Which of these substances has the highest poh? 0.10 m hcl, ph = 1 0.001 m hno3, ph = 3 0.01 m naoh, ph = 12

0.10 M HCl, pH = 1  

Explanation: pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxide ion concentration.

1. 0.10 M , pH=1

2. 0.001 M , pH=3

3. 0.01 M , pH=12

Thus 0.10 M HCl, pH = 1  has highest pOH.

which three statements are true about all alloys?

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =