How many grams of NiNO can be produced if 35.1 g of ammonium nitrate and 552 g of sodium phosphate react?

Answer:

3.29 grams

Explanation:

This is found by multiply 2.35 L by 1.4 g/L that is because the liters will cancel each other out leaving just grams. [tex]\frac{g}{L} * \frac{L}{1}[/tex]

The temperature of the sample in degrees Celsius is 358.14°C.

The temperature of a substance can be calculated by using the following ideal gas law expression;

PV = nRT

Where;

According to this question, 3.24 mol of an ideal gas has a pressure of 2.19 atm and a volume of 76.67 L. The temperature can be calculated as follows;

2.19 × 76.67 = 3.24 × 0.0821 × T

167.9073 = 0.266004T

T = 167.9073/0.266004

T = 631.14K

T {°C} = 631.14 - 273 = 358.14°C

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According to the information, we can infer that the difference between photographs 1 and 2 originate from the translation of the Moon around the earth (option C).

To explain the difference between both images we must take into account the movement patterns of the earth and the moon. In the case of the earth, it has 2 main movements, which are rotation on its own axis and translation around the sun.

On the other hand, the moon has a translational movement around the earth, which is what causes the different lunar phases. This motion causes the moon to appear partially shadowed from the earth because the earth blocks the sunlight.

Based on the above, we can infer that the correct answer is option C because this phenomenon is caused by the translation of the moon.

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The amount of volume of KOH solution that should be added to make 500mL of a 0.300M solution is 200mL.

The volume of a solution given the concentration can be calculated using the following expression;

CaVa = CbVb

Where;

According to this question, we are to calculate how many mL of a 0.75 M OH solution that should be added to a 500 mL flask to make 500 mL of a 0.300 M KOH solution.

0.75 × Va = 500 × 0.3

0.75Va = 150

Va = 150/0.75

Va = 200mL

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The balanced chemical equation for the electrolysis of water is:

2H2O → 2H2 + O2

This equation shows that for every two moles of water that are electrolyzed, one mole of oxygen gas is produced. To solve this problem, we need to first convert the given mass of water (83.7 grams) to moles of water.

The molar mass of water (H2O) is:

2(1.008 g/mol H) + 15.999 g/mol O = 18.015 g/mol

So, 83.7 grams of water is equal to:

83.7 g / 18.015 g/mol = 4.646 mol H2O

Next, we need to determine how many moles of oxygen gas will be produced when 4.646 moles of water are electrolyzed. Since the mole ratio of water to oxygen is 2:1, we can use the following proportion:

2 mol H2O : 1 mol O2 = 4.646 mol H2O : x mol O2

Solving for x, we get:

x mol O2 = (1 mol O2 / 2 mol H2O) * 4.646 mol H2O = 2.323 mol O2

Finally, we can convert the moles of oxygen gas produced to grams using the molar mass of oxygen:

2.323 mol O2 * 32.00 g/mol O2 = 74.3 g O2

Therefore, 83.7 grams of water will produce 74.3 grams of oxygen gas by electrolysis.

Johannes Brsted and Thomas M. Lowry, two chemists, identified the Bromsted-Lowry acids and bases as a particular kind of acid-base reaction in 1923.

Acids are substances that give a base a proton (H+), whereas bases are substances that take a proton from an acid. In a Bromsted-Lowry acid-base reaction, the acid gives the base a proton in order to create the conjugate base and the conjugate acid, two new compounds.

Nitric acid (HNO3), sulfuric acid (H2SO4), and hydrochloric acid (HCl) are a few examples of acids. Sodium hydroxide (NaOH), ammonium hydroxide (NH4OH), and potassium hydroxide (KOH) are a few examples of bases.

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The mass of Na₃PO₄ formed during the reaction is 328 g.

The balanced chemical equation for the reaction is:

[tex]3NaOH + Na_3PO_4 - > 3Na_2PO_4 + H_2O[/tex]

From the equation, we can see that 3 moles of NaOH produce 1 mole of Na₃PO₄.

Given that 2.0 moles of Na₃PO₄ is produced, we can set up a proportion to find the amount of NaOH required:

3 mol NaOH / 1 mol Na₃PO₄ = x mol NaOH / 2.0 mol Na3PO4

Solving for x, we get:

x = (3 mol NaOH / 1 mol Na₃PO₄) × (2.0 mol Na₃PO₄ / 1) = 6.0 mol NaOH

So, 6.0 moles of NaOH are required to produce 2.0 moles of Na₃PO₄.

To find the mass of Na₃PO₄ produced, we can use its molar mass:

mass = moles × molar mass = 2.0 mol × 164 g/mol = 328 g

Therefore, the mass of Na₃PO₄ formed during the reaction is 328 g.

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Answer:

Answer:

D

Explanation:

to keep seeds safe and make them easier to spread

Answer:

D. to keep seeds safe and make them easier to spread

Explanation:

The main reason plants grow fruit is to aid in the protection and spreading of seeds. The fruit protects the seeds and also helps to spread them. Many fruits are good to eat and attract small animals, such as birds and squirrels, who like to feed on them. The seeds pass through them unharmed and then get spread through their droppings. So, the correct answer would be D.

The number of molecules of BF₃ present in 2 grams of BF₃ is 1.776×10²² molecules (1st option)

We'll begin by calculating the number of mole of 2 grams of BF₃. Details below:

Mole = mass / molar mass

Mole of BF₃ = 2 / 67.81

Mole of BF₃ = 0.02949 mole

Finally, we shall determine the number of molecules of BF₃. This is shown below:

Avogadro's hypothesis suggest that:

1 mole of BF₃ = 6.022×10²³ molecules

Therefore,

0.02949 mole of BF₃ = 0.02949 × 6.02×10²³

0.02949 mole of BF₃ = 1.776×10²² molecules

Thus, the number of molecules of BF₃ is 1.776×10²² molecules (1st option)

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For P₂O₅ the intermolecular forces such as van der Waals forces, dipole-dipole interactions, and hydrogen bonding must be overcome.

For HI the intermolecular forces that must be overcome are as van der Waals forces, dipole-dipole interactions, and hydrogen bonding.

P₂O₅ is a covalent compound and it is solid. To convert P₂O₅ from a solid to a gas, intermolecular forces such as van der Waals forces, dipole-dipole interactions, and hydrogen bonding must be overcome.

HI is a covalent compound that is a gas at room temperature and pressure. To convert HI from a liquid to a gas, intermolecular forces such as van der Waals forces, dipole-dipole interactions, and hydrogen bonding must be overcome.

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The value of H (in kJ) when 5.10 g of H2(g) is formed is 326 kJ (option B).

The given reaction is: CH3OH(I) —> CO(g)+2H2(g)

From the given value of H, we know that when one mole of CH3OH reacts, 128.1 kJ of heat energy is absorbed.

The molar mass of H2 is 2 g/mol. So, 5.10 g of H2 is equivalent to 5.10/2 = 2.55 moles of H2.

From the balanced equation, we can see that two moles of H2 are produced for each mole of CH3OH that reacts.

So, 2.55 moles of H2 are produced by 1.275 moles of CH3OH reacting (2.55/2).

Therefore, the amount of heat energy absorbed when 1.275 moles of CH3OH reacts can be calculated as:

Q = n x ΔH = 1.275 mol x 128.1 kJ/mol = 163.28 kJ

Since this amount of heat energy is absorbed when 1.275 moles of CH3OH reacts, to find the amount of heat energy absorbed when 2.55 moles of H2 is formed, we can simply double the value of Q:

Q = 2 x 163.28 kJ = 326.56 kJ

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The molar enthalpy for the reaction 4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g) is 266.4 kJ/mol.

The molar enthalpy is determined from Hess's law as follows:

Equation 1 x2:

2 N₂ (g) + 2 O₂ (g) → 4 NO (g) ∆H° = 361.2 kJ/mol

Equation 3 x3, :

6 H₂ (g) + 3 O₂ (g) → 6 H₂O (g) ∆H° = -1451.1 kJ/mol

Equation 2 x -4:

-8 N₂ (g) - 12 H₂ (g) → -8 NH₃ (g) ∆H° = 367.2 kJ/mol

Adding the equations together:

-6 N₂ (g) - 6 H₂ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g) - 8 NH₃ (g) ∆H° = 266.3 kJ/mol

Multiplying the equation above by -1/2:

3 N₂ (g) + 3 H₂ (g) - 5/2 O₂ (g) → -2 NO (g) - 3 H₂O (g) + 4 NH₃ (g) ∆H° = -133.2 kJ/mol

Multiplying the above equation by -2:

4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g) ∆H° = 266.4 kJ/mol

This is the molar enthalpy of the given reaction

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The percent difference between the first two trials is 8.3% and final outcome would be an average molarity of 0.108 M.

To calculate the percent difference between the first two trials, use the formula:

% Difference = |(Value 1 - Value 2) / ((Value 1 + Value 2) / 2)| x 100%

% Difference = |(0.104 M - 0.113 M) / ((0.104 M + 0.113 M) / 2)| x 100%

% Difference = |-0.009 M / 0.1085 M| x 100%

% Difference = 8.3%

The percent difference between the first two trials is 8.3%.

To find the average molarity, add the three calculated concentrations together and divide by the number of trials:

Average Molarity = (0.104 M + 0.113 M + 0.108 M) / 3

Average Molarity = 0.108 M

Based on the lab procedures guidelines, the average molarity would be the most accurate representation of the unknown concentration of HCI. Therefore, the average molarity of 0.108 M would be the final result.

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Answer:

see in your book properly

The correct answer is D. to have eight electrons in their valence shells.

A covalent bond is a chemical relationship that requires the sharing of electrons between atoms to generate electron pairs. These electron couples are known as bonding pairs or sharing pairs.

Covalent bonding is the steady balance of attractive and repulsive forces between atoms when they share electrons.

Covalent Bond Types

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The theoretical yield of MgO for Trial 1 is 0.348 g, and for Trial 2 is 0.307 g. The percent yield of MgO for Trial 1 is 58.0% and for Trial 2 is 159.2%. The average percent yield of MgO for the two trials is 108.6%.

To calculate the theoretical yield of MgO, we need to use the balanced chemical equation for the reaction between magnesium (Mg) and oxygen (O2) to form magnesium oxide (MgO):

2Mg + O₂ → 2MgO

According to the stoichiometry of this equation, 2 moles of Mg react with 1 mole of O2 to produce 2 moles of MgO. Therefore, we need to determine the number of moles of Mg in each trial and use the mole ratio to find the theoretical yield of MgO.

For Trial 1:

The mass of Mg used is: 26.682 g - 27.012 g = 0.330 g

The molar mass of Mg is 24.31 g/mol, so the number of moles of Mg is:

0.330 g / 24.31 g/mol = 0.0136 mol Mg

According to the balanced equation, 2 moles of Mg produce 2 moles of MgO, so the theoretical yield of MgO is:

0.0136 mol Mg x (2 mol MgO / 2 mol Mg) x (40.31 g MgO/mol) = 0.348 g MgO

For Trial 2:

The mass of Mg used is: 26.987 g - 26.695 g = 0.292 g

The number of moles of Mg is:

0.292 g / 24.31 g/mol = 0.0120 mol Mg

The theoretical yield of MgO is:

0.0120 mol Mg x (2 mol MgO / 2 mol Mg) x (40.31 g MgO/mol) = 0.307 g MgO

To calculate the percent yield of MgO, we need to use the following formula:

Percent yield = (actual yield / theoretical yield) x 100%

For Trial 1:

The actual yield of MgO is: 27.214 g - 27.012 g = 0.202 g MgO

The percent yield of MgO is:

(0.202 g / 0.348 g) x 100% = 58.0%

For Trial 2:

The actual yield of MgO is: 27.183 g - 26.695 g = 0.488 g MgO

The percent yield of MgO is:

(0.488 g / 0.307 g) x 100% = 159.2%

To calculate the average percent yield of MgO for the two trials, we add the percent yields and divide by 2:

Average percent yield = (58.0% + 159.2%) / 2 = 108.6%

Therefore, the theoretical yield of MgO for Trial 1 is 0.348 g, and for Trial 2 is 0.307 g. The percent yield of MgO for Trial 1 is 58.0% and for Trial 2 is 159.2%. The average percent yield of MgO for the two trials is 108.6%.

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The mass of hydrogen gas produced, given that 525 mL of the gas was collected over water is 0.04 grams

First, we shall determine the mole of the dry hydrogen gas collected. Details below:

PV = nRT

0.9357 × 0.525 = n × 0.0821 × 298

Divide both sides by (0.0821 × 298)

n = (0.9357 × 0.525) / (0.0821 × 298)

n = 0.02 mole

Finally, we shall determine the mass of the hydrogen gas produced. Details below:

Mole = mass / molar mass

0.02 = Mass of H₂ / 2

Cross multiply

Mass of H₂ = 0.02 × 2

Mass of hydrogen gas, H₂ = 0.04 grams

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There are 15.4 equivalents of chloride ion present in the solution

We need to multiply the total number of moles of chloride ion in the solution by the number of equivalents.

The molar mass of NaCl is 58.44 g/mol, so 3.5 mol of NaCl contains :

3.5 mol NaCl x 2 mol Cl⁻/1 mol NaCl = 7 mol Cl⁻

Similarly, the molar mass of MgCl₂ is 95.21 g/mol, so 4.2 mol of MgCl₂ contains:

4.2 mol MgCl₂ x 2 mol Cl⁻/1 mol MgCl₂ = 8.4 mol Cl⁻

Therefore, the total number of moles of chloride ion in the solution is:

7 mol Cl⁻ + 8.4 mol Cl⁻ = 15.4 mol Cl⁻

By dividing the total number of moles by the number of equivalents per mole, we can finally determine how many equivalents of the chloride ion there are. There is one equivalent of the chloride ion per mole since it has a valency of -1.

15.4 mol Cl⁻ x 1 eq/mol = 15.4 eq

So there are 15.4 equivalents of chloride ion present in the solution.

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When water and oxygen react in the presence of an acid, the oxygen can oxidize the acid to produce a compound and release hydrogen ions.

Reaction:

The reaction is as follows and it's diagram mentioned below.

Acid + Oxygen + Water → Compound + Hydrogen ions

if we take the acid hydrochloric acid (HCl), the reaction with oxygen and water can produce the compound chlorine dioxide ([tex]ClO_{2}[/tex]) and hydrogen ions ([tex]H^{+}[/tex]):

2 HCl + [tex]O_{2}[/tex] + [tex]H_{2}O[/tex] → 2 [tex]ClO_{2}[/tex] + 4 [tex]H^{+}[/tex]

This type of reaction is known as an oxidation-reduction reaction or a redox reaction, where one species is oxidized (loses electrons) while the other is reduced (gains electrons).

What is redox reaction?

A redox reaction, also known as an oxidation-reduction reaction, is a type of chemical reaction in which there is a transfer of electrons between two species. One species undergoes oxidation, meaning it loses electrons, while the other species undergoes reduction, meaning it gains electrons.

Redox reactions are fundamental to many processes in nature and technology, including photosynthesis, respiration, corrosion, and energy production in batteries and fuel cells. They are also important in many industrial processes, such as the production of metals, chemicals, and pharmaceuticals.

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Answer:

3.8 ⋅*10^-14

Explanation:

The standard free energy change (ΔG°) for the reaction at 298 K can be calculated using the following equation:

ΔG° = ΣnΔGf°(products) - ΣnΔGf°(reactants)

where ΔGf° is the standard molar free energy of formation of the species and n is the stoichiometric coefficient.

ΔG° = [1×ΔGf°(Fe2O3)] - [1×ΔGf°(FeO) + 1×ΔGf°(Fe) + 1×ΔGf°(O2)]

ΔG° = [1×(-822.16 kJ/mol)] - [1×(-271.9 kJ/mol) + 1×(0 kJ/mol) + 1×(0 kJ/mol)]

ΔG° = -550.26 kJ/mol

The standard enthalpy change (ΔH°) and standard entropy change (ΔS°) can be used to calculate the standard free energy change (ΔG°) at any temperature using the following equation:

ΔG° = ΔH° - TΔS°

where T is the temperature in Kelvin.

ΔG° = ΔH° - TΔS° = (-550.26 kJ/mol) - (298 K)(-0.08996 kJ/K/mol) = -524.05 kJ/mol

Now, we can calculate the equilibrium constant (K) for the reaction at 298 K using the following equation:

ΔG° = -RTlnK

where R is the gas constant (8.314 J/K/mol) and T is the temperature in Kelvin.

-524.05 kJ/mol = -(8.314 J/K/mol)(298 K)lnK

lnK = -200.16

K = e^(-200.16) = 3.89×10^(-87)

Therefore, the value of K for the reaction at 25 °C is 3.89×10^(-87). Answer: 3.8 ⋅*10^-14.

Answer:

Explanation:

Here are the labels for each situation:

1.Usually conducts electricity & heat well - Metal (1)

2.At room temperature these are gases or liquids - Nonmetal (2)

3.Will lose valance electrons to form compounds - Metal (1)

4.Can be used as semiconductors - Metalloid (3)

5.Will gain valance electrons to form compounds - Nonmetal (2)

Answer:

Data collection is the act of obtaining information from diverse sources, and data analytics is the process of processing that information to derive practical insights.

Explanation:

Plants rely on their leaves to produce food through a process called photosynthesis. This involves converting light energy into organic compounds, like sugars, using chloroplasts that contain the pigment chlorophyll. By combining carbon dioxide and water with light energy, plants create glucose, which serves as an energy source and building material. Along with stomata, which help regulate gas exchange with the environment, the leaf acts as the plant's primary kitchen for food production.

The average mass of chromium is 52.1. Isotopic mass is defined as the average mass of all the isotopes of a specific element.

The average atomic mass of an element is referred to as the sum of the masses of its isotopes, each multiplied by its natural abundance which can be also explained as the decimal associated with the percent of atoms of that element that are of a given isotope. Average atomic mass is equal to f1M1 + f2M2 and so on. Hydrogen, chromium, lithium, cobalt, oxygen, boron, plutonium, and carbon are some examples.

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The most basic level of organization that can perform functions like converting food into energy is the cell.

The most basic level of organization that can perform functions like converting food into energy is the cell. Cells are the fundamental units of life and are capable of various functions, including metabolism, which involves converting food into energy through processes such as cellular respiration.

Cells can be found in all living organisms, from single-celled bacteria to complex multicellular organisms like plants and animals. Within a cell, various organelles such as mitochondria, which are responsible for energy production, carry out specialized functions to support the overall cellular function. Therefore, the cell is the smallest and most basic level of organization that is capable of performing functions like converting food into energy.

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B. To plot the data on a bar chart, draw a horizontal axis for metals and a vertical axis for time to complete the reaction. Then, draw bars for each metal that represent the amount of time required to complete the reaction. The height of the bars must match the time values ​​in the table.

C. No, Emilia was not correct in her forecast. According to the data, aluminum reacted 100 seconds faster than magnesium, which reacted in 50 seconds. Thus aluminum reacts more rapidly with hydrochloric acid than magnesium.

From most reactive to least reactive, the metals are as follows:

This order is consistent with the reactivity series, which is:

We are unable to estimate the reactivity of potassium, sodium, calcium, copper, silver, or gold from this experiment because those variables are not present in the data.

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The value of the equilibrium constant, K, for the reaction is 0.0049

The following data were obtained from the quesion:

The equilibrium constant for the reaction can be obtain as illustrated below:

Equilibrium constant = [B₂][AC] / [AB₂C]

Equilibrium constant = (0.007 × 0.0118) / 0.0168

Equilibrium constant = 0.0049

Thus, from the above calculation, the equilibrium constant, K for the reaction is 0.0049

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