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3 years ago

Please help ill give brainlist

Mathematics

2 answers:

9966 [12]3 years ago

6 0

Answer:

Not sure about question 2 but question 3 is 3/5

Step-by-step explanation:

It's absolute value, so it must come out as a positive.

san4es73 [151]3 years ago

3 0

Answer:

2. 11

3. 3/5

Step-by-step explanation:

number three i'm not 100% sure but ik number 2

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Ill give brainliest

Savatey [412]

C. For sure. Hope it helps

6 0

3 years ago

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andrew-mc [135]

For the reaction,

$CO(g) + H_2 O(g) = CO_2(g) + H_2(g)$

Initial concentration:

0.1M , 0.1M , 0 , 0

Let 'x' mole per litre of each of theproduct be formed.

At equilibrium:

(0.1 – x)M , (0.1 – x)M , xM , xM

where x is the amount of Carbon dioxide and Hydrogen, at equilibrium.

Hence, equilibrium constant can be written as,

$K_c = \frac{x²}{(0.1 – x)²} = 4.24$

→ x² = 4.24 (0.01 + x² – 0.2x)

→ x² = 0.0424 + 4.24 x² - 0.848x

→ 3.24x² - 0.848x + 0.0424 = 0

a = 3.24, b = -0.848, c = 0.0424

(for quadratic equation ax² + bx+c=0)

$x = \frac{( - b \: ± \: \sqrt{ {b}^{2} - 4ac) } }{2a}$

$= > x = \frac{ - ( - 0.848 \: ± \: \sqrt{( - 0.848)^{2} - 4(3.24)(0.0424) } }{2 \times 3.24}$

$= > x = \frac{ - 0.848±0.4118}{6.48}$

$x_1 = \frac{0.848 - 0.4118}{6.48} = 0.067$

$x_2 = \frac{0.848 + 0.4118}{6.48} = 0.194$

Here, the value 0.194 should be neglected because it will give concentration of the reactant which is more than initial concentration.

∴ The equilibrium concentrations are :-

$[CO_2] [H_2] = x = 0.067M$

$[CO] [H_2 O] = 0.1 - 0.067 = 0.033M$

7 0

3 years ago

Julie will build a rectangular pen for her dog against a barn. A wall from the barn will form one side of the pen, She has 32 m

IRISSAK [1]

8 meters by 16 meters

6 0

4 years ago

PLEASE ANSWER, I AM STRUGGLING! WILL GIVE POINTS! <3

Oliga [24]

X/2 = 68.2
Given that Colin’s number is X, he divided it by 2. Hence it will be x/2 =68.2. Hope this helps! :)

7 0

3 years ago

Read 2 more answers

Someone help please !

finlep [7]

Each line between 0 and 1 is 1/10 ( there are 10 lines)

First arrow is on the 3rd line so would be 3/10

The next arrow is 3 away from that so would be 3/10

The 3rd arrow is 2 away from the 2nd so would be 2/10

3/10 + 3/10 + 2/10 = 8/10

The answer is b

4 0

3 years ago