what is the colour of [Cr(H2O)6]2+

Answer:

We can mix two compounds and create a third that bears little resemblance to its parents. For instance, by mixing two parts of hydrogen gas with one of oxygen - liquid water is formed. We should not be misled by the fact that chlorine and chlorine dioxide share a word in common. The chemistries of the two compounds are completely different.

Chlorine and chlorine dioxide are both oxidizing agents (electron receivers). However, chlorine has the capacity to take in two electrons, whereas chlorine dioxide can absorb five. This means that mole for mole, ClO2 is 2.6 times more effective than chlorine.

If equal, if not greater importance is the fact that chlorine dioxide will not react with many organic compounds, and as a result, ClO2 does not produce environmentally dangerous chlorinated organics. For example; aromatic compounds have carbon atoms arranged in rings and they may have other atoms, such as chlorine, attached to these rings, to form a chlorinated aromatic - a highly toxic compound that persists in the environment long after it is produced.  

Chlorine dioxide's behaviour as an oxidizing agent is quite dissimilar. Like ozone, the predominant oxidation reaction mechanism for chlorine dioxide proceeds through a process known as free radical electrophilic (i.e. electron-attracting) abstraction rather than by oxidative substitution or addition (as in chlorinating agents such as chlorine or hypochlorite). This means that chlorinated organic compounds such as THMs and HAAs are not produced as a result of disinfection using chlorine dioxide

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The way that the names of these compounds show that the Chlorine oxides are different is by making reference to the number of individual molecules in the compound.

The number of chlorine and oxygen molecules in each compound are used to name the compounds which ensures that they are differentiated.

ClO₂ is called "Chlorine Dioxide" which shows that there are two Oxygen atoms.

Cl₂O₃ is called "Dichlorine Trioxide" which shows that there are two Chlorine molecules and 3 Oxygen molecules.

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Answer:

Gadolinium (Gd).......

Answer:

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Cloud is a gas.

ice is a solid.

snow is a solid.

steam is a gas.

rain is a liquid.

Answer:

A

Thank tou

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Answer:

calcium

Explanation:

you can check on the periodic table

Based o the nature of the reactants and products:

A chemical reaction is a reaction that results in changes in the chemical properties of substances.

A chemical reaction results in the formation of new products.

There are several types of chemical reactions such as:

This is illustrated as follows: AB + C ---> AC + B

This is illustrated as follows: AB + CD ---> AC + BD

Hence, two ionic compounds react to produce two iob=nic compounds.

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Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore, 3.51g of nitric acid will remain in 3 liters of solution with a density of 1.171 g/ l.

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density of solution = mass of solution ÷volume marked on the graduated cylinder

Substituting all the values in above formula, we get

1.171 g/ l = mass of solution/ 3 liters

mass of solution= 1.171× 3

mass of solution =3.51g

Therefore, 3.51g of nitric acid will remain in 3 liters of solution with a density of 1.171 g/ l.

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Answer:

If the speed is increasing, the car has positive acceleration. When the car slows down, the speed decreases. The decreasing speed is called negative.

I don't know

Explanation:

because it does not give an question

The heat transfer will only occur in setup 2 and heat will only flow from C to D.

In a mixture between two substances of different temperatures, there is heat transfer, in which the one with a lower temperature receives this heat and the one with a higher temperature loses the heat.

In a system, the value of heat lost and received is equal.

So, heat will only flow in setup 2 since it is the only one that has two bodies with different temperatures, and it will flow from C to D because C has a higher temperature.

The representation of heat transfer can be done as follows:

                                                     C ⇒ D

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The calculated molar ratio of iron to oxygen in BIFs is 1.452.

Comparing this ratio to the molar ratios of Hematite (1:0.75) and Magnetite (1:0.67), we can see that the calculated value of 1.452 is closest to the Hematite molar ratio of 1:0.75. Therefore, Hematite is the more dominant iron component in BIFs.

To calculate the mass of oxygen contained within BIFs, we'll use the given information:

Total mass of the modern atmosphere = 5.01×10¹⁸ kg

Percentage of oxygen in the modern atmosphere = 21%

Mass of oxygen contained within the modern atmosphere = (5.01×10¹⁸ kg) × (0.21) = 1.051×10¹⁸ kg

Percentage of oxygen contained in BIFs = 6.6% (given)

Mass of oxygen contained within BIFs = (6.6% of 1.051×10¹⁸ kg) = 6.6/100 × 1.051×10¹⁸ kg = 6.9166×10¹⁶ kg

Therefore, the mass of oxygen contained within BIFs is 6.9166 × 10¹⁶ kg.

To calculate the number of moles of oxygen contained within BIFs, we'll use the molecular mass of O₂:

Molecular mass of O₂ = 0.032 kg/mole

Number of moles of oxygen contained within BIFs = (Mass of oxygen in BIFs) / (Molecular mass of O₂)

= (6.9166×10¹⁶ kg) / (0.032 kg/mole) = 2.1614375 × 10¹⁸ moles

Therefore, the number of moles of oxygen contained within BIFs is 2.1614375 × 10¹⁸ moles.

Next, let's calculate the mass of iron in BIFs:

Total mass of BIFs = 5.0×10¹⁷ kg

Percentage of iron in BIFs = 35%

Mass of iron contained within BIFs = (35% of 5.0×10¹⁷ kg) = 35/100 × 5.0×10¹⁷ kg = 1.75×10¹⁷ kg

To calculate the number of moles of iron contained within BIFs, we'll use the atomic mass of iron:

Atomic mass of iron = 0.0558 kg/mole

Number of moles of iron contained within BIFs = (Mass of iron in BIFs) / (Atomic mass of iron)

= (1.75×10¹⁷ kg) / (0.0558 kg/mole) = 3.1367419 × 10¹⁸ moles

Therefore, the number of moles of iron contained within BIFs is 3.1367419 × 10¹⁸ moles.

Finally, let's calculate the molar ratio of iron to oxygen in BIFs:

Molar ratio of iron to oxygen = (Number of moles of iron) / (Number of moles of oxygen)

= (3.1367419 × 10¹⁸ moles) / (2.1614375 × 10¹⁸ moles)

≈ 1.452

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The "border-radius" CSS3 property can be used to create rounded corners on all four corners of an element.

1. To create rounded corners on an element, you can use the "border-radius" property in your CSS code.
2. The "border-radius" property allows you to specify the radius of the corners, determining how rounded they will appear.
3. To round all four corners of an element, you can use a single value for the "border-radius" property. For example, if you set the value to "10px", all corners of the element will have a radius of 10 pixels.

4. You can also specify different values for each corner to achieve different shapes. For instance, using the syntax "border-radius: 10px 20px 30px 40px;" will make the top-left corner have a radius of 10 pixels, the top-right corner 20 pixels, the bottom-right corner 30 pixels, and the bottom-left corner 40 pixels.
5. By combining the "border-radius" property with other CSS properties like background color or border styles, you can create visually appealing rounded corners for your elements.

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Answer: C. Atoms cannot be subdivided, created, or destroyed. This is the correct answer

The species that exhibit resonance are NO3–, SO3^2–, and PO3^3–.

Resonance refers to the delocalization of electrons within a molecule, resulting in multiple resonance structures. In NO3– (nitrate ion), the three oxygen atoms form a resonance hybrid, with the negative charge spread over the entire molecule.

Similarly, in SO3^2– (sulfite ion), the sulfur atom shares its electrons with three oxygen atoms, resulting in resonance structures. Lastly, in PO3^3– (phosphite ion), the phosphorus atom forms resonance structures by sharing electrons with three oxygen atoms.

Resonance stabilizes the molecules by distributing the charge or electron density more evenly, making them more stable and less reactive. Therefore, the correct answer is E) NO3–, SO3^2–, and PO3^3–.

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Answer:

There is nothing. Sorry can't help!

As the distillation head fills with the vapors of lower-boiling compound, the head temperature rises.

What happens to the temperature when you just distill something?

The temperature at which the solution must boil rises as the distillation goes on because the more volatile component boils out quicker. As a result, the distillate's composition varies with time. Because the lower-boiling compound completes the distillation process before the higher-boiling compound's vapors can fill the distillation head and raise the head temperature, the temperature lowers. The lower boiling liquid has finished its distillation process, leaving just the upper boiling liquid, which causes the temperature to begin to fall.

As a result, the impure liquid must be heated up in the flask it is contained in before it can begin to evaporate and reach the thermometer on top.

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