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Illusion [34]
3 years ago
8

Please answer! I will mark you as brainlist! ​

Chemistry
1 answer:
blagie [28]3 years ago
7 0

Answer:

a) no

b) no

c) yes

d) yes

Explanation:

You might be interested in
Match each type of reaction to its amount of potential energy. (PLEASE HELP )
sergejj [24]
Endo is more in reactants and exo is more in products because in exothermic reactions heat is released
8 0
2 years ago
How many moles of carbon are in 7.87x10^7 carbon molecules?
zaharov [31]
There are 6.022*10^23 molecules in 1 mole of carbon
So how many will moles will be 7.87*20^7?
Let the required number of moles be ‘x’.
1 mole ———6.022*10^23
x moles———7.87*10^7
(Cross multiplication)
x=7.87*10^7/6.022*10^23
Therefore x=1.3*10^-16
6 0
2 years ago
When the equation Al(OH)₃ + H₂SO₄ ---> Al₂(SO₄)₃ + H₂O is balanced, the sum of the balancing coefficients is
denis-greek [22]

Answer:

The answer to your question is the letter D. 12

Explanation:

Unbalanced chemical reaction

               Al(OH)₃  +  H₂SO₄  ⇒   Al₂(SO₄)₃  +  H₂O

           Reactants              Elements         Products

                  1                            Al                      2

                  1                            S                       3

                  5                            H                      2

                  7                            O                      13

Balanced chemical reaction

              2Al(OH)₃  +  3H₂SO₄  ⇒   Al₂(SO₄)₃  +  6H₂O

           Reactants              Elements         Products

                  2                            Al                      2

                  3                            S                       3

                 12                            H                     12

                 18                            O                     18

Sum up the coefficients

Result = 2 + 3 + 1 + 6

          = 12              

5 0
3 years ago
Which is the command center of the body​
ankoles [38]

Answer:

nervous system

or u can say brain too

Explanation:

hope this is what u want

4 0
2 years ago
Read 2 more answers
the energy transformation that occurs when a firework goes off is a chemical to thermal to light and sound. however, some of the
quester [9]

Answer:

false

Explanation:

energy can't be destroyed

7 0
2 years ago
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