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N76 [4]
3 years ago
8

A) How are physical and social systems alike?b) How are they different?

Chemistry
1 answer:
tresset_1 [31]3 years ago
4 0

Answer:

no

Explanation:

physical is human touch for example. while social is taking and hanging out or just talking on the phone.

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describe the" fear appeal" and how it's used in public messaging. Give an example or create your own public health message using
Vsevolod [243]
A good example is cigarretes they try to scare you into not smoking by telling you all of the downsides of smoking like lung cancer and i guess that would be fear appeal 
7 0
3 years ago
The size of the gas particles compared to the overall volume of the gas is 22.4 L
jeka57 [31]
Well. Yeah. Basically.

1 mole of any gas is 22.4 L. 

Not really sure if that answers your question but that's what i know. 
Anyway if we are talking about the size then usually gases are filled with empty space.
4 0
4 years ago
A 1170.-gram sample of NaCl() completely reacts, producing 460. grams of Na(). What is the total mass of Cl2(g) produced?
777dan777 [17]
2 NaCl --------> 2 Na  + Cl₂
  
2 mol * 23 g Na = 46 g

2*35,5 g Cl = 71 

 46 g Na --------- 71 g Cl₂
 460 g Na -------- ?

mass ( Cl₂) = 460 . 71 / 46

Mass (Cl₂) = 32660 / 46

m= 710 g of Cl₂

<span>hope thips helps</span>
4 0
3 years ago
What is the number of molecules present in 1.12 dm^3 of nitrogen gas at STP​
Anuta_ua [19.1K]

Answer:

\huge\boxed{\sf No.\ of\ molecules = 3 * 10\²\² \ molecules}

Explanation:

<u>Given Data:</u>

Volume = v = 1.12 dm³ = 1.12 L

Density of nitrogen at STP = D = 1.25 g / L

Molar mass = M = 14 * 2 = 28 g / mol

Avogadro's Number = \tt{N_{A}} = 6.023 * 10²³ mol⁻¹

<u>Required:</u>

No. of molecules = ?

<u>Formula:</u>

\tt{No. \ of \ molecules = \frac{Density * Volume}{Molar\ Mass} * N_{A}}

<u>Solution:</u>

No. of molecules = (1.25*1.12) / 28 * (6.023 * 10²³)

No. of molecules = ( 1.4 / 28 ) * 6.023 * 10²³

No. of molecules = 0.05 * 6.023 * 10²³

No. of molecules = 0.3 * 10²³

No. of molecules = 3 * 10²² molecules

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
4 0
3 years ago
Which of the following is a compound? <br><br> Select one:<br> a. Cl2<br> b. H2O<br> c. He<br> d. H2
user100 [1]

I believe the correct answer is B

3 0
4 years ago
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