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xxMikexx [17]
3 years ago
10

How does cold milk cool hot Cocoa

Chemistry
1 answer:
kakasveta [241]3 years ago
5 0
They will eventually reach equilibrium. But, before that, the thermal energy particles of the COLD milk will slow down the hot cocoa. 
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e average bond order is the number of bonds between two atoms taking into account resonance. Draw a Lewis structure for ozone an
sineoko [7]

Answer:

See Explanation

Explanation:

Resonance is a valence bond terminology which is used to describe a situation in which a single structure is not able to fully describe the nature of bonding in a molecule.

In such cases, we invoke more than one structure. Each structure contributes significantly to our understanding of the nature of bonding in the molecule under consideration and these structures are called canonical or resonance structures.

The real structure of the molecule is somewhere in between these structures -  a resonance hybrid.

For ozone, two equivalent structures can be used to describe the bonding in the molecule. These structures are equivalent as shown in the mage attached. We can see from these structures that the bond order in ozone is 1.5(one and half bonds)

5 0
3 years ago
Which is a description of objects found in abundance between Mars and<br> Jupiter?
nirvana33 [79]

I am not sure but rocky bodies ranging from large to small in size

6 0
3 years ago
Potassium permanganate, KMnO, and glycerin, C3H5(OH)3, react explosively according to the
Finger [1]

The volume of CO2 at STP =124.298 L

<h3>Further explanation</h3>

Given

Reaction

4 KMnO4, +4 C3H5(OH)5, -7K2CO3, + 7 Mn2O3, +5 CO2, + 16 H2O

701,52 g of KMnO4

Required

volume of CO2 at STP

Solution

mol KMnO4 (MW=158,034 g/mol) :

mol = mass : MW

mol = 701.52 : 158.034

mol = 4.439

mol CO2 from equation : 5/4 x mol KMnO4 = 5/4 x 4.439 = 5.549

At STP 1 mol = 22.4 L, so for 5.549 moles :

=5.549 x 22.4

=124.298 L

4 0
3 years ago
Epirical formula of P4O10
harina [27]
I would say the answer is P2O5. Some teachers use PO2.5. I'm not one of them.
7 0
4 years ago
You have a 150mL sample of an aqueous solution at 25C. It contains 15.2mg of an unknown nonelectrolyte compound. If the solution
Serga [27]

The molar mass of the compound:

If the solution has an osmotic pressure of 8.44 torr, then the molar mass of the unknown non-electrolyte is 223.14 g.

What is osmosis?

  • Osmosis is defined as the flow of solvent molecules through semi-permeable membrane.
  • Osmotic pressure is the pressure applied to stop the flow of solvent molecules.
  • It is a colligative property that means osmotic pressure depends on the number of solute particles .

Therefore,

πV=inRT  ( for electrolytes)

Where,   π= Osmotic pressure

i = Van 't Hoff factor

n= moles

R= Gaseous constant = 62.363577 L torr mol^{-1}K^{-1}

T= Temperature

V= Volume of solution

Given:

T= 298K

V= 150 mL= 0.150 L

Given mass of unknown electrolyte= 15.2 mg = 15.2 x  10^{-3} g

Osmotic pressure= 8.44 torr

Molar mass= ?

For non-electrolytes:

πV = n RT

πV=\frac{m}{M}RT

Calculations:

Putting the given values in the formula:

8.44 x 0.150 =15.2 x 10^{-3}/ M x 62.36 x 298

1.266 = 282.5/M

M = 282.5/1.266

M = 223.14 g

Therefore,

The molar mass of the unknown non-electrolyte is 223.14g.

Learn more about Osmotic pressure here,

brainly.com/question/13680877

#SPJ4

7 0
2 years ago
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