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3 years ago

Define Intermolecular forces

2 answers:

7 0

Inter molecular forces are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between molecules and other types of neighboring particles, e.g., atoms or ions. Some include Hydrogen bonds and and Metallic bonding.

cupoosta [38]3 years ago

4 0

Intermolecular forces are the forces that happen between molecules. Just like an interstate is a highway that goes between different states, intermolecular forces are forces are forces between different molecules.

Hydrogen bonds are the strongest of the intermolecular forces.

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Working on-board a research vessel somewhere at sea, you have (carefully) isolated 12.5 micrograms (12.5 ×10–6 g) of what you ho

german

Answer:

The value is $Z = 311.33 \ g/mol$

Explanation:

From the question we are told that

The mass of saxitoxin is $m = 12.5 mg = 12.5 * 10^{-6} g$

The volume of water is $V = 3.10 mL = 3.10 *10^{-3} L$

The osmotic pressure is $P = 0.236 = \frac{0.236}{760} = 3.105 * 10^{-4} atm$

The temperature is $T = 19^oC = 19 + 273 = 292 \ K$

Generally the osmotic pressure is mathematically represented as

$P = C * T * R$

Here R is the gas constant with value

$R = 0.0821 ( L .atm /mol. K)$

and C is the concentration of saxitoxin

$3.105 * 10^{-4} = C * 0.0821 * 292$

$C = 1.295 *10^{-5} mol/L$

Generally the number of moles of saxitoxin is mathematically represented as

$n = C * V$

=> $n = 1.295 *10^{-5} *3.10 *10^{-3}$

=> $n = 4.015 *10^{-8} \ mol$

Generally the molar mass of saxitoxin is mathematically represented as

$Z = \frac{m}{n}$

=> $Z = \frac{12.5 * 10^{-6}}{ 4.015 *10^{-8}}$

=> $Z = 311.33 \ g/mol$

5 0

4 years ago

55 cm3 of gasoline are mixed with 60 cm3 of water. what is the average density of the mixture?

alexandr402 [8]

The density of gasoline is 0.7 g/cm3, and the density of water is 1 g/cm3. Thus the mass of the gasoline is 55*0.7 = 38.5g and the mass of the water is 60g.
Combining the 55 cm3 and 60 cm3 of substances with the aforementioned masses yields a volume of 55+60 = 115cm3 and a mass of 38.5+60 = 98.5g. The density is therefore 98.5/115 = 0.86 g/m3.

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4 years ago

What is required to know the velocity of an object

Andreyy89

Answer:

n order to find the velocity of the moving object, you will need to divide the change in position by the change in time. Specify the direction moved, and you have the average velocity

8 0

3 years ago

Which word describes the amount of matter an object contains?

AnnyKZ [126]

Mass witch would be c i covered this in class

3 0

3 years ago

Read 2 more answers

(20 points) True or False: A benefit of fission and fusion reactions is that it takes very little mass to release large amounts

Arlecino [84]

Answer:

Hopefully its true, its seem like true. I think its true. Sorry if i'm wrong