oxygen = mass of oxygen / molar mass of oxygen

moles of oxygen = 0.9 g / 16.00 g/mol

moles of oxygen = 0.05625 mol

Since the oxide XO is formed by the combination of X and oxygen, we can assume that the mass of X in the oxide is equal to the mass of the oxide minus the mass of oxygen:

mass of X = mass of oxide - mass of oxygen

mass of X = 4.5 g - 0.9 g

mass of X = 3.6 g

We can use the mass of X and the number of moles of oxygen to calculate the number of moles of X:

moles of X = mass of X / atomic mass of X

moles of X = 3.6 g / atomic mass of X

Combining this with the stoichiometry of the reaction, which tells us that 1 mole of XO reacts with 1 mole of H2 to produce 1 mole of X and 1 mole of H2O, we can write:

moles of H2 = moles of X / 1 = (3.6 g / atomic mass of X) / 1

To determine the minimum volume of hydrogen at STP (Standard Temperature and Pressure), we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature. At STP, the pressure and temperature are 1 atm and 273 K, respectively, and the universal gas constant is 0.08206 L atm/(mol K).

Substituting the given values and solving for V, we get:

V = nRT/P = [(3.6 g / atomic mass of X) / 1] * (0.08206 L atm/(mol K)) * 273 K / 1 atm

Simplifying and solving for the atomic mass of X, we get:

atomic mass of X = (3.6 g / V) * (1 mol/2 mol of H2) * (1 mol of XO/1 mol of X) * (16.00 g/mol of oxygen + atomic mass of X)

Substituting the given values, we get:

atomic mass of X = (3.6 g / V) * (0.5) * (1 / 1) * (16.00 g/mol + atomic mass of X)

Multiplying out, we get:

atomic mass of X = (1.8 g / V) * (16.00 g/mol + atomic mass of X)

Solving for atomic mass of X, we get:

atomic mass of X = (1.8 g / V) * 16.00 g/mol / (1 - 1.8 g / V)

Substituting V = 22.4 L (the volume of 1 mole of gas at STP), we get:

atomic mass of X = (1.8 g / 22.4 L) * 16.00 g/mol / (1 - 1.8 g / 22.4 L)

atomic mass of X ≈ 56.1 g/mol

Therefore, the RAM of X is approximately 56.1 g/mol, and the minimum volume of hydrogen used in the reaction is approximately 22.4 L at STP.

Answer:

I think its 1.2 cause I divided 15.5 with 12 and got 1.2 as an answer

She goes away.

Negative

She doesn't go away.

Answer:

Mg3N2

Explanation:

divide 50 by 6 (molar ratio) and you get something more than 8

since Mg3N2 is less it is the limiting reactant

Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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The pair of elements most likely to combine in order to form a salt would be Mg and Br. Option 3.

Salts are chemical compounds formed by the combination of positive ions, usually from bases, and negative ions, usually from acids. In other words, salt cannot be formed from two positive or two negative ions.

Going by this definition:

On the other hand, Mg forms a positive ion, \(Mg^{2+\), and Br forms a negative ion, \(Br^-\). Thus both can form a salt, unlike other options.

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16.52 milliliters of 8.54×10⁻² M Ba(OH)2(aq) are required to titrate 54.90 mL of 5.14×10⁻² M HNO₃

A titration is a procedure that uses a known solution to determine the concentration of an unknown solution. Until the reaction is finished, the titrant (the known solution) is typically supplied from a buret to a known volume of the analyte (the unknown solution).

Titration is an essential technique in analytical chemistry, and it is also known as volumetric analysis.

n-factor for Ba(OH)₂ =2

Thus, dilution equation becomes:

n × M₁V₁= M₂V₂

2 x 8.54 x 10⁻² x V₁ = 5.14 x 10⁻² x (54.90/1000)

V₁= 16.52 × 10⁻³¹

V₁   = 16.52 ml

Thus, 16.52 milliliters of 8.54×10⁻² M Ba(OH)2(aq) are required to titrate 54.90 mL of 5.14×10⁻² M HNO₃

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Answer:

Based on the Modern Periodic table, there is an increase in the electropositivity of the atom down the group as well as increases across a period. On comparing the electropositivities of the mentioned oxides central atom, it is seen that Ca is most electropositive followed by Al, Si, C, P, and S is the least electropositive.  

With the decrease in the electropositivity, there is an increase in the acidity of the oxides. Thus, the increasing order of the oxides from the least acidic to the most acidic is:  

CaO > Al2O3 > SiO2 > CO2 > P2O5 > SO3. Hence, CaO is the least acidic and SO3 is the most acidic.  

Since acidity increases across a period from left to right, and decreases down a group, the oxides can be ranked from the least acidic to the most acidic as follows:

\(\mathbf{CaO < Al_2O_3 < SiO_2 < CO_2 < P_2O_5 <SO_3}\)

Note the following:

Using the periodic table diagram given in the attachment below, we can rank the given oxides according to their increasing acidity.

Therefore, since acidity increases across a period from left to right, and decreases down a group, the oxides can be ranked from the least acidic to the most acidic as follows:

\(\mathbf{CaO < Al_2O_3 < SiO_2 < CO_2 < P_2O_5 <SO_3}\)

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Answer:

if i got it right i think it woud be a

Answer:

10.53 moles ZnCl2

Explanation:

Answer:

for skin cancer use sunscreen but for cancer that's most common eat healthy and take vitamins as much as you can.

Explanation:

Answer:

erwin discovered how to accurately calculate the energy levels of electrons in atoms

Explanation:

hope this helps.

In 1926, Erwin Schrödinger expressed a wave equation that explicitly determined the energy levels of electrons in atoms. All the time Erwin Schrödinger was alive, he persisted in his study and published various articles on a diversity of topics, including the difficulty of joining gravitation and electromagnetism.

we have to transform the mass of the reactants into mols to do that we have to divide the mass of each component by its molar mass. (molar mass of MnO2= 89.6g/mol; molar mass of HCl= 36.4 g/mol)

To find the limiting reactant we chose one of the reactants, MnO2 in this case, and calculate how many mols of the other reactant (HCl) would be consumed for that amount of MnO2

Answer:

The answer is "B will give up two electrons to form bonds".

Explanation:

To first solve this multiple choice question, we need to identify the Atoms, A and B.

We can do this by looking at their amount of electrons.

For instance,

A = Neon = 10 Electrons

B = Magnesium = 12 Electrons

With this information we can then look at both elements charges to see what they need to form a bond.

In this case Neon doesn't want to form a bond, since they're in a complete octet, however Magnesium does not have a complete octet. So, it wants to give up two electrons to form a bond (2+ charge shows us that).

This then shows us that Option 2, "B will give up two electrons to form bonds" is correct.

Answer:

B will give up two electrons to form bonds

Explanation:

Answer:

The sun will appear to rise and set more slowly

have a nice day! (^o^)

B. It will be slow because you will have to wait for natural processes to affect each area.

What is Ocean?

An ocean is a vast body of saltwater that covers more than 70% of the Earth's surface. Oceans are the largest bodies of water on our planet and are essential for supporting life on Earth. Oceans play a crucial role in regulating the Earth's climate, absorbing heat and carbon dioxide, and generating oxygen.

The impact of human activities on ocean shores zones, such as coastal development, pollution, and overfishing, can have long-lasting and sometimes irreversible effects on these ecosystems. Restoring or mitigating the impacts of human activities on ocean shores zones requires time and effort, as natural processes need to take place to restore the affected areas.

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Answer:

The answer is C) Gravity keeps all matter on Earth.

Explanation:

I took the test and this was correct!

(Not a fake answer like some, I promise!)

The 195 represent in the isotope notation represents the atomic mass.

Isotope notation is a way of representing atoms of a particular element that have the same number of protons but different numbers of neutrons. Isotopes are identified by their atomic mass, which is the sum of the number of protons and neutrons in the atom's nucleus.

In the isotope notation, the number that comes after the element's symbol represents the mass number of the isotope. In the case of 195Pt, "195" represents the mass number of the isotope, which is the sum of the number of protons and neutrons in the nucleus of the atom.

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It is the least reactive of the three elements listed.  The correct order of elements from most to least reactive is:

sodium, carbon, krypton.

Sodium is a highly reactive metal and readily forms compounds with many other elements. It reacts vigorously with water and air, which is why it is stored in oil to prevent contact with moisture or oxygen.

Carbon is less reactive than sodium but can still undergo reactions, such as combustion or oxidation. Krypton, on the other hand, is a noble gas and is chemically inert, meaning it does not react with other elements under normal conditions. Therefore, it is the least reactive of the three elements listed.

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The temperature (in °C) at the summit is mathematically given as

T=229.0C

Question Parameters:

the atmospheric pressure is 210.

mmHg and the air density is 0.429 g/L

the molar mass of air is 29.0 g/mol

Generally the equation for the Temperature   is mathematically given as

\(T=\frac{PV}{nR}\)

Therefore

T=\frac{0.27*1.0}{0.01468*0.821}

T=229.0C

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The molecular formula of acetylene is C₂H₂ and ethylene is C₂H₄.

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 shown by molecular formulas, and the bonds between the atoms in a molecule are shown by structural formulas. The empirical formula of naphthalene is C₁₀H₈ and benzene is C₆H₆.

The chemical formula of the reactants and products are:

The balanced reactions are:

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Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

Alcohol can swiftly cross the blood-brain barrier after it is ingested, having an impact on the brain and neurological system. Depending on the quantity and frequency of drinking, alcohol's effects on the brain can range from minor disturbances in judgment and coordination to more serious consequences including loss of consciousness and, in the worst circumstances, death.

Long-term changes in brain structure and function, such as cognitive impairment and a higher chance of developing specific neurological and mental illnesses, can also result from chronic alcohol consumption.

Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

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To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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Answer:

If by gas you mean oxygen it is O.

Answer:

In coordination chemistry, anation is the "replacement of the ligand water by an anion in a coordination entity." The term is however used more loosely to include displacement of any neutral ligand by an anion. The reverse reaction, displacement of an anionic ligand by water, is called aquation.

Explanation:

1. A metal and a nonmetal form an ionic compound while two non-metals form a covalent compound.

2) The number of particles that are equal to 1 mole is 6.02 x 10²³

3) The number of moles that are equal to 22.4 L of gas is 1 mole of gas

4) The number of moles that are equal to 6.02 x 10²³ molecules is 1 mole

5) The molar mass of each of the following and their states of matter are

The molar mass of a compound is the mass of 1 mole of a compound.

1 mole of a substance contains 6.02 x 10²³ particles.

For gas, 22.4 L of a gas is equal to 1 mole of the gas and contains  6.02 x 10²³ gas molecules.

The molar mass of the given compounds is calculated from the sum of the atomic masses of the elements in the compound.

The mass of the elements and compounds are as follows;

Moar mass of Fe = 56 g/mol;

Molar mass of CuSO₄.5 H₂O = 63.5 + 32 + (4 * 16) + 5 ( 2 * 1 + 16)

Molar mass of CuSO₄.5 H₂O = 249.5 g/mol

Molar mass of NaCl = 35.5 + 23

Molar mass of NaCl = 58.8 g/mol

Molar mass of CO₂ = 12 + (16 * 2)

Molar mass of CO₂ = 44 g/mol

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According to the Avogadro's number, there are 3.011×10²³ atoms in 0.5 mole of aluminium.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number, on substituting values in formula, 0.5×6.023×10²³=3.011×10²³ atoms.

Thus, there are 3.011×10²³ atoms in 0.5 mole of aluminium.

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Answer:

Asexual reproduction

Explanation:

Cells are able to re produce themselves without other cells needed. If cells need others to make more then how would that work and plus we wouldn't have the theory of cells existing.

Explanation:

1. boiling and melting point

2. electrical conductivity

3. Bond strength

4. bond length

A covalent bond consists of negative electrons that are shared in between atoms. Because of this bond, they possess and manifest physical abilities, including electrical pressure/conductivity and lower melting points compared to ionic compounds.