What color is potassium iodide and lead nitrate ? (is) because it is mixed and it is all one as a compound or a chemical formula or equation .

Answers

Answer 1

Answer: Lead nitrate and potassium iodide, which are the reactants, are powders that react to form a yellow-colored lead iodide and a colorless potassium nitrate!

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Determine how many moles of O2 are required to react completely with 6.7 moles C6H14.
Two liquids mix, neither absorbing nor releasing heat.
Match the separation techniques with the correct descriptions. 1. Heating a solid until it passes directly from the solid phase into the gaseous phase. 2. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid. 3. The process of vapor returning to the solid phase without a liquid phase in between. 4. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry. 5. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter. 6. Using a solvent to selectively dissolve one or more components from a solid mixture.A. SublimationB. Solids that SublimeC. ExtractionD. DecantationE. EvaporationF. Filtration
As carbon dioxide sublimes, its entropy(1) decreases (2) increases (3) remains the same
Your sense of touch is based in your _____. bones muscles skin tissues

Atoms of Group 6 of the Periodic Table are most likely to form ions with

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Sulfur is in group 6 of the periodic table. What is the charge on its ions, and is the charge positive or negative? The charge is negative, since sulfur is a non-metal. The charge on the ion is (8 - 6) = 2.

At constant volume, if the Kelvin temperature of a gas is doubled, the pressure of the gas is halved.A. True
B. False

Answers

False
I got this question right on the test

Answer:

False

Explanation:

Because if Kelvin temperature gas is doubled, the pressure would not change

A chemist wants to calculate the amount of heat that is absorbed by a sample of copper as it is melted. Which constant should she use?

Answers

She needs to use the heat of fusion (ΔH(fusion)) and the equation q=mΔH(fusion) or q=nΔH(fusion) depending on whether or not ΔH(fusion) is given in J/g or J/mol. The reason why temperature is absent from the equation is that temperature does not change at a phase change, only the enthalpy does.

I hope his helps. Let me know in the comments if anything is unclear.

Answer:

Hfus

Explanation:

This is correct on edge.

All of the following can be used to define a base except__. A. a hydronium ion donor in a reaction B. a substance that increases the concentration of hydroxide ions C. an electron pair donor in a reaction D. a substance that is a hydrogen ion acceptor in a reaction

Answers

All of the following can be used to define a base except__.

Answer: Out of all the options presented above the one that cannot be used to define a base is answer choice A) a hydronium ion donor in a reaction. As we already know a base is a compound that is a proton (H¹⁺) acceptor.

I hope it helps, Regards.

A chemistry student must separate should barium sulfate from the aqueous solution. Equipment and glassware normally found in the chemistry classroom are available to the student.Describe how the student could separate the solid barium from the aqueous solution. Be sure to list the lab equipment needed to do the procedure
Explain how each item is used in the procedure
List any safety equipment needed and how it is used in the procedure
Describe how this procedure might be used in a situation outside the chemistry classroom

Answers

If there's just some barium put in an aqueous solution, then it should be something like this.
It's a mixture of a solution and an insoluble solid, so the easiest way to go is through filtration. (Also, I'm assuming the barium is cut into very small chips.)

In a line, simply filter the solution using a folded filter paper in a funnel, collect the residue in a beaker or flask, rinse it with distilled water and let it dry. (Or simply filtering it could be enough, depending on how far your teacher wants you to go.)

Stuff needed:
>filter paper (for separating the solid from the solution)
>funnel (to hold the filter paper)
>beaker or flask (to hold the filtrate)
>distilled water (to rinse the solid)
>spatula (to scoop up the solid)

Procedure:
>Fold filter paper and line the funnel with it. Place the funnel in the flask or beaker.
>Pour solution in. Then add water (I think using tap water might be fine in this case, but you can use distilled water if you'd like) to wash out the container with the solution of any solid you may have not gotten in the first try. Alternatively, you could use a spatula to spoon it onto the filter paper.
>Once everything has been filtered, pour some distilled water on the residue on the filter paper to wash away the solution.
>Take out the filter paper, open it up and let it dry.

This can be used in real life in many occasions. For example, when you make tea, you need to filter the leaves out. Or when you cook the pasta, you put it in a sieve to separate the pasta from the water. Or when you fish using fishing nets, you "filter" the fish from the water.

When gold is hammered it "squishes". Iron Pyrite isknown as "Fool's Gold". It is not..........
like gold,
but shatter into many pieces when struck by a
hammer, Iron Pyrite is..........

Answers

Explanation:

When gold is hammered it "squishes". Iron Pyrite is

known as "Fool's Gold". It is not..........

like gold,

but shatter into many pieces when struck by a

hammer, Iron Pyrite is..........

Final answer:

Gold is a malleable metal, able to deform without breaking when hammered. On the contrary, Iron Pyrite or 'Fool's Gold' is brittle; it shatters when struck due to its lack of malleability.

Explanation:

Gold is known as a malleable metal, which means it can be hammered or bent into different shapes without breaking. In contrast, Iron Pyrite, often known as 'Fool's Gold', is brittle, meaning it will shatter or break when struck by a hammer.

Malleability is a physical property of metals that allows them to be hammered or rolled into thin sheets. Gold is one of the most malleable metals and can be hammered into extremely thin sheets.

On the other hand, a brittle material like Iron Pyrite lacks this property of malleability. Instead of deforming under stress, it will fracture, this is why it shatters into many pieces when struck.

Learn more about Gold and Iron Pyrite here:

brainly.com/question/32140760

#SPJ2

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