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Ratling [72]
2 years ago
5

Describe an element and a compound. Compare and contrast their similarities and differences. Identify how elements are related t

o compounds. Be sure to include the following key vocabulary terms: Pure substance, chemical symbol, chemical formula.
Chemistry
1 answer:
Alenkasestr [34]2 years ago
4 0

Answer:

<u>»</u><u> </u><u>Similarities</u><u> </u><u>:</u>

☑ They both react by chemical means, to produce either an element or compound as the end product of the chemical reaction.

• Take an example of Magnesium reacting with cold water:

{ \rm{Mg_{(s)}  + 2H _{2} O _{(l)}  → Mg(OH)_{2(aq)} + H_{2(g)}}}

• If it reacts with steam:

{ \rm{Mg _{(s)}  + H _{2} O_{(l)} → MgO_{(s)} + H_{2(g)}}}

• [ Element: <em>Magnesium</em><em> </em>and Compound: <em>Water</em><em> </em>]

They are both classified under atomic substances cause they are made up of microscopic molecules known as atoms.

☑ They are both formed up by microscopic substances known as atoms.

<u>»</u><u> </u><u>Differences</u><u> </u><u>:</u>

☑ Compounds generally have higher molecular masses than elements.

☑ Compounds are formed through bonding by elements while elements can naturally exist or formed by extraction, purification and concentration

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CO2 + H2O + C6H12O6 +02
andrew11 [14]

Answer:

6CO2+6H2O->C6H12O6+6O2

Explanation:

CO2+H2O+C6H12O6+O2 This wrong when you write a formula. Don't savage the given question. caused it will affect the same answer.

It will write as this CO2+H20->C6H12O6+O2

So, Think what will you use the numbers in a side of chemical formula/name I am using the "eyes to eyes "caused you need to it properly. If you are not good at it use other method calculate each chemical name example. we have C=1,O=2 then, H=2,O=1 and they other side goes to the arrow is C=6 H=12O=6 ,O=2 I will think what number will make it balance for them and what is lucking see in the my answers what I add in the equation think carefully I didn't change or erase a number of them. Caused it is wrong if you do that. Thank you

6 0
2 years ago
It takes 2,500,00 Liters of Helium to fill the Goodyear Blimp. How many moles is this?
Valentin [98]

Answer:

102.26 moles of helium were required to Fill the Goodyear Blimp

Explanation:

To solve this question we need to use combined gas law:

PV = nRT

<em>Where P is pressure, V is volume of gas (2500L), n are moles of gas (Our incognite), R is gas constant (0.082atmL/molK) and T is absolute temperature</em>

<em />

Assuming atmospheric condition we can write P = 1atm and T = 25°C = 298.15K

Replacing:

PV/RT = n

1atm*2500L / 0.082atmL/molK*298.15K = n

<h3>102.26 moles of helium were required to Fill the Goodyear Blimp</h3>

<em />

3 0
2 years ago
If you push a crate with 50N of force for 10 meters in 5 seconds how much power dis u use​
morpeh [17]

Answer:

Hi... Your answer is 10*50=500

5 0
2 years ago
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How many liters of nitrogen gas are needed to make 25 mol of nitrogen trifluoride
ikadub [295]
The reaction between N₂ and F₂ gives Nitrogen trifluoride as the product. The balanced equation is;

N₂ + 3F₂ → 2NF₃

The stoichiometric ratio between N₂ and NF₃ is 1 : 2
Hence, 
  moles of N₂ / moles of F₂ = 1 / 2
  moles of N₂ / 25 mol        =  0.5
           moles of N₂            =  0.5 x 25 mol = 12.5 mol
 
Hence N₂ moles needed  = 12.5 mol

At STP (273 K and 1 atm) 1 mol of gas = 22.4 L

Hence needed N₂ volume = 22.4 L mol⁻¹ x 12.5 mol
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What organelles are involved in the production of proteins
DanielleElmas [232]

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endoplasmic reticulum (ER)

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