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nadezda [96]
3 years ago
12

What is the greatest challenge we face on earth?

Chemistry
1 answer:
Paha777 [63]3 years ago
4 0
Now, we're currently in between with almost all the communist/republican countries.
Ever since Donald trump came in president. Things got a bit rough with China and the U.S
There might be a war soon WWIII.
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24. When the equation
serg [7]

Answer:

Explanation:

3

Explanation:

The reaction expression is given as:

     Al(OH)₃  +   HNO₃   →    H₂O   +  Al(NO₃)₃  

To solve this problem, let us assign coefficient a,b,c and d to each specie;

          aAl(OH)₃  +   bHNO₃   →    cH₂O   +  dAl(NO₃)₃  

Conserving Al : a  = d

                  O:  3a + 3b  = c + 9d

                  H: 3a + b  = 2c

                  N: b  = 3d

let a = 1 , d  = 1, b  = 3 , c = 3

 Multiply through by 3;

a  = 1, b  = 3, c = 3 and d  = 1

  Al(OH)₃  +   3HNO₃   →    3H₂O   +  Al(NO₃)₃  

7 0
3 years ago
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12. Study the chemical reaction below, what are the product(s) in the reaction and what are the reactant(s) in the reaction (Sho
natita [175]

Explanation:

The reactants are Aluminium and Copper chloride.

The products are Copper and Aluminium chloride.

5 0
3 years ago
Write the electron configuration (ground and excited states) for element with atomic number 16 ?
Talja [164]
2, 8,6 because it has to be in a configuration of 2,8,8
3 0
3 years ago
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 65.1 moles of water vapor?
ivolga24 [154]
 <span>CO2 + 4 H2 -----> CH4 + 2H2O ......

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5 0
3 years ago
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When you burned copper, the product copper
MatroZZZ [7]

Answer:

Oxygen.

Explanation:

The copper must be combined with something in the air.

6 0
3 years ago
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