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3 years ago

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

Mathematics

2 answers:

arsen [322]3 years ago

4 0

Answer:

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

Step-by-step explanation:

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for .

hram777 [196]3 years ago

3 0

Answer:

The standard enthalpy of combustion of ethene gas, , is at . Given the following enthalpies of formation, calculate for

Step-by-step explanation:

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3. guarts. equal. cups

Gnom [1K]

There are 4 cups in 1 quart.

4 x 3 = 12

3 quarts = 12 cups

Hope this helps. :)

5 0

3 years ago

Read 2 more answers

For the equation, 2x + 6 = 3x - 10, what is the solution

geniusboy [140]

Answer: x=16

Step-by-step explanation:

$2x+6=3x-10$

Subtract 6 on both sides

$2x+6-6=3x-10-6$

$2x=3x-16$

Subtract 3x on both sides

$2x-3x=3x-16-3x$

$-x=-16$

Divide -1 on both sides

$\frac{-x}{-1}=\frac{-16}{-1}$

$x=16$

7 0

3 years ago

Please help with this question if you can

n200080 [17]

Line AE is NOT parallel to line BD. This is because the intercepts made by the lines and the transversals are not proportional

<h3>Parallel lines theorem</h3>

In the given diagram,

$\frac{|AB|}{|ED|} =\frac{|AC|}{|EC|}$

Then,

Line AE is parallel to line BD

From the given information,

|AB| = x = 9

|ED| = 5

|AC| = 9 + 11 = 20

|EC| =5 + 7 = 12

Thus,

$\frac{9}{20}=\frac{5}{12}$

20 × 5 = 9 × 12

100 ≠ 108

∴ The lines are not parallel

Hence, line AE is NOT parallel to line BD. This is because the intercepts made by the lines and the transversals are not proportional

Learn more on Parallel lines theorem here: brainly.com/question/3264266

#SPJ1

8 0

2 years ago

What is the solution to this system of equations?

Mariulka [41]

Answer:

x = 5 and y= 15

Step-by-step explanation:

3x + 2y = 45

4x - y = 5 (multiple both sides by 2)

3x + 2y = 45

8x - 2y = 10

--------------------( add side with side)

11x + 0 = 55

or x= 55/11 = 5

replace x =5 into 4x - y = 5 we have 4*5 - y = 5

20 - y = 5 or y = 20- 5= 15

So x = 5 and y= 15

Have a good day

8 0

3 years ago

Sin * (x - y) , if sin x = 8/17 cos y = 12/37

abruzzese [7]

Answer:

-429/629

Step-by-step explanation:

Use angle difference formula:

sin(x − y) = sin x cos y − sin y cos x

Assuming x and y are in the first quadrant:

sin(x − y) = sin x cos y − √(1 − cos²y)√(1 − sin²x)

Plugging in values:

sin(x − y) = (8/17) (12/37) − √(1 − (12/37)²)√(1 − (8/17)²)

sin(x − y) = (8/17) (12/37) − (35/37)(15/17)

sin(x − y) = -429/629

8 0

3 years ago