1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
r-ruslan [8.4K]
3 years ago
6

Which number represents an acidic pH, 4 or 9? _______

Chemistry
2 answers:
AVprozaik [17]3 years ago
8 0
The calculation of pH is based on the activity (aH) of hydrogen ions (H+) dissolved in solution. Specifically, the pH range of numbers is based on a logarithmic scale:

pH=-log (aH)

Log functions are used to rescale very large numbers (or very small numbers) into values much closer to 1. This is often done to deal with more reasonable
Numbers (for pH, 1 to 14). Mathematically, the negative sign in the formula means that pH must be less than 1.


The lower the number on the pH scale, the greater the concentration of hydrogen ions and the greater the material's acidity. The higher the number assigned on the pH scale, the greater the concentration of hydroxide ions and the more basic, or alkaline, the material.

The answer is 4.
densk [106]3 years ago
5 0
I took a test with this question and I got 4 and it was right.
You might be interested in
The symbol for gold is<br> a. go.<br> b. g.<br> c. au.<br> d. au.
Zolol [24]
Au is the symbol for gold. It comes from Latin word for gold, which is Aurunum. Its atomic number is 79. 
7 0
3 years ago
Read 2 more answers
Answer to A please! ASAP
Tanya [424]
The answer is electron
5 0
3 years ago
Which member of each pair is more soluble in water? Why?<br> (a) CH₃CH₂OCH₂CH₃(l) or CH₃CH₂OCH₂(g)
Anna [14]

CH₃CH₂OCH₂ is more soluble in water because it has shorter hydrocarbon chain.

<h3>What is hydrocarbon?</h3>

Hydrocarbon is defined as the compound which contain hydrocarbon and carbon atoms.

The carbon atom attached to each other to form framework and hydrogen atom attach to them in different ways to give different configuration. One of the most popular hydrocarbon compound is diamond.

<h3>Solubility of hydrocarbon in water</h3>

Hydrocarbon is non polar compound whereas water is polar compound. So, hydrocarbon is in soluble in water. But as they have weak intermolecular interactions known as London dispersion forces i.e. Instantaneous dipole-induced dipole interactions.

make them less soluble in water.

Greater the hydrocarbon chain lesser will be the solubility of ketone in water. On the other hand, lesser the hydrocarbon chain greater will be the solubility of ketone in water.

Thus, we concluded that the CH₃CH₂OCH₂ is more soluble in water because it has shorter hydrocarbon chain.

learn more about hydrocarbon:

brainly.com/question/16020705

#SPJ4

7 0
1 year ago
The two naturally occurring isotopes of antimony, 121Sb (57.21 percent) and 123Sb (42.79 percent), have masses of 120.904 and 12
Alex

Answer:

The correct answer is option c.

Explanation:

Formula used to determine an average atomic mass :

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i

Mass of isotope Sb-121 = 120.904 amu

Fractional abundance of Sb-121 = 57.21% = 0.5721

Mass of isotope Sb-123 = 122.904 amu

Fractional abundance of Sb-123 = 42.79% = 0.4279

Average atomic mass of Sb:

120.904 amu\times 0.5721+ 122.904 amu\times 0.4279=121.7598 amu \approx 121.76 amu

7 0
3 years ago
When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens
adoni [48]

Answer: assume pathogens are present and treat the samples accordingly

Explanation:

When investigators are unable to conclusively ascertain the source of a biological sample found at a crime scene, the correct thing to do is to treat it as if pathogens are present in it and handle it according to set rules on how to handle pathogens.

This is done to ensure that if a pathogen is indeed present, it would not cause a health emergency by infecting those who come in contact with the samples at the scene.

3 0
3 years ago
Other questions:
  • "a basic experiment involves a minimum of ________ participant group(s)."
    13·1 answer
  • Boyle's law states that gas volume is Boyle's law states that gas volume is inversely proportional to temperature. directly prop
    5·2 answers
  • A population of rabbits is separated by a mountain range. Which of the following is most likely to occur?
    10·2 answers
  • Calculate the Molecular or Formula massof each of the following:
    8·1 answer
  • An example of a double reed musical instrument is the
    10·2 answers
  • WILL MARK BRAINLIEST!!<br><br> What is the percent composition of each element in barium nitrate?
    14·1 answer
  • How many atoms are in 3.5 moles of arsenic atoms?
    12·1 answer
  • How are reactants different than products?<br>​
    7·1 answer
  • Please help it's due today
    12·1 answer
  • Use the van der Waals equation and the ideal gas equation to calculate the pressure for 1.50 mol He gas in a 1.00 L container at
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!