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denpristay [2]
3 years ago
13

Which statement is correct?The enthalpy of the reaction is –184.6 kJ, and the reaction is exothermic.

Mathematics
2 answers:
Sav [38]3 years ago
8 0

Answer:

wich one is it???

Step-by-step explanation:

mafiozo [28]3 years ago
6 0

Answer:

The correct statements are :

1. The enthalpy of the reaction is -184.6 kJ, and the reaction is exothermic.

2. The enthalpy of the reaction is 184.6 kJ and the reaction is endothermic.

Step-by-step explanation:

Enthalpy of reaction is amount of heat absorbed or released during the reaction.

If energy is required, enthalpy of reaction is positive and if energy is released the enthalpy of reaction is negative.

Exothermic reaction: The chemical change is accompanied by the release of heat energy

Endothermic reaction: The chemical change is accompanied by the absorption of heat energy.

So, from the above definitions, it is clear that the enthalpy of reaction of a exothermic reaction is negative and that of a endothermic reaction is positive.


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Find area of triangle ​
ivanzaharov [21]

Answer:

49.1 cm² (round to nearest 10)

Step-by-step explanation:

- use trigonometry to find the <em>h</em><em>e</em><em>i</em><em>g</em><em>h</em><em>t</em><em>(</em><em>h</em><em>)</em><em> </em>of the triangle

- substitute height and base(b) 12cm into the formula

<em>A</em><em> </em><em>=</em><em> </em><em>½</em><em> </em><em>×</em><em> </em><em>b</em><em> </em><em>×</em><em> </em><em>h</em><em> </em><em>.</em>

7 0
3 years ago
if f(1) = -5 and f(n) = f(n-1) +7, find the first four terms and the common difference of the sequence
Alex_Xolod [135]

Answer:

- 5, 2, 9, 16 and d = + 7

Step-by-step explanation:

to obtain the first four terms substitute n = 2, 3, 4 into the recursive formula

f(1) = - 5 ← given

f(2) = f(1) + 7 = - 5 + 7 = 2

f(3) = f(2) + 7 = 2 + 7 = 9

f(4) = f(3) + 7 = 9 + 7 = 16

common difference d = 16 - 9 = 9 - 2 = 2 - (- 5) = 7



6 0
3 years ago
What is 372 divided by 2
raketka [301]
372 / 2 = 186 <=======
4 0
3 years ago
Read 2 more answers
Given an integer, how do you find it's opposite?
Dimas [21]
Given an integer, how do u find its opposite....

change the sign

example :
2....its opposite is -2
-3...its opposite is 3
5....its opposite is -5
-4...its opposite is 4
6 0
3 years ago
PLEASE HELP!!!!
Semmy [17]
You should put 4 as x, -3 as y and a as slope to make an equation :
- 3 =  a \times 4
then you can find the slope and the correct equation of the line :

the slope is :
- 3 = 4a \\ a =  \frac{ - 3}{4}
so the equation of the line will be
y =  \frac{ - 3}{4}  x
D is true
hope this helps
5 0
3 years ago
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