How many moles are in 8.8 x 1024 atoms of magnesium?

Answer:

hindi ko po gets pasyensya na po

Answer:

I believe its all above  

Explanation:

Fire on grasslands keep the tress from overtaking the grasses on fire. They can thereby preserve biodiversity. Fire on grassland helps contains coarse grass only. Therefore, all of the above is correct.

The addition of nutrients to the soil, the facilitation of easier grazing by herd animals, and the inhibition of the establishment of invasive plant species all contribute to the health and sustainability of grasslands.

The grassland ecology benefits from the natural occurrence of fire since it keeps it strong and healthy. It increases the soil's temperature and lessens the annual buildup of leaf litter, allowing sunshine to enter.

Warming the soil stimulates microbial activity, which liberates nutrients from decomposing plant matter that are essential for the growth of new grasses and flowers. All the given points are in direct or indirect way help the grassland.

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Answer:

Explanation:

Answer: the molality of this solution is 2.00 mol/kg.

Explanation:

The question requires us to calculate the molality of a solution prepared with 63.0g of nitric acid and 0.500 kg of water.

The molality of a solution is defined as the amount of solute, in moles, in one kilogram of solvent:

To calculate the molality of the solution presented by the question, we must calculate the amount of moles of HNO3 in 63.0 g of this substance.

The molar mass of HNO3 can be obtained from the atomic masses of hydrogen (H, 1.01 u), nitrogen (N, 14.0 u) and oxygen (O, 16.0 u):

molar mass (HNO3) = (1 * 1.01) + (1 * 14.0) + (3 * 16.0) = 63.0 g/mol

Therefore, knowing the molar mass of HNO3 we can say that there is 1.00 mol of HNO3 in 63.0 g of this compound. Thus, n(solute) = 1.00 mol and m(solvent) = 0.500kg (the mass of water as given by the question), and we can calculate the molality of the solution as:

The molality of a solution that contains 63.0g of HNO3 in 0.500kg of water is 2.00 mol/kg (or 2.00 molal).

Answer:

I am really sorry but i really don't no

Answer:

What is your question?

Explanation:

Can you give more context to ur question?

Water binds to it with a strong attraction through hydrogen bonds. Water is very cohesive as a result.

Which of the following factors contributes most directly to water's cohesive quality?

Water molecules adhering to one another is referred to as cohesion, a property of water. Both of the above characteristics result from hydrogen bonding and the way it arranges the water molecules.

Therefore, Hydrogen bonds between water molecules and other types of molecules.

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Answer:

ΔE = 150 J

Explanation:

From first law of thermodynamics, we know that;

ΔE = q + w

Where;

ΔE is change in internal energy

q is total amount of heat energy going in or coming out

w is total amount of work expended or received

From the question, the system receives 575 J of heat. Thus, q = +575 J

Also, we are told that the system delivered 425 J of work. Thus, w = -425 J since work was expended.

Thus;

ΔE = 575 + (-425)

ΔE = 575 - 425

ΔE = 150 J

After applying the first law of thermodynamics, the change in the internal energy of the system is 150 Joules.

Given the following data:

To find the change in the internal energy of the system, we would apply the first law of thermodynamics.​

Mathematically, the first law of thermodynamics is given by the formula:

\(\Delta E = Q - W\)

Where;

Substituting the given parameters into the formula, we have;

\(\Delta E = 575 - 425\)

Change in internal energy, E = 150 Joules

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Biotechnology is the use of living organisms or other biological systems in the manufacture of drugs or other products or for environmental management, as in waste recycling: includes the use of bioreactors in manufacturing, microorganisms to degrade oil slicks or organic waste, genetically engineered bacteria to produce human hormones, and monoclonal antibodies to identify antigens.

Biotech offers the possibility of improving human health, the environment, and agriculture while creating more sustainable modes of production.

Answer:

x/2

Explanation:

X = 2 molecules of H2

For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.

I hope I'm understanding this question right.

By the concept of calculating moles ,it can br concluded that the no. of atoms of phosphorus in 8.80mol of copper(II) phosphate is=1.06\(x10^{25}\)

A mole is defined as amount of substance containing as many as elementary entities that are there in atoms of exactly 12 g of carbon-12.Therefore we can say,1 mole of copper(II) phosphate, Cu3(PO4)2, contains three moles of copper(II) cations and two moles of phosphate anions.

Again 1mole of phosphate anions contains one mole of phosphorus and four moles of oxygen.Considering all these informations we can conclude that:1 mole of copper(II) phosphate contains 2 moles of Phosphorus

Accordingle the sample contains=(8.80\(x\)2) moles of Phosphorus

                                    =(17.6\(x\)Avogadro's constant) atoms of  Phosphorus

                                    =(17.6\(x\)6.022\(x\)\(10^{23}\)) atoms of  Phosphorus

                                    =1.06\(x10^{25}\) [approx] no. of Phosphorus atoms

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In 8.80 moles of copper(II) phosphate, there are approximately 1.06 x 10²⁵ atoms of phosphorus.

The number of atoms of phosphorus in a given amount of a compound can be calculated using the concept of mole in chemistry. Copper(II) phosphate is Cu3(PO4)2, containing 2 moles of phosphorus (P) for every 1 mole of the compound. Avogadro's number (6.022 x 10²³) gives the number of atoms in one mole.

So, if there are 8.80 moles of copper(II) phosphate, there would be 2 × 8.80 moles of phosphorus. Multiplying this by Avogadro's number gives the total number of phosphorus atoms.

Therefore, the number of phosphorus atoms is 2 × 8.80 × 6.022 x 10²³ = 1.06 x 10²⁵ atoms of phosphorus.

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Answer:D

Explanation:it is true

Answer:

0.10 L

Explanation:

First we convert the 2.0 grams of solute (meaning sodium hydroxide) into moles, using its molar mass:

Then we can calculate the required volume of solution, using the definition of molarity:

The theoretical yield of the reaction is 1.13 g. The acid is the limiting reactant.

In a given chemical reaction, the theoretical yield can only be obtained from the balanced reaction equation. We have been given the balanced reaction equation in the question so we can work from there.

Number of moles of Cr =  0.50 g /52 g/mol = 9.6 * 10^-3 moles

Number of moles of acid =  0.75 g/98 g/mol = 7.7 * 10^-3 moles

Given that the reaction is 1:1, the limiting reactant would be the acid.

The theoretical yield is obtained from;

Number of moles of product * molar mass of product

We substitute to obtain;

7.7 * 10^-3 moles * 147 g/mole (since the reaction is 1:1)

= 1.13 g

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Answer:

I t transfers from the ocean to the air, however the current is not as warm so less energy will transfer from the current to the air making ChrisstChurch cooler than usual.

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Answer:

Kr (molar mass=83.80 g/mol)

Explanation:

as it is the heaviest i think

A bumper car stops moving when it strikes another car because : ( B ) Its energy is transferred to the other car

Following the law of conservation of energy, energy is neither destroyed or created but converted from one form to another. when the car collides with another car, the Kinetic energy possessed by the initial car will be transferred to the new car.

when a car possess potential energy the car will be at rest that is why the bumper car stops moving after collision

Hence we can conclude that A bumper car stops moving when it strikes another car because its energy is transferred to the other car.

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Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. In order to form an ion, a Group 2 element will loose two electrons and form a cation.

Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.

Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.  In order to form an ion, a Group 2 element will loose two electrons and form a cation.

Therefore, in order to form an ion, a Group 2 element will

loose two electrons and form a cation.

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The ranking of boiling point is based on the molecular weight and intermolecular forces between molecules.

2 central carbons, each with CH3 bonded to them. A central C has H bonded left, above, behind to the right, and in front to the right. A carbon chain with 5 central carbons, with CH3 bonded to the first, second, and last carbons in the chain. 2 central carbons with CH3 bonded to the outside, and CH3 bonded to the leftmost inside carbon.

In this case, all compounds are hydrocarbons, meaning they are non-polar molecules and exhibit van der Waals forces. However, the length of the carbon chain and the arrangement of atoms in the molecule affect the magnitude of these forces.

The first compound has only two carbons and exhibits weak intermolecular forces, so it has the lowest boiling point. The second compound has three carbons and a more complex arrangement of atoms, resulting in slightly stronger van der Waals forces and a higher boiling point.

The third compound has a longer carbon chain, which increases the molecular weight and results in stronger intermolecular forces, giving it a higher boiling point than the previous two. The fourth compound has the longest carbon chain and has multiple branches, which increases the surface area of the molecule and the strength of the intermolecular forces, giving it the highest boiling point.

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Answer:

The answers are 4, 2, 3, 1

Explanation:

Answer: metal turn orange and weaker as it gets oxidised

Explanation:

Answer:

i would have to say oxygen .

Explanation:

Avogadro's law states that in a mole of any substance, there are \(6.022 \times 10^{23}\) atoms. This means that in the given sample, there are

\(\frac{6.075 \times 10^{26}}{6.022 \times 10^{23}}=1008.8010627 \text{ mol}\)

So, the atomic mass of sulfur dioxide is

\(32.06+2(15.9994=64.0588 \text{ g/mol}\)

Therefore, the mass is:

\((64.0588)(1008.8010627)=\boxed{64620 \text{ g (to 4 sf)}}\)

Answer:

A satellite campus or branch campus or regional campus is a campus of a university or college that is physically at a distance from the original university or college area. This branch campus may be located in a different city, state, or country, and is often smaller than the main campus of an institution.

The difference in first ionization energy between Xe and Rn can be explained by the combination of differences in electron configuration and shielding effect.

The energy needed to remove one electron from an atom or ion is known as the initial ionization energy. The number of electrons in the atom and the arrangement of those electrons are two parameters that affect an element's ionization energy.

The electron configurations of the elements Rn (Radon) and Xe (Xenon) are similar, although Radon contains more electrons than Xenon. In contrast to the outermost electrons of Xenon, the outermost electrons of Radon are bound by the nucleus more securely and are therefore more difficult to remove. Because Xe has a lower initial ionization energy than Rn, it is simpler to remove one electron from Xe than from Rn.

Additionally, the shielding effect of inner electrons also affects the ionization energy. The shielding effect refers to the ability of inner electrons to screen or reduce the attraction between the nucleus and outer electrons. In Xe, there are more inner electrons than in Rn, which provides a stronger shielding effect, further reducing the ionization energy of Xe.

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Answer:

They run out of fuel

Some heat radiates out

High pressure gases move the piston

Answer:

3.16 × 10²¹ atoms MgCl₂

General Formulas and Concepts:

Explanation:

Step 1: Define

0.500 g MgCl₂ (Magnesium Chloride)

Step 2: Define conversion

Molar Mass of Mg - 24.31 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol

Avagadro's Number: atoms

Step 3: Dimensional Analysis

\(0.500 \ g \ MgCl_2(\frac{1 \ mol \ MgCl_2}{95.21 \ g \ MgCl_2} )(\frac{6.022 \cdot 10^{23} \ atoms \ MgCl_2}{1 \ mol \ MgCl_2} )\) = 3.16248 × 10²¹ atoms MgCl₂

Step 4: Check

We are given 3 sig figs. Follow sig fig rules.

3.16248 × 10²¹ atoms MgCl₂ ≈ 3.16 × 10²¹ atoms MgCl₂