What causes atoms to form covalent bonds?

How will the concentration of H+ and OH− ions change when a substance with a pH 11.4 is added to water?

Anna35 [415]

Answer:

option d is the answer

hope it helps

3 0

3 years ago

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In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs of wafers prior to metalliza

Reptile [31]

Sample means for solutions 1 and 2 are 19.27 and 10.32 respectively

In semiconductor manufacturing,

The total for answer 1 is given by:

9.7+10.5+9.4+10.6+9.3+10.7+9.6+10.4+10.2+10.5 = 192.7

The sample size is 10 and provides us with

192.7/10 = 19.27

For solution 2, the sum is given by:

10.6+10.3+10.3+10.2+10.0+10.7+10.3+10.4+10.1+10.3 = 103.2

The sample size is 10, this gives us

103.2/10 = 10.32

The total for answer 2 is given by:

10.6+10.3+10.3+10.2+10.0+10.7+10.3+10.4+10.1+10.3 = 103.2

The sample size is 10 and provides us with

103.2/10 = 10.32

Learn more about semiconductor manufacturing here brainly.com/question/22779437

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In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs of wafers prior to metalization. The etch rate is an important characteristic in this process and is known to follow a normal distribution. Two different etching solutions have been compared, using two random samples of 10 wafers for each solution. Assume the variances are equal. The etch rates are as follows (in mils per minute): Solution 1 Solution 2 9.7 10.6 10.5 10.3 9.4 10.3 10.6 10.2 9.3 10.0 10.7 10.7 9.6 10.3 10.4 10.4 10.2 10.1 10.5 10.3 Calculate sample means of solution 1 and solution 2

4 0

1 year ago

How do you write 1,680 in a scientific notation will make brainlesist i know the anser so im making people that anser corectly b

frez [133]

1.68 × 103.

Explanation:

5 0

4 years ago

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A students has a sample of rock that has a mass of 25 grams and when placed in water has displaced the water about 10 ml. What i

ICE Princess25 [194]

It is 2.5g/ml. You can find this answer by taking the mass (25g) and dividing it by the volume (10ml) and you will get your answer of 2.5g/ml.

8 0

2 years ago

Consider the following reversible reaction. mc030-1.jpg What is the equilibrium constant expression for the given system?

Ann [662]

Since you have not included the given reaction, I am going to explain you how to solve these kind of problems.

1) The chemical equilibrium is a dynamic process. It means that in an equilibrim reaction there are two rectaions, the forward reaction and the reverse reaction whose velocities are the same.

2) The general equation of a a chemical reaction in equlibrium is:

aA + bB ⇄ cC + dD
Where A and B are the reactants, C and D are the products, and a, b, c, d, are the coefficientes in the balanced equation.

3) So, the equilibrium law is:

$Keq= \frac{C]^c[D]^d}{[A]^a[B]^b}$

Where Keq is the constant of equilibrium

4) To complete the explanation, I am going to deal with an example:

i) Consider the equlibrium reaction between hydrogen and iodine:

H₂ (g) + I₂(g) ⇄ 2HI(g)

ii) The forward reaction is H₂ (g) + I₂(g) → 2HI(g)

iii) The reverse reaction is 2HI (g) → H₂ (g) + I₂(g)

iv) The law of equilibrium is:

$Keq= \frac{[HI]^2}{[H_2][I_2]}$

4 0

3 years ago

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