The charge on oxide is 0-2

What is it for monoxide

Answer:

To calculate the number of moles in 64.9 grams of SO₂, you need to know the molar mass of SO₂. The molar mass of SO₂ is the sum of the atomic masses of sulfur (S) and two oxygen (O) atoms. The atomic mass of S is 32.06 g/mol and the atomic mass of O is 16.00 g/mol. So, the molar mass of SO₂ is 32.06 + 2 * 16.00 = 64.06 g/mol.

Now that we know the molar mass of SO₂, we can calculate the number of moles in 64.9 grams of SO₂ by dividing the mass by the molar mass: 64.9 g / 64.06 g/mol = 1.01 mol.

So, there are approximately 1.01 moles in 64.9 grams of SO₂.

Explanation:

Answer:

its a chemical Reaction

Explanation:

Answer:

Asexual reproduction is faster than sexual reproduction

Answer:

Asexual reproduction is faster than sexual reproduction which is d

Explanation:

The molar mass of Mg3(PO4)2 can be calculated by adding the atomic masses of magnesium (Mg), phosphorus (P), and oxygen (O) atoms in the compound.

Molar mass of Mg = 24.31 g/mol
Molar mass of P = 30.97 g/mol
Molar mass of O = 16.00 g/mol

Mg3(PO4)2 has three Mg atoms, two PO4 groups, and each PO4 group contains one P atom and four O atoms. Therefore, the molar mass of Mg3(PO4)2 can be calculated as follows:

3 x Mg molar mass + 2 x (P molar mass + 4 x O molar mass)
= 3 x 24.31 g/mol + 2 x (30.97 g/mol + 4 x 16.00 g/mol)
= 3 x 24.31 g/mol + 2 x (30.97 g/mol + 64.00 g/mol)
= 72.93 g/mol + 2 x 94.97 g/mol
= 72.93 g/mol + 189.94 g/mol
= 262.87 g/mol

Therefore, the molar mass of Mg3(PO4)2 is 262.87 g/mol. The closest answer choice is 262.9 g.

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Answer:

0.1169g .

Explanation:

1. Multiply the concentration (0.5 mols/Liters) by the volume of solution you want (0.5 Liters) to find the moles of NaCl you need. 2. Multiply the moles of NaCl by its molar mass (58.44 g/mol) to find the grams of solute needed.

Answer:

Graph? Question is incomplete.

Answer:

sorry i have no answer know

Answer:

what is ur question hopefully i can help : )

Explanation:

Answer:

It takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules. - KA

Answer:

736 torr.

Explanation:

As you can see, NH₂OH structure only has simple bonds.

Answer: letter 'c', no double bounds.

Explanation:

The structure (e.g., extent of branching) determines how the individual polymer molecules can orient (or "pack") in the solid state. This, in turn, influences physical properties such as density, crystallinity, melting point, and strength.Thus this is the relationship between the molecular structure of polypropylene and its macroscopic properties such as strength, flexibility, electrical conductivity, etc

Specific Heat of the metal will be = 4.184 J/C

Mass of metal = 28 g

Mass of water = 28 g

Rise in temperature = 23.8 - 19 = 4.8 C

Specific heat of water = 4.184 J/C

Let the specific heat of metal =S

The heat released by metal =mass of metal * specific heat of metal * Change in temperature

\(& =28\times S \times 4.8{ }^{\circ} \mathrm{C} \\& =134.4 S^{\circ} \mathrm{C}\)

Heat absorbed by water = mass of water x specific heat of water x change in temp. \(=28 \times 4.184 \times 4.8=562.3296 J\)

Using the principal of Caloriemeter:

We have, Heat released by metal = Heat absorbed by water

134.4S = 562.3296 =>4.184 J/C

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The correct question should be:

if we are heated a metal with 28g mass then we add it in a coffee cup with 28g water. the water temperature raised from 19 degree to 23.8 oc. what was the specific heat of the metal. the water specific heat of water is 4.184 j/g oc.

Resonance structures are not necessarily lower in energy than their contributing structures.

Resonance structures are hypothetical structures that represent the delocalized electron density of a molecule or ion. They are obtained by drawing different Lewis structures that differ only in the placement of electrons.

These structures are typically represented by double-headed arrows between them to show that the actual structure of the molecule or ion is a hybrid of all the contributing structures.

The resonance hybrid has a lower energy than any of the contributing structures because it represents the average of all the possible resonance structures. However, each contributing structure may have its own unique energy, and some structures may be higher or lower in energy than others.

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Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon. A neutral calcium atom has 20 electrons, while a calcium atom that has lost two electrons will have 18 electrons, and a neutral argon atom also has 18 electrons.

Calcium has two valence electrons in its last energy level.

It is easier to lose two electrons to adquire stability in order to achieve the noble gas configuration.

Thus, calcium will lose two electrons to get a full outer shell.

The quantity of electricity : 2 Faraday = 193000 Coulomb

Given

2 moles of electrons

Required

The quantity of electricity

Solution

According to Faraday, the amount of current flowing in the electrolysis cell is closely related to the amount of substance that reacts

1 Faraday is the amount of electricity that is passed in the electrolysis cell to obtain 1 mole of electrons. 1 mole of electrons is equivalent to an electric charge of 96500 Coulombs.

The conversion / relationship can be stated as follows:

1 Faraday = 1 mole of electrons = 96500 Coulombs

1 faraday = coulomb / 96500

Can be formulated

Coulomb = Q = I. t so:

\(\large {\boxed {\bold {1 \: Faraday \: = \: \dfrac {i \: x \: t} {96500}}}}\)

so for 2 moles electrons :

= 2 x 96500 C

= 193000 C

= 2 Faraday

Answer:

Number of Significant Figures: 4

The Significant Figures are 5 4 3 9

Explanation:

A reaction in equilibrium with an equilibrium constant of 85.0 can be used to explain the extraction of iodine from water using the nonpolar solvent CCl4. 3.14 x 10-6 mol of I2 are still present in the aqueous layer following extraction.

Iodine extraction involves taking the element out of one medium and putting it in another. Iodine is an element that occurs naturally and can be found in a variety of states, including as a gas, solid, or solution. Iodine's solubility in a solvent is influenced by the solvent's composition and the iodine's form. Iodine is soluble in water, although it is more soluble in nonpolar solvents like carbon tetrachloride (CCl4). This means that after shaking a solution of water and CCl4, iodine will prefer to collect in the nonpolar solvent. A reaction in equilibrium with an equilibrium constant can be used to model the extraction of iodine. After extraction, the amount of iodine left in the water layer can be determined.

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To move solid and liquid wastes through pipes, drainage and waste systems depend on gravity and pressure.

Drainage and waste systems are designed to efficiently remove and transport solid and liquid wastes from residential, commercial, and industrial buildings. These systems rely on two main mechanisms: gravity and pressure. Gravity plays a crucial role in drainage systems. It utilizes the natural downward flow of liquids and solids due to gravity's force. Waste pipes are installed with a slope to allow for the smooth flow of waste materials. The force of gravity pulls the waste downward, allowing it to move through the pipes and ultimately reach the sewage system or septic tank. Pressure is another important factor in waste systems, especially in situations where gravity alone is not sufficient. Pressure-based systems, such as sewage ejector pumps, use mechanical means to create pressure that propels waste materials through the pipes. These pumps generate enough force to push the waste against gravity and overcome any obstacles or uphill sections in the piping network. Pressure-based systems are commonly used in basements, areas below the main sewer line, or locations where a higher elevation is required for proper waste disposal.  Together, gravity and pressure work in tandem to ensure the effective and efficient movement of solid and liquid wastes through drainage and waste systems, allowing for the safe and sanitary disposal of waste materials.

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It will take approximately 49,580 years for 80% of the plutonium-239 isotope to decay.

To determine the time required for 80% of the plutonium-239 isotope to decay, we can use the concept of half-life. The half-life of a radioactive isotope is the time it takes for half of the initial amount of the isotope to decay.

Given that the half-life of plutonium-239 is 24,360 years, we can calculate the number of half-lives required for 80% decay. Since each half-life reduces the amount of the isotope by half, we need to find how many times we need to divide 10 g (the initial amount) by 2 to reach 80% of the original amount.

Let's calculate:

Initial amount = 10 g

Amount after one half-life = 10 g / 2 = 5 g

Amount after two half-lives = 5 g / 2 = 2.5 g

Amount after three half-lives = 2.5 g / 2 = 1.25 g

Amount after four half-lives = 1.25 g / 2 = 0.625 g

We can see that after four half-lives, the amount remaining is less than 20% of the initial amount. Since each half-life is 24,360 years, the time required for four half-lives is approximately 97,440 years. Therefore, it will take approximately 49,580 years (97,440 years - 47,880 years) for 80% of the plutonium-239 isotope to decay.

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4 liters of the 70% solution are required by the chemist.

8 liters of saline solution divided by 25%

Saline solution at 25% = 0.25 x 8 = 2 liters

Let there be x liters of saline solution at 70%.

Salt = 8 plus x

40% of salt is equal to 25% of saline solution plus 70% of saline solution.

2 + (70/100)x = (40/100)(8 + x)

2 + 0.7x = 0.4(8 + x)

2 + 0.7x = 3.2 + 0.4x

0.7x - 0.4x = 3.2 - 20.3

x = 1.2

x = 1.2 / 0.3

x = 4

4 liters of the 70% solution are required by the chemist.

The following equation can be used to determine the volume or concentration of a concentrated or diluted solution: M1V1 = M2V2.

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Answer:

gravitational force.

Answer:

The answer is in this link

Explanation:

https://i.makeagif.com/media/7-13-2016/iEDABX.mp4

Identifying the ions in a solution typically involves performing various chemical tests or experiments, such as conductivity measurements, flame tests, precipitation reactions, or pH measurements.

Conductivity measurements can identify the presence of ions that conduct electricity in the solution. Flame tests involve burning a small amount of the solution and observing the color of the flame, which can indicate the presence of certain metal ions. Precipitation reactions involve adding a reagent to the solution that can form an insoluble solid with a particular ion, which can be identified by the color, shape, or size of the precipitate. pH measurements can provide information about the acidity or basicity of the solution, which can help identify acidic or basic ions.

Overall, determining the ions in an unknown solution requires performing appropriate chemical tests or experiments and interpreting the results based on the properties of the ions and the reactions involved.

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Answer:

Released into the atmosphere

Explanation:

The carbon that the plant had been storing when it was alive, would be released upon death into the soil

Answer:

B, increases rate of collisions

Explanation: