Answer the riddle bellow

Which of the following most directly explains the importance of improved agricultural productivity.

Leno4ka [110]

Second choice

Explanation

3 0

3 years ago

Read 2 more answers

What is the solubility of mg(oh)₂ at a ph of 12.70? (ksp mg(oh)₂ is 1.6 × 10⁻¹³)

Feliz [49]

Based on the calculations, the solubility of mg(oh)₂ at a pH of 12.70 is equal to 3.4 × 10⁻⁵ M.

<u>Given the following data:</u>

Ksp of mg(oh)₂ = 1.6 × 10⁻¹³

pH = 12.70

pH is an abbreviation for the power of hydrogen ions and it can be defined as a measure of the molar concentration of hydrogen ions that are present in a given solution. Thus, the power of hydrogen ions (pH) is generally used to identify or specify the acidity, neutrality, or basicity of any chemical solution.

First of al, we would write the properly balanced chemical equation for this chemical reaction:

$Mg(OH)_2(s)\rightleftharpoons Mg^{2+} (aq)+ 2OH^{-}(aq)$

Mathematically, the Ksp for the above chemical reaction is given by:

Ksp = [Mg²⁺][OH⁻]²

Ksp = [x][2x]²

1.6 × 10⁻¹³ = 4x³

x = ∛4 × 10⁻¹⁴

x = 3.4 × 10⁻⁵ M.

Read more on solubility here: brainly.com/question/3006391

3 0

2 years ago

Industry standards suggest that 9 percent of new vehicles require warranty service within the first year, Jones Nissan in Sumter

aleksklad [387]

Answer:

so probability none of these vehicles requires warranty service is 0.389416

Explanation:

given data

new vehicles require warranty service π = 9 % = 0.09

sold nissan n = 10

solution

As we know here binomial probability formula that is

P(x) = $_nC_x \ \pi ^x \ (1-\pi )^{n-x}$ ......................1

so we use here combination formula that is

$_nC_r = \frac{n!}{r!(n-r)!}$ .................2

so probability none of these vehicles requires warranty service is

P(0) = $_{10}C_0 \ \pi ^0 \ (1-\pi )^{10-0}$

P(0) = $\frac{10!}{0!(10-0)!} (0.09^0) (1-0.09)^{10}$

P(0) = 0.389416

so probability none of these vehicles requires warranty service is 0.389416

8 0

4 years ago

You will submit your completed work from the "explore: famous people" assignment here. Type or copy/paste your response directly

Zanzabum

Answer:

Explanation:

Luis Fonsi, is a Puerto Rican singer, songwriter and actor. He is known for multiple songs, one of them is "Despacito", featuring Puerto Rican rapper Daddy Yankee.

It's short and exotic

4 0

3 years ago

Your academic calendar has been distracted by the global pandemic, such that, you are to teach your class from the house. Outlin

tatyana61 [14]

The correct answer to this open question is the following.

During this pandemic moments that students have to stay at home and taking classes, I would use the proper hardware to teach good video classes. Of course, a good computer or lap tot with modern hardware capacities such as "intel Pentium" or higher. A good and high-speed internet connection will help me to efficiently use all the tools and educational apps such as the one needed to teach video class. These are google meet and zoom.

I will use the following tools to reach all pupils. First, the classroom of Google to have all the homework information on one site. I would use Google Drive to store all the information and evidence of the semester. Another good tool is Canva, for the students to elaborate all their infographics needed to do homework. For better school presentations I would also use "gneally," a good presentation system that has room for a lot of animation.

8 0

4 years ago