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sasho [114]
3 years ago
9

Explain one of the theories on how post-it notes work

Chemistry
1 answer:
alexgriva [62]3 years ago
5 0
The glue molecules stick to the surface molecules like millions of microscopic magnets.
Hope it helps
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What is the molarity of a solution that has 2.52 grams of NaCO3 dissolved to
sammy [17]

Answer:

Explanation:

2.52g/ 0.125L= 20.16M

5 0
3 years ago
A 50.5 L flask contains 3.25 mol of an unknown gas at 288.6 K, what is the pressure of<br> this gas?
Ivahew [28]

Answer:

1.52atm is the pressure of the gas

Explanation:

To solve this question we must use the general gas law:

PV = nRT

<em>Where P is pressure in atm = Our incognite</em>

<em>V is volume = 50.5L</em>

<em>n are moles of gas = 3.25moles</em>

<em>R is gas constat = 0.082atmL/molK</em>

<em>And T is absolute temperature = 288.6K</em>

To solve pressure:

P = nRT / V

P = 3.25mol*0.082atmL/molK*288.6K / 50.5L

P = 1.52atm is the pressure of the gas

3 0
3 years ago
1 What direction do<br> molecules move in?
notsponge [240]

Answer:

The majority of the molecules move from higher to lower concentration, although there will be some that move from low to high. The overall (or net) movement is thus from high to low concentration.

hope this helps!<3

3 0
3 years ago
What is the iupac nomenclature of diethyl methane​
grin007 [14]

Answer:

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). ... IUPAC names can sometimes be simpler than older names, as with ethanol, instead of ethyl alcohol.

Explanation:

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). ... IUPAC names can sometimes be simpler than older names, as with ethanol, instead of ethyl alcohol.

7 0
3 years ago
Is it true river flows from areas of low ground to areas of high ground​
melomori [17]
False, rivers tend to flow from high ground to low ground
5 0
3 years ago
Read 2 more answers
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