An 8.5 g ice cube is placed into 255g of water. Calculate the temperature change of water when the ice melts

Answers

Answer 1
Answer: To answer this problem, we assume that upon the addition, the ice just melts without the temperature change and just uses the latent heat. The water only uses the sensible heat. Hence the equation is 8.5 g * (80cal/g)*4.1858 (J/g)= 255 g 8(4.18 J/gK)*(ΔT). 80cal/g is the latent heat of vaporization of ice. ΔT is equal to 2.67 Kelvin.

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What is the electron configuration of a sulfur atom in the ground state?(1) 2–4 (3) 2–8–4(2) 2–6 (4) 2–8–6

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The sulfur atom has 16 electrons. The electronic configuration of sulfur is 2, 8, 6.

Sulfur has been the bright yellow, crystalline nonmetal. It has been present in abundance in nature. The sulfur has been used in the gunpowder, as well as fungicide, and in the vulcanization of black rubber,

The electronicconfiguration has been the filling up of electrons of an element in the atomic shells.

The order for filling the shells involves the 2,8,8,14, and so on.

The sulfur has the atomic number 16. It states that it has 16 electrons in the atom.

The electronic configuration of sulfur is as follows:

2,8,6.

The sulfur atom has 16 electrons. The electronic configuration of sulfur is 2, 8, 6.

For more information about the electronic configuration, refer to the link:

brainly.com/question/21940070

Sulphur in the ground state possess 16 electrons that span three shells.  The electronic configuration in this case is 2-8-6 (OPTION 4)

How would you prepare 3.5 L of a 0.9M solution of KCl?

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Calculate the mass of the solute in the solution :

Molar mass KCl = 
74.55 g/mol

m = Molarity * molar mass * volume

m = 0.9 * 74.55 * 3.5

m = 234.8325 g 

To prepare 0.9 M KCl solution, weigh 234.8325 g of salt in an analytical balance, dissolve in a beaker, shortly after transfer with the help of a funnel of transfer to a volumetric flask of 100 cm³ and complete with water up to the mark, then cover the balloon and finally shake the solution to mix

hope this helps!

How does adding a non-volatile solute to a pure solvent affect the boiling point of the pure solvent?The solvent will have a lower boiling point.

The solvent will have a higher boiling point.

The solvent's boiling point will not be affected.

The solvent's boiling point will most likely change, but not in a predictable way.

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The correct answer is the second statement. The solvent will have a higher boiling point. Adding a non-volatile solute to a pure solvent will increase the boiling point of the solvent. This solution exhibit colligative properties. Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present. 

eleanor wants to show her class a comparison of melting rates between two different solids when he is applied why would a graph be more suitable than a table to show her data

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Eleanor wants to show her class a comparison of melting rates between two different solids when heat is applied. A graph would be more suitable than a table to show her data because the she can see the trend line of the effects of melting than the table.

In the metric system, which of the following is correct?1,000 liters = 1 milliliter
1,000 kilograms = 1 gram
100 centimeters = 1 meter

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100 centimeters = 1 meter

Answer:

100 centimeters = 1 meter

The process of ionic bonding is not the same as the process of metallic bonding. Which of the following statements is trueabout these processes?

1. In ionic bonding, only ions of the same element combine to form a compound.
2. In metallic bonding, valence electrons can move freely between atoms.
3. Substances formed through ionic bonding are not considered compounds.
4. In metallic bonding, electrons are transferred between elements in fixed ratios.

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Answer: In metallic bonding, valence electrons can move freely between atoms

Explanation:

when metals bond to one another, their outermost energy levels overlap. this allows valence electrons to move freely between atoms in what is sometimes called a “sea of electrons