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3 years ago

What is the shape of ICl4-?

Chemistry

1 answer:

Wittaler [7]3 years ago

6 0

Answer:

the ICl4− ion forms a molecular structure that is square planar, an octahedron with two opposite vertices missing.

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What is the specific latent heat of fusion for a substance that takes 550 KJ to melt 14 KG at 262 K?

Arte-miy333 [17]

Answer:- The right choice is A. $3.9*10^4\frac{J}{kg}$ .

Solution:- Latent heat of fusion means the heat required to melt the solid at constant temperature means there is no change in temperature only the solid changes to liquid. So, it is a solid to liquid phase change.

$q=m*\Delta H_f_u_s$

where q is the heat required to convert solid to liquid, m is the mass and $\Delta H_f_u_s$ is the latent heat of fusion.

From given info, 550 kJ that is 550000 J of heat is required to melt 14 kg of solid at 262K temperature. Let's rearrange the equation for latent heat of fusion and plug in the values in it.

$\Delta H_f_u_s=\frac{q}{m}$

$\Delta H_f_u_s=\frac{550000J}{14kg}$

$\Delta H_f_u_s$ = $39286\frac{J}{kg}$

If we round this value to two sig figs and write in scientific notations then it becomes $3.9*10^4\frac{J}{kg}$ .

So, the right choice is A. $3.9*10^4\frac{J}{kg}$ .

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3 years ago

Write a balanced chemical equation describing the reaction of zinc and hydrochloric acid.

erastova [34]

The chemical formula for zinc is Zn, and HCl for hydrogen chloride. The complete balanced equation for these reactants would be:

Zn + 2 HCl → ZnCl₂ + H₂

The stoichiometric coefficient 2 for HCl is essential to obey the Law of Conservation of Mass. The elements before and after the reaction must be equal in amounts.

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4 years ago

Read 2 more answers

Question 6<br> How many molecules are in 4.48 liters of CO 2?

Dovator [93]

22.4 molecules are in 4.48 liters of CO 2

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3 years ago

NH4+H2O →NH3+H3O<br><br> Which one is acting weaker base?

Nataliya [291]

Answer:

NH3

Explanation:

In solution, they are in equilibrium. NH4+ acts as a bronsted Lowry acid and donates an H to become NH3, and NH3 acts as a bronsted lowry base and accepts an H. In this pair, NH3 is a weak base, which gets its basic character due to the presence of lone pair of nitrogen and its ability to donate it.

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2 years ago

Do you know what each item in the central hazardous waste storage area is for?

Sonbull [250]

Answer:

- Bucket liner: a second layer of protection in the hazardous waste containers; they should be sealed with a knot.

- Hazardous bucket label: identifies facility and waste information and must be placed on used hazardous waste containers.

- Zip-tie tags: these are used to close and label bucket liners.

- Chemical bags: plastic bags used to store hazardous waste. They have a zip-type closure and should only store one hazardous waste item.

- Hazardous waste management chart: a job aid which displays how to determine a spill category and how to store hazardous waste until it is picked up.

Explanation:

Hello,

Hazardous waste is a type of waste that could be harmful for the health or the environment . Such waste could exhibit the following threats: ignitability , reactivity , corrosivity and toxicity

Hazardous wastes may be found in gaseous, liquid or solid forms. They can not be disposed of by typical methods like other by-products of our daily life. Based on the physical state of the waste, treatment and solidification processes might be required.

For the given options on the attached picture, each items match as follows:

- Bucket liner: a second layer of protection in the hazardous waste containers; they should be sealed with a knot.

- Hazardous bucket label: identifies facility and waste information and must be placed on used hazardous waste containers.

- Zip-tie tags: these are used to close and label bucket liners.

- Chemical bags: plastic bags used to store hazardous waste. They have a zip-type closure and should only store one hazardous waste item.

- Hazardous waste management chart: a job aid which displays how to determine a spill category and how to store hazardous waste until it is picked up.

Best regards.

5 0

3 years ago

What is the shape of ICl4-?​

What is the shape of ICl4-?