state two differences between metals and non metals with respect to their
1 physical properties
2 chemical properties
​

Molecular nitrogen (N2) interacts with water and is sparingly soluble in water due to dispersion forces.

Dispersion forces, also known as London dispersion forces, are the weakest type of intermolecular forces and are caused by temporary dipoles that occur due to the random movement of electrons in molecules. These forces occur between all types of molecules, including nonpolar molecules like N2. Water is a polar molecule with a partial negative charge on its oxygen atom and a partial positive charge on its hydrogen atoms. However, nitrogen molecules are nonpolar and do not have a significant dipole moment. As a result, the interaction between N2 and water is primarily due to dispersion forces, which are relatively weak and result in N2 being sparingly soluble in water.

In contrast, molecules that are more polar, such as ammonia (NH3) or hydrogen chloride (HCl), can form hydrogen bonds with water and are more soluble in water as a result of these stronger intermolecular forces.

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MCQs as follows-

chlorophyll is the light-absorbing green coloured pigment that begins the process of photosynthesis, and Chloroplast is a membrane-bound organelle in green plant and algal cells that carries out photosynthesis and generates ATP for the use of plants.

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Answer:

1. He will sit in the back where the other person is not sitting. Second column, fourth row.

2. Marta will sit in the front where it is not far. First column, first row.  

Explanation:

Elvis being a shy individual and coming in first will seat to the left of the empty seat at the back while Martha who is tired will seat on left position on the first row

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Given :

Mass of foil , m = 1.68 g .

Density of foil , \(\rho=7.31\ g/cm^3\) .

To Find :

The thickness of the foil .

Solution :

Let , length and breadth is l and b respectively .

Also , height be h .

Volume is given by :

\(V=l\times b\times h\)

Density is given by :

\(\rho=\dfrac{m}{V}\\\\V=\dfrac{m}{\rho}\\\\l\times b\times h=\dfrac{1.68}{7.31}\\\\l\times b\times h=0.23\\\\h=\dfrac{0.23}{lb}\)

Therefore , thickness of the foil is \(\dfrac{0.23}{lb}\) .

Hence , this is the required solution .

The total mass of 4 tin is in grams is 580 grams and in kg is 0.58kg.

One tin of chopped tomatoes weight is 145 grams

and we have to calculate it for 4

so for 4

145*4 =580 grams

and we have to change it into kilograms so

580 /1000  = .58kg

By 1,000, divide the number of grams.

To convert from grams to kilograms, simply divide by 1,000 because there are 1,000 grams in every kilogram. If necessary, construct the equation using fractions. Put the number of grams over 1 and divide it by the conversion factor, which is 1 kg / 1,000 g. Your answer in kilograms will result from the cancellation of the grams. Remember to use the appropriate units to mark your response.

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According to the presentation, cattle are typically sent to a processing facility when they have reached the desired age and weight for slaughter and are ready for meat production.

Cattle are sent to a processing facility at a specific stage in their growth and development. The timing varies depending on factors such as breed, intended market, and production goals. Generally, cattle are raised until they reach a certain age and weight that is suitable for meat production. This ensures that the animals have developed enough muscle mass and have accumulated sufficient fat to produce high-quality meat. Once the cattle have reached the desired criteria, they are transported to a processing facility.

At the processing facility, the cattle undergo a series of steps to convert them into meat products for human consumption. These steps typically include stunning the animals to ensure a humane slaughter, bleeding them to drain the blood, skinning or dehairing, eviscerating, and dividing the carcasses into primal cuts. The meat is then further processed and packaged according to market demand. The entire process is carefully regulated to ensure food safety and quality standards are met.

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\(C_3H_6\)  has a double bond in its carbon skeleton. This is a true statement.

Carbon skeleton refers to the chain of carbon atoms that make up an organic molecule. The presence or absence of double bonds in the carbon skeleton affects the properties of the molecule and how it interacts with other molecules. In \(C_3H_6\), there are three carbon atoms arranged in a linear chain, with each carbon atom forming single covalent bonds with two hydrogen atoms. The remaining valence electrons on each carbon atom form a double bond between the first and second carbon atoms.

This double bond is responsible for the unsaturated nature of the molecule. \(C_3H_6\)is an example of a simple alkene, also known as propene. Its carbon skeleton and double bond make it a versatile molecule that can be used in various applications, including the production of plastics, rubber, and other materials.

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Answer:

7.5275 x 10^21

Explanation:

Answer:

\(\boxed {\boxed {\sf 3 \times 10^{21} \ atoms \ Hg}}\)

Explanation:

We are asked to find how many atoms are in 1 gram of mercury.

First, we convert grams to moles. We use the molar mass or the mass of 1 mole of a substance. These values are equivalent to the atomic masses on the Periodic Table, but the units are grams per mole instead of atomic mass units.

Look up mercury's molar mass.

We convert using dimensional analysis, so we create a ratio using the molar mass.

\(\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

We are converting 1 gram of mercury to moles, so we multiply the ratio by this value.

\(1 \ g \ Hg *\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

Flip the ratio so the units of grams of mercury cancel out.

\(1 \ g \ Hg *\frac{ 1 \ mol \ Hg} { 200.59 \ g \ Hg}\)

\(1 *\frac{ 1 \ mol \ Hg} { 200.59}\)

\(\frac{ 1} { 200.59} \ mol \ Hg\)

\(0.004985293385 \ mol \ Hg\)

Next, we convert moles to atoms. We use Avogadro's Number or 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units) in 1 mole of a substance. In this case, the particles are atoms of mercury.

We will use dimensional analysis and set up another ratio.

\(\frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

Multiply by the number of moles we calculated.

\(0.004985293385 \ mol \ Hg * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

The units of moles of mercury cancel.

\(0.004985293385 * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 }\)

\(3.00214368 \times 10^{21} \ atoms \ Hg\)

The original measurement of grams has 1 significant figures, so our answer must have the same. For the number we calculated, that is the ones place. The 0 in the tenths place tells us to leave the 3 in the ones place.

\(3 \times 10^{21} \ atoms \ Hg\)

There are approximately 3×10²¹ atoms of mercury in 1 gram of mercury.

The statement "Bond polarity and molecular shape determine molecular polarity, which is measured as a dipole moment" is true because  Bond polarity and molecular shape are crucial factors in determining the overall molecular polarity, which is quantified as a dipole moment

Bond polarity refers to the uneven distribution of electrons in a covalent bond, where one atom has a greater electronegativity than the other. This results in a partial positive charge on one end of the bond and a partial negative charge on the other end.

Molecular polarity is determined by the sum of all bond polarities and the overall shape of the molecule. In a symmetrical molecule, the bond polarities cancel each other out, resulting in a nonpolar molecule with no dipole moment. In an asymmetrical molecule, the bond polarities do not cancel out, resulting in a polar molecule with a dipole moment.

The dipole moment is a measure of the magnitude of the molecular polarity, and it is represented by a vector pointing from the negative end to the positive end of the molecule. It is measured in Debyes (D) and is influenced by both the bond polarity and the molecular shape.

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while carrying out a vacuum filtration with organic materials  these things should be kept in mind always;

1. melting point should be estimated by quick heating.

2. melting should be observed carefully by supplying slow heating.

3. careful measurement should be recorded during filtration.

vacuum filtration is also known as suction filtration used for separating the solid particles from the liquids by applying a driving force that pulls the liquid from the filter and the solid remains outside the filter. examples of vacuum filtration are making tea as we can separate tea leaves from tea by using a strainer in a cup.

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Adhere to traffic regulations and guidelines throughout the process.

To design a traffic light system for an intersection using Multisim software and calculus, follow these steps. First, define the intersection and determine traffic flow. Next, establish the traffic light phases based on the traffic patterns. Use calculus to calculate the durations of each phase, considering factors like traffic volume and pedestrian crossing times. Create an optimization problem, setting an objective function to minimize delays and congestion.

Solve the optimization problem using calculus techniques and numerical methods. Implement the optimized timings in Multisim to simulate the traffic light system. Evaluate the simulation results, refine the timings if needed, and consider factors such as pedestrian safety and emergency vehicle prioritization. Adhere to traffic regulations and guidelines throughout the process.

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Despite being buried at Stonehenge, the "Amesbury Archer" was most likely born in what is now Germany or Switzerland, according to strontium isotope analyses of his bones.

One of the most important details concerning the Archer, according to Wessex Archaeology, is that he was a native of the Alps. He most likely originated in what is now Switzerland. The peculiar Beaker pottery and artefacts that started to show up in Britain about the time of the Archer were known to archaeologists for a long time as being from Europe, providing evidence of trade and cultural ties.

The Archer, however, was more than only a dealer. He arrived with the essential metalworking abilities. The first metals were introduced to Britain at this time. He would have been among the first individuals in Britain to be able to work gold, which undoubtedly would have elevated him to a position of great status. Hence, his grave's wealth.

Hence, strontium isotope analysis report satisfactory result.

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A patient is getting an IV infusion with 0.45% NaCl. If a patient receives needs 5 grams of NaCl,  1111.11 ml is the total solution that should be infused.

A homogenous mixture made up of two or more substances is referred to as a solution. The substance that is dissolved in the solvent is known as the solute, whereas the substance that is present in greater quantity is referred to as the solvent. Depending on the composition of the solute and solvent, solutions can be solid, liquid, or gaseous. In solution chemistry, a stable combination is produced by achieving a uniform dispersion of particles throughout the solvent. Solvents are used in this process to dissolve solutes.

0.45 grams NaCl / 100 ml = 5 grams NaCl / x ml

(0.45 grams NaCl) × x ml = (5 grams NaCl) * 100 ml

0.45x = 500

x = 500 / 0.45

x ≈ 1111.11 ml

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Answer:

Its B all the others arent true and also dont make any sense

Explanation:

Sodium has a lower ionization energy than magnesium describes why sodium reacts vigorously than magnesium chloride.

Therefore, sodium is more reactive than magnesium chloride because of lower ionization energy.

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The answer is Mg3 glad I helped

Answer:

The equation for percent composition is (mass of element/molecular mass) x 100.

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The electron domain geometry of SCl2 is tetrahedral, and the molecular geometry is bent or V-shaped.

The electron domain and molecular geometries of SCl2 are as follows:

1. Electron domain geometry: To determine the electron domain geometry, first, draw the Lewis structure of SCl2. Sulfur (S) has 6 valence electrons, and each chlorine (Cl) has 7 valence electrons. So, there are a total of 20 valence electrons in the molecule. When you draw the structure, sulfur will be the central atom bonded to two chlorine atoms and have two lone pairs of electrons.

2. Molecular geometry: To determine the molecular geometry, consider only the bonded atoms and ignore the lone pairs. In the case of SCl2, there are two bonding pairs and two lone pairs on the central sulfur atom. Based on the VSEPR theory (Valence Shell Electron Pair Repulsion), the electron pairs will arrange themselves to minimize repulsion. The molecular geometry will be bent or V-shaped.

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Answer:

240 N/m

Explanation:

Using the formula as follows:

U = ½kx²

Where;

U = elastic potential energy (J)

K = spring constant (N/m)

x = stretched displacement (m)

According to the information provided in this question,

U = 35J

x = 0.54m

k = ?

U = ½kx²

35 = ½ × k × 0.54²

35 = ½ × k × 0.2916

35 = 0.2916k/2

70 = 0.2916k

k = 70 ÷ 0.2916

k = 240.05

To 2s.f, the spring constant (k) = 240 N/m.

Answer: 240

Explanation:

The atomic mass X of Kr in the fission reaction is: C. 89u.

To determine the atomic mass X of Kr in the fission reaction 235U + n -> 144Ba + Kr + 3n, we need to apply the principle of conservation of mass:

Initial mass = Final mass

Initially, we have 235U and one neutron (n), so the total initial mass is 235 + 1 = 236 units. After the fission reaction, we have 144Ba, Kr, and 3 neutrons. The total final mass should also be 236 units.

Now, let's find the atomic mass X of Kr:
Initial mass = 144Ba + Kr + 3n
236 = 144 + X + 3

Since the mass of a neutron (n) is 1 unit, the equation becomes:
236 = 144 + X + 3

Solve for X:
X = 236 - 144 - 3
X = 89

Therefore, the atomic mass X of Kr in the fission reaction is 89 units, making the correct answer (c) 89 u.

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Answer:

Explanation:

Hope it helps:)

Friction acts in the opposite direction to the direction of an object's motion. Therefore, option (b) is correct.

Friction can be defined as the resistance provided by the surfaces that are in contact when they pass over each other. Friction offers the traction that is required to walk without slipping.

Friction can be described as a force that is dependent on external factors.  Friction depends upon the nature of the two surfaces that are in contact and on the smoothness or roughness of the two contacted surfaces. When one body moves over the surface of another, these irregularities on the surface of the bodies get entangled and develop friction.

Friction depends upon the force that is exerted on these surfaces and increases when the force is applied along with the irregularities. Types of Friction are Rolling friction, Static friction, Sliding friction, and Fluid friction.

The force of friction acts in the opposite direction to the direction of an object's motion.

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The value for the rate constant of a reaction can generally be expected to increase with increasing temperature.

The rate constant is a measure of the speed of a chemical reaction and is directly proportional to temperature, according to the Arrhenius equation. This means that as temperature increases, the rate constant also increases. This is true regardless of whether the reaction is exothermic or endothermic.

The Arrhenius equation shows that the rate constant of a reaction (k) is exponentially dependent on the activation energy (Ea) and inversely dependent on the temperature (T). As the temperature increases, the rate constant and the reaction rate tend to increase due to more energetic collisions between reactant molecules.

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The density of oxygen is 1.43 g/LC.

The periodic table's Group 16 (also known as the oxygen group) contains the nonmetallic chemical element oxygen (O). Oxygen is a colorless, odorless, and tasteless gas that is necessary for all living things. Animals take it up and then change it into carbon dioxide, which plants then use as a source of carbon and release the oxygen back into the atmosphere.

As well as reactions that remove elements from their combinations with one another, oxygen can react with nearly any other element to produce compounds. These reactions, which are frequently accompanied by the evolution of heat and light, are known as combustions. Water is the most significant component.

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Answer:

C3H6O3

Explanation:

Hydroxyacetone

Answer:

February 12th.

Explanation:

Trust me.