How to prepare 0.2mol of iodine in 13gram of the solution

Answer:

Convex

Explanation:

8 guess not sure cause light rays should be converging to meet to their eye

Answer:

1. It will take the shape of its container. Particles can move about within a liquid, but they are packed densely enough that volume is maintained. Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume. A gas can be compressed

2.  However after pouring the water from one short glass into a tall glass,  to be the same amount after being poured into any other container

3. Yes, wood have a fixed shape. Explaination: The reason is that it's solid and solids have a definite volume and shape. ... They have shapes that do not change and volumes that can be measured

4. Water is known to exist in three different states; as a solid, liquid or gas. Clouds, snow, and rain are all made of up of some form of water. A cloud is comprised of tiny water droplets and/or ice crystals, a snowflake is an aggregate of many ice crystals, and rain is just liquid water

5. Solids are sometimes formed when liquids or gases are cooled; ice is an example of a cooled liquid which has become solid. Other examples of solids include wood, metal, and rock at room temperature

6. For example, water commonly exists in three states of matter: solid (ice), liquid (water), and gas (steam)

Explanation:

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1. It will adopt its container's shape. Within a liquid, particles can move around, yet the volume is maintained because of the liquid's dense packing. Particles in gaseous stuff are arranged so haphazardly that neither their shape nor their volume can be determined.

The term liquid is defined as substance which is not solid but which flows and can be poured and take a shape of container. water is an example of liquid.

2. However, the same amount of water would be poured into any other container after being transferred from one short glass to a tall glass.

3. The shape of wood is fixed. It's solid, and solids have a distinct volume and shape, which explains why. They have measurements-able volumes and unchanging forms.

4. There are three recognized states of water: solid, liquid, and gas. Snow, rain, and clouds are all composed of water in some way. A snowflake is an accumulation of several ice crystals, a cloud is made up of microscopic water droplets and/or ice crystals, and rain is just liquid water.

5. When liquids or gases are chilled, solids can occasionally form; ice is an example of a cooled liquid that has solidified. At room temperature, solids also include wood, metal, and rock.

6. As an illustration, water typically exists in three states: solid (ice), liquid (water), and gas (steam).

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Answer:

69.152 % → 63Cu

30.848 % → 65Cu

Explanation:

As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.

Bond polarity and ionic character go hand in hand: We can say that polarity and ionic character are positively correlated. The classical way to determine either is to compare the electronegativity difference (ΔEN) between the bonding atoms. The greater the difference in electronegativity, the larger the dipole moment, the greater the polarity, and the greater the ionic character of the bond.

The Pauling electronegativity scale, which should be provided in most chemistry texts and is certainly available online, can be used to determine ΔEN. As a very general rule of thumb, an ΔEN that is equal to 2.0 or greater indicates an ionic bond. We don't have to worry about that here, though, since we're only interested in polarity. But this is just some conceptual relation to consider; indeed, ionic bonds can be seen as very polar covalent bonds (or covalent bonds with significant ionic character).

There is no known bond that has a 100% ionic character (ΔEN = 4), i.e., a purely ionic bond. But there are many bonds that we know of with 0% ionic character (ΔEN = 0), i.e., a completely nonpolar bond. We can think about this logically without even knowing specific electronegativity values: If the difference in electronegativity between two bonding atoms is 0, then the two atoms must have equivalent electronegativities. And when can this be the case? Well, atoms from the same element have the same electronegativity. So one case of completely nonpolar bonding would be covalent bonding between atoms of the same element.

In the question given, there are two such cases: P4 and Br-Br. P4 is a tetrahedral molecule composed of four covalently bonded P atoms, each one bearing a lone electron pair and bonded to the other three. With each P having the same electronegativity (ΔEN = 0), no P-P bond in P4 has a dipole moment, and the P4 molecule itself is nonpolar. Br-Br is how bromine is found naturally (as diatomic Br₂); since this is a covalent bond between the atoms of the same element, the ΔEN = 0 and there is no dipole moment. A bromine molecule is completely nonpolar.

Fluorine (F) has the greatest electronegativity among the elements, so whether the Te-F or the Cl-F bond has the greater polarity (i.e., the greater ΔEN) really depends on the electronegativity of Te and Cl.

But let's think about this first. Both Cl and F are halogens; Cl is in the period right below F, and, following periodic trends, Cl itself is quite electronegative. Generally, nonmetals don't form ionic bonds with each other (the underlying reason is complicated and not relevant here, but that notion agrees with ΔEN between any two nonmetals being less than 2.0). Nonmetallic elements can form very polar covalent bonds whose ΔEN is very close to 2.0, however.

Tellurium (Te) is a metalloid that is three periods below F. Electronegativity generally decreases as you go down a group. Even though Te and Cl are not in the same group, the fact that Te is two periods below should give a strong presumption that Te has a lower electronegativity than Cl. Moreover, electronegativity increases you move left to right on the periodic table (that is, as the group number increases); Te is in a group to the left of fluorine's and chlorine's. So, using periodic trends alone, we know that Te is in a group to the left of and below that of Cl, both of which trend toward decreasing electronegativity. Thus, it would be reasonable to assume that Te would have a smaller electronegativity than Cl. And so, the ΔEN of Te-F > ΔEN of Cl-F, which means the Te-F bond should have the greater polarity. And, indeed, this is true using the Pauling scale: The EN of F is 4.0; the EN of Cl is 3.0; and the EN of Te is 2.1.

In all, given that the ΔEN of P-P = 0; ΔEN of Br-Br = 0; ΔEN of Te-F = 1.9; and ΔEN of Cl-F = 1.0; the Te-F bond has the greatest polarity.

Answer:

A. Water

Explanation:

Virtually every known substance can be referred to as MATTER, as long as it has weight and occupies space. Matter can exists in three different forms namely: solid, liquid and gaseous states.

However, each state of matter has its own unique property that characterizes it. WATER is the only matter that can exists in the three different states as follows:

- LIQUID - WATER

- SOLID - ICE

- GASEOUS - STEAM OR VAPOUR.

Water is a polar molecule where,  the positive hydrogen end attracts the negative oxygen ends of another water molecule. Thus, option D is correct.

Polarity is ability of charge separation in a molecule. In some molecules, the positive and negative ends exists separately and both ends remains reactive towards the counter charged end of other molecule.

The charge separation  in molecules results in a  dipole moment. Permanent dipole moment make the molecule polar. Water is a polar molecule.

The shared pair of electrons in water are more attracted towards the electronegative oxygen atom leads the charge separation. This polarity helps to the formation of strong intermolecular hydrogen bonding.

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Answer:

2 because it has two outer shell electrons out of 8 (relevant rule only for the first 20 elements)

Answer:

A. How much decay happens in each flashlight

Explanation:

In an experiment, the DEPENDENT OR RESPONDING VARIABLE is the variable that responds to changes being made to another variable called Independent variable. It is the variable that is measured by an experimenter.

In this question, an experiment was carried out to research the effect of sunlight on plastic decay. Three plastic flashlights were used for this experiment in which one was placed in a dark closet (control), and the others were placed in light at different times or intervals. However, the variable being measured or assessed is the decay of each flashlight. This means that "HOW MUCH DECAY HAPPENS IN EACH FLASHLIGHT" is the dependent variable.

Answer:

the second question should be along the staircase

Answer:

pertane the stronger the force the larger amount of energy needed to break of the connection between the molecules

Answer:

Hey mate....

Explanation:

This is ur answer.....

A species considered to be facing a very high risk of extinction in the wild.

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Answer:

It means when a species in the wildlife is in danger or close to being completely extinct.

Answer:

they will have 100% kinetic energy

Explanation:

all the potential energy has been used when it is at the bottom of the ramp

Answer:

2 moles

Explanation:

For a mole NaCi, we have a mole of sodium ion and a mole of chloride.

Answer:

133.74 L

Explanation:

First we convert the given pressures and temperatures into atm and K, respectively:

Then we use the PV=nRT formula to calculate the number of moles of helium in the balloon, using the data of when it was on the ground:

Then, knowing the value of n, we use PV=nRT once again, this time to calculate V using the data of when the balloon was high up:

The position where a Period 4 element that is also a metal with three valence electrons would be located is: B) Position 15.

A periodic table can be defined as an organized tabular array of all the chemical elements, which is typically arranged in order of increasing atomic number or number of protons (in rows).

In Chemistry, a periodic table comprises seven (7) rows and eighteen (18) columns. Also, all chemical elements are arranged (grouped) on the periodic table based on their atomic number (number of protons).

In this context, the position where a Period 4 element that is also a metal with three valence electrons would be located is Position 15 on the periodic table.

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Answer:

D, F

Explanation:

thats very nice lol, things stuck in amber are very cool

Answer: 37.01 moles (mol) of gas

Explanation:Use PV=nRT

which is also equal to n=PV/RT

P=2.90

V= 4.80

R = 8.31 (R will always be the same in any equation)

T= 62.0

2.90 x 4.80= 13.92 / 8.31 x 62= 515.22

13.92/13.92=515.22/13.92

n= 37.01 mol

Answer:

The reason is that sodium attaches itself very strongly to other elements. Its compounds are very difficult to break apartand also because it is so reactive.

Answer:

1.35g of CaCO₃ are in the paracetamol

Explanation:

Assuming the volume of the 0.5mol NaOH was 23cm³

The CaCO₃ of paracetamol reacts with HCl as follows:

CaCO₃ + 2HCl → CO₂ + H₂O + CaCl₂

When an excess of HCl is added and titrated, we can find the moles of HCl that react = Moles CaCO₃ based on the second reaction:

NaOH + HCl → H₂O + NaCl

Moles added of NaOH:

23cm³ = 0.023L * (0.5mol / L) = 0.0115 moles NaOH = Moles HCl in excess

Moles of HCl:

25cm³ = 0.025L * (1.0mol / L) = 0.025 moles HCl

The moles of HCl that reacted = Moles CaCO₃ are:

0.025 moles - 0.115 moles = 0.0135 moles CaCO₃

The mass of CaCO₃ -Molar mass: 100.09g/mol- is:

0.0135 moles CaCO₃ * (100.09g/mol) =

Answer:

SATURATED: Saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds.

UNSATURATED: Unsaturated fats are loosely packed. They tend to be liquid at room temperature.

There are two main types of unsaturated fat:

Monounsaturated

Polyunsaturated

Answer: D

Explanation: i’m right

Answer:

38 g

Explanation:

I think thats the answer in your question

Answer:

26.795229

Explanation:

This is how much it is