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3 years ago

An ice cube is dropped into boiling water. How will heat flow between the water and the ice cube?

2 answers:

7 0

Heat transfers from hot body to cold body. So when ice is dropped in water , the water at higher temperature will lose heat energy and is gained by the ice at less temperature. When the Net heat lost equals to Net heat gained i.e.,When both the bodies attain themal equilibrium, the flow of heat energy stops and both attain equal temperatures.

Natasha2012 [34]3 years ago

4 0

On a microscopic (molecular) level, heat flows from the ice to the boiling water
at a minuscule rate, and from the water to the ice at a humongous rate.

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Someone please help me figure this out!!

zavuch27 [327]

Answer: from what i can tell it looks like a heterogeneous mixture

Explanation:

heterogeneous is multiple different components, homogenous includes only the same component

7 0

3 years ago

1. A sample of polystyrene is found to have a number-average molar mass of 89,440 g mol−1 . Neglecting contributions from end gr

Snowcat [4.5K]

Answer:

The weight-average molar mass of polystyrene is 134,160 g/mol.

Explanation:

Molar mass of the monomer styrene , $C_8H_8$ , M=104 g/mol

Given , number average molar mass of the polymer , M'= 89,440 g/mol

Degree of polymerization = n

$n=\frac{M'}{M}=\frac{89,440 g/mol}{104 g/mol}=860$

The weight-average molar mass = $M_{avg}=?$

Molar mass dispersity is ratio of weight-average molar mass to the number average molar mass of the polymer.

$\text{Molar mass dispersity}=\frac{M_{avg}}{M'}$

$1.5=\frac{M_{avg}}{89,440 g/mol}$

$M_{avg}=89,440 g/mol\times 1.5 = 134,160 g/mol$

The weight-average molar mass of polystyrene is 134,160 g/mol.

8 0

3 years ago

Metals lose electrons and become

antoniya [11.8K]

Ionic compounds are molecules that form through the gain and loss of electrons. A metal atom that loses an electron takes on a positive electric charge .

6 0

3 years ago

What is the concentration of a solution prepared by dissolving 100g of sorbitol in 1000 ml of water?

disa [49]

first you divide them together and get an answer of 10 then you times it by 5 and your answer is 50 ml

7 0

3 years ago

C3H6(OH)2 major species present when dissolved in water

topjm [15]

Answer: the major species present when C₃H₆(OH)₂ is the same molecule.


Explanation:


When solutes dissolve in water there are two possibilities: 1) either the solute dissociate into ions (which is the case of ionic compounds) and the ions are solvated by the solvent, or 2) in the case of covalent compounds the entire molecule is solvated by the molevules of the solvent (water).


The compound C₃H₆(OH)₂ (propylene glycol) is a covalent compound, so when dissolved in water it will not dissociate but will remain as a molecule, and that molecules is the species solvated by the molecule of water.

6 0

3 years ago