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olasank [31]
3 years ago
10

o álcool isopropílico é um líquido volátil muito utilizado para limpeza de componentes eletrônicos ele é produzido a partir da h

idrogenação de acetona reação química de acetona com hidrogênio gasoso essa reação é representada pela equação química calcule o delta h da reação com base nas informações das energias de ligação das substâncias envolvidas
Chemistry
2 answers:
wlad13 [49]3 years ago
5 0

qual é a equação

________________________________________________________________________________________________________

alexandr402 [8]3 years ago
4 0

Answer: qual é a equação

Explanation:

________________________________________________________________________________________________________

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What is the area of triangle ABC with vertices A(x¹,y¹), B(x²,y²)and C (x³,y³)??????????<br>​
AlexFokin [52]

Answer:

Area = \frac{1}{2}|x_1(y_2 - y_3)+x_2(y_3 - y_1)+x_3(y_1 - y_2)|

Area = 2\ units^2

Explanation:

Given

A = (x_1,y_1)

B = (x_2,y_2)

C = (x_3,y_3)

Required

Determine the area

The area of a triangle is :

Area = \frac{1}{2}|A_x(B_y - C_y) + B_x(C_y - A_y) + C_x(A_y - B_y)|

By substituting values for the x and y coordinates of A, B and C;

We have:

Area = \frac{1}{2}|x_1(y_2 - y_3)+x_2(y_3 - y_1)+x_3(y_1 - y_2)|

So:

For instance

A = (0,3)

B= (2,1)

C = (2,3)

The area is:

Area = \frac{1}{2}|0(1-3) + 2(3-3) + 2(3-1)|

Area = \frac{1}{2}| 2*0 + 2*2|

Area = \frac{1}{2}| 0 + 4|

Area = \frac{1}{2}|4|

Area = \frac{1}{2} * 4

Area = 2\ units^2

7 0
2 years ago
Which process is a chemical change? burning a match boiling water melting ice breaking glass
Nina [5.8K]

Answer:

Burning a match

Explanation:

A chemical change is where a substance is changed into one or more substances. Basically, a chemical change changes the form of a substance. While, a physical change such as ripping a piece of paper in half will still be a paper just in half(nothing is changed).

Hope this helps!!! PLZ MARK BRAINLIEST!!!

5 0
3 years ago
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What are the conditions to liquefy a gas ?
kykrilka [37]
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3 years ago
How many protons, electrons, and neutrons does 1 H+ isotope contain
nlexa [21]
<h3>Answer:</h3>

H+ contains 1 proton, 0 neutrons, 0 electrons.

<h3>Explanation:</h3>
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  • A hydrogen atom contains 1 proton and 0 neutrons in the nucleus and 1 electron in the energy levels.
  • A hydrogen atom loses an electron to form an ion with 1 proton, 0 neutron and 0 electron.
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3 years ago
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Which change in the h+ ion concentration of an aqueous solution represents a decrease of one unit on the ph scale?
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The answer would be a tenfold increase<span>
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6 0
3 years ago
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