Balance this equation by filling in the blanks for each coefficient. If there is no coefficient, please type the answer as 1. Mg + N2 ---> Mg3N2​

Answer:

Magnesium also reacts with nitrogen in the air to produce some magnesium nitride (Mg3N2). Safety: Do not look directly at the burning magnesium due to the intensity of the light. A dry-powder fire extinguisher should be available. Disposal: Once cooled the solid magnesium products can be thrown in the trash.

Explanation:

Answer:

112 kelvin

Explanation:

Volume = 4.00L

no of moles = 0.297

Pressure = 0.910 atm

Temperature = ?

Given our R (Molar gas constant ) = 0.082

Given the following parameters , This question is based on IDEAL GAS LAW.

IDEAL GAS LAW = PV =nRT

\(PV = nRT\\Lets make T the subject of the formula\\T = \frac{PV}{nR} T = \frac{ 0.910 * 4.00}{0.397*0.082 }\\\\T = 3.64/0.032554\\T = 111.8142\\T = 112 Kelvin\\\)

When 4.72 g of carbon react with excess oxygen gas to produce carbon dioxide, 609.6 kJ of energy will be released

This is because the reaction between carbon and oxygen is exothermic, meaning that energy is released when the reaction takes place.

For carbon, the energy released per mole is 717 kJ. For oxygen, the energy released per mole is 498 kJ.

The total energy released in the reaction, you need to multiply the energy released per mole by the number of moles of each element present in the reaction.

In this reaction, 4.72 g of carbon and excess oxygen are present. The atomic mass of carbon is 12.0107 g/mol, which means that 0.3948 moles of carbon are present in 4.72 g.

The atomic mass of oxygen is 15.999 g/mol, which means that 6.26 moles of oxygen are present.

Multiplying the energy released per mole of each element by the number of moles present in the reaction yields the total energy released.

This is equal to 717 kJ/mol x 0.3948 mol = 282.3 kJ, and 498 kJ/mol x 6.26 mol = 3127.48 kJ.

Adding these two values together gives the total energy released in the reaction,

which is equal to 3127.48 kJ + 282.3 kJ = 3409.78 kJ. Since 1 kJ = 1000 J, the total energy released in this reaction is 3409.78 kJ = 3.40978 x 10^6 J.

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Answer:

they have different wavelengths

Answer:

Due to the difference in the relative atomic masses and therefore, the molecular masses of Zn and Pb, one mole of Zn is about 3.2 times lighter than one mole of Pb

Explanation:

From the periodic table, we have;

The atomic number of zinc, Zn = 30

The atomic mass of zinc, Zn = 65.38 amu

The molar mass of zinc, Zn = 65.38 g/mol

The atomic number of lead, Pb = 82

The atomic mass of lead, Pb = 207.2 amu

The molar mass of lead, Pb = 207.2 g/mol

Therefore, whereby equal number of moles of Zn is lost and Pb is gained, we have;

Mass of 1 mole of Zn = 65.38 grams

Therefore, 1 gram of Zn = 1/65.38 moles = 0.0153 moles

0.12 grams of Zn = 0.12×0.0153 = 0.00184 moles of Zn

Given that equal number of moles of Zn and Pb are involved in the reaction, the number of moles of Pb gained = 0.00184 moles

The mass of Pb gained = Number of moles of Pb gained × Molar mass of Pb

The mass of Pb gained = 0.00184 × 207.2 = 0.38 g ≈ 0.4 g.

Amount of Pb gained = 0.43 g ≈ 0.4 g

The expected cash collections for July are 10,580 units.

To calculate the expected cash collections for July, we need to consider the credit sales made in different months and the collection pattern given in the information provided.

Here's the calculation step-by-step:

1. Calculate the credit sales for June, July, August, and September:

  - June: 8,300 units

  - July: 14,000 units

  - August: 16,000 units

  - September: 17,000 units

2. Determine the collection pattern for credit sales:

  - 40% of credit sales are collected in the month of the sale

  - 60% of credit sales are collected in the following month

3. Calculate the expected cash collections for July:

  - July credit sales: 14,000 units

  - July collections (40% of July sales): 14,000 units * 40% = 5,600 units

  - June collections (60% of June sales): 8,300 units * 60% = 4,980 units

4. Add the July and June collections:

  - Total expected cash collections for July: 5,600 units + 4,980 units = 10,580 units

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Answer:The crust

Explanation:

Answer:

Zinc is an element.

Explanation:

Compounds are composed of two or more elements

Answer:

element

Explanation:

zinc is an element with atomic number 30

Answer:

Explanation:

density = mass / volume

mass = 17.95 grams

volume = 17.97 - 15.50 mL = 2.45 mL = 2.45 cc

density = 17.95 /(2.45) = 7.327 grams / cc

(d). In the body, trans-fatty acids are metabolized more like saturated fats than like unsaturated fats" best describes a feature of cis-fatty acids and trans-fatty acids.  trans-fatty acids and cis-fatty acids have different features.

Trans-fatty acids have double bonds that are in the trans configuration, while cis-fatty acids have double bonds in the cis configuration. In nature, most double bonds are in the cis configuration, but the process of hydrogenation can convert cis-fatty acids to trans-fatty acids. The conversion of cis-fatty acids to trans-fatty acids is not inhibited by the presence of antioxidants, as they do not affect the chemical process of hydrogenation.

In the body, trans-fatty acids are metabolized more like saturated fats than like unsaturated fats. This is because trans-fatty acids have a linear structure that allows them to pack tightly together, making them solid at room temperature and less easily broken down by enzymes. This can lead to an increased risk of heart disease and other health problems. In contrast, cis-fatty acids have a bent structure that makes them more fluid and easier to break down in the body. Overall, it is important to limit consumption of trans-fatty acids in order to maintain good health.

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Answer:

the Name of NiBr2 is

Nickel(II) bromide

Compact fluorescent (CFL) bulbs compared to incandescent bulbs can offer a greater efficiency of lighting by utilizing less electricity. CFL bulbs usually last longer than incandescent bulbs. how CFL bulbs compare to incandescent bulbs is that CFL bulbs are more energy-efficient, last longer, and generate less heat than incandescent bulbs.

CFL bulbs can provide up to 75% energy savings compared to incandescent bulbs. It is because CFL bulbs use less energy to produce the same amount of light.                                                                                                                           how CFL bulbs compare to incandescent bulbs may be: Compact fluorescent bulbs (CFLs) and incandescent bulbs are two types of bulbs that have distinct features and characteristics. CFL bulbs and incandescent bulbs are compared based on their wattage, lifespan, environmental impact, and energy efficiency. When compared to incandescent bulbs, CFL bulbs can be considered to have better energy efficiency. CFL bulbs are considered to be four times more efficient than incandescent bulbs, consuming only 25% of the electricity required for the same amount of light. As a result, CFL bulbs can provide up to 75% energy savings compared to incandescent bulbs. It is because CFL bulbs use less energy to produce the same amount of light. CFL bulbs usually last longer than incandescent bulbs, meaning that they need to be replaced less frequently. CFL bulbs have a lifespan of 6,000 to 15,000 hours, while incandescent bulbs have a lifespan of about 1,000 hours. Due to their long-lasting nature, CFL bulbs are an environmentally friendly option because they reduce the amount of waste generated by light bulbs. CFL bulbs also generate less heat than incandescent bulbs. CFL bulbs are cooler than incandescent bulbs because they release less heat.

Furthermore, the heat generated by incandescent bulbs can cause issues, particularly in confined spaces or areas where the heat is unwanted. In contrast, CFL bulbs produce little heat, making them an excellent alternative for regions where temperature control is crucial. In conclusion, compared to incandescent bulbs, CFL bulbs are more energy-efficient, last longer, and generate less heat.

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The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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Answer:

0.086J/g°C

Explanation:

The following data were obtained from the question:

Mass (M) = 30g

Initial temperature (T1) = 10°C

Final temperature (T2) = 45°C

Change in temperature (ΔT) = T2 – T1 = 45°C – 10°C = 35°C

Heat (Q) released = 90J

Specific heat capacity (C) of wood =..?

We can obtain the specific heat capacity of the wood as follow:

Q = MCΔT

90 = 30 x C x 35

Divide both side by 30 x 35

C = 90/(30 x 35)

C = 0.086J/g°C.

Therefore, the specific heat capacity of the wood is 0.086J/g°C.

Answer:

Explanation:

Hawksbill turtles were identified as endangered due to water pollution. Chemical pollutants can weaken turtle's immune systems making them prone to diseases. Plastic packaging, nylon fishing lines etc can be eaten by turtles or they may get stuck in them resulting in death.

sorry this is the only details i can give

The solubility of the Ca(OH)2 would be greatly increased since the lower temperatures would result in a slower titration and the solution would have time to warm up.

What is titration?

When a reaction reaches neutralisation, which is sometimes signalled by a colour change, titration is the steady addition of one solution with a known concentration (referred to as a titrant) to a known volume of another solution with an unknown concentration. To be a primary or secondary standard, the so-called titrant must meet the appropriate criteria. Titration is a method for figuring out a solution's concentration in a wide sense.

One of the processes in the manufacture of silver nanoparticles involves gently combining sodium borohydride with silver nitrate in an ice bath to create yellow colloidal silver.

Since the titration would proceed more slowly at the lower temperatures and the solubility of the Ca(OH)2 would increase dramatically as the solution warmed, it was necessary to titrate the cold solution in the ice bath.

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Answer:

B. Cl₂ + NaBr → NaCl + Br₂

Explanation:

The single replacement chemical equation that is unbalanced is Cl₂ + NaBr → NaCl + Br₂.

A look at the equation and you will discover that the chlorine on the reactant side is not balanced with the one on the product side. The chlorine at the reactant side has 2 atoms of chlorine but just 1 atom of chlorine in the product side. Therefore, it is unbalanced.   Also, you will discover that the bromine on the reactant side is not balanced with the one at the product side. The bromine on the reactant side has 1 atom of bromine while at the product side, it has 2 atoms. Therefore, it is unbalanced.

For a chemical equation to be balanced, the number of atoms and molecules at the reactant side must be equal to the number of atoms and molecules at the product side.  A single replacement reaction takes place whenever there is a replacement of one element by another element in a compound during a chemical reaction.

Answer: Answer is: 1s22s22p5.

1) Electron configuration 1s²1p⁶2d², this is not reasonable because 1p and 2d oritals do not exist.

2) Electron configuration 1s²2s⁴2p⁶, this is not reasonable because s orbitals only contain 2 electrons.

3) Electron configuration 1s²2s²2p⁵ is of an element fluorine. Fluorine (F) has atomic number 9, which means it has 9 protons and 9 electrons.

4) Electron configuration 1s²2s²2d⁶, this is not reasonable because 2d orbitals do not exist.

Ionic bonds are a type of chemical bond that occurs between two atoms when one or more electrons are transferred from one atom to another.

Ionic Bond involves the electrostatic attraction between positively charged ions (cations) and negatively charged ions (anions) that are formed as a result of this electron transfer.

Here are a few examples of minerals that are classified as ionic compounds:

1. Sodium Chloride (NaCl): Commonly known as table salt, sodium chloride is a mineral formed by the ionic bonding between sodium cations (Na+) and chloride anions (Cl-).

2. Calcium Carbonate (CaCO₃): Calcium carbonate is a mineral found in various forms, including limestone, chalk, and marble. It is composed of calcium cations (Ca²⁺) bonded to carbonate anions (CO₃²⁻).

3. Potassium Feldspar (KAlSi₃O₈): Potassium feldspar is a group of minerals that includes orthoclase, microcline, and sanidine. It consists of potassium cations (K+) bonded to aluminum silicate anions (AlSi₃O₈).

4. Magnesium Sulfate (MgSO₄): Magnesium sulfate, also known as Epsom salt, is an ionic compound composed of magnesium cations (Mg²⁺) bonded to sulfate anions (SO₄²⁻).

5. Iron Oxide (Fe₂O₃): Iron oxide is a mineral category that includes compounds such as hematite and magnetite. It consists of iron cations (Fe³⁺) bonded to oxide anions (O₂⁻).

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If 1,1-dibromo-4-methylhexane is treated first with excess sodium amide and quenched with water, catalytic hydrogenation affords the final product is 4-methyl-1-hexene. Therefore, the correct option is D.

When 1,1-dibromo-4-methylhexane is treated with excess sodium amide, the bromine atoms are replaced with sodium atoms, resulting in the formation of 4-methyl-1-hexene.

The reaction can be represented as:

1,1-dibromo-4-methylhexane + 2 NaNH2 -> 2 NaBr + 1 molecule of 4-methyl-1-hexene + 2 NH3

Catalytic hydrogenation of 4-methyl-1-hexene will not change the position of the methyl group, and will result in the formation of 4-methylhexane. However, since the question specifies that the compound is first treated with excess sodium amide and quenched with water, we know that the intermediate product is 4-methyl-1-hexene.

Therefore, the correct IUPAC name for the final product is 4-methyl-1-hexene which corresponds to option D.

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Answer:

CH2: (1×12g/mol)+(2×1g/mol)=14 g/mol.

Answer:

2 different ways, color and acid

Explanation:

Copper and zinc powder can be separated based on the colours; copper metal is red and zinc is grey in colour. The other method is to dissolve zinc powder in an acid,then filter copper from zinc chloride, while copper don't react with the acid because it is low in the reactivity series than hydrogen.

Answer:

The Rutherford atomic model stated that an atom is mostly an empty space that consist of nucleus and electrons, where nucleus is positively charged and electrons are negatively charged.

But Rutherford atomic model missed to add the quantum mechanics or energy level for electrons. Rutherford was unable to make understand the planetary movement of electrons around nucleus and later Bohr's model explained it.

Hence,  Rutherford's model of the atom missed to explain the planetary movement of electrons around nucleus.

Answer:

False, the empirical formula denotes the smallest whole-number ratio of atoms in a compound

Explanation:

a molecular formula is the total number of atoms in the compound