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
rusak2 [61]
3 years ago
12

When marco is sick, he tests the ph of his saliva and finds that it is 6.1. what is the hydrogen ion concentration of his saliva

? (round your answer to seven decimal places.)?
Chemistry
1 answer:
andriy [413]3 years ago
5 0
<span>Hydrogen ion concentration results from the addition of an acid to a substance. Since we know Marco's pH is 6.1, we can easily calculate the hydrogen ion concentration. The formula for pH is: pH = -log [H+]. Therefore, at pH = 5.5, [H+] = 10-5.5. This results in 3.16 x 10-6 M or [H+] = 0.0000032 M.</span>
You might be interested in
Describe the structure of an Atom (HELP!)
Marat540 [252]

Answer:

The answer is A.

Explanation:

Neutrons and protons are located in the dense middle of the atom called the nucleus, and electrons are located on the electron cloud located outside of the nucleus.

4 0
3 years ago
Need some help, please. Explain why anions are always larger than the atoms from which they are derived, while cations are alway
ANTONII [103]

The question requires us to explain the differences in radii of neutral atoms, cations and anions.

To answer this question, we need to keep in mind that a neutral atom presents the same number of protons (positive particles) and electrons (negative particles). Another important information is that the protons are located in the nucleus of the atom, while the electrons are around the nucleus. Also, there is an electrostatic force between protons and electrons, which means that they the protons tend to attract the electrons to the nucleus.

While a neutral atom presents the same number of protons and electrons, a cation is an ion with positive charge, which means it has lost one or more electrons. In a cation, the balance between protons and electrons doesn't exist anymore: now, there is more positive than negative charge (more protons than electrons), and the overall attractive force that the protons have for the electrons is increased. As a result, the electrons stay closer to the nucleus and the radius of a cation is smaller than the neutral atom from which it was derived.

On the other side, anions present negative charge, which means they have received electrons. Similarly to cations, the balance between protons and electrons doesn't exist anymore, but in this case, there are more electrons than protons. In an anion, the overall attractive force that the protons have for the electrons is decreased. As a result, the electrons are "more free" to move and, as they are not so attracted to the nucleus, they tend to stay farther from the positive nucleus compared to the neutral atom - because of this, the radius of an anion is larger than the neutral atom from which it was derived.

3 0
1 year ago
The bonding found in calcium chloride is
photoshop1234 [79]
<span>The bonding found in calcium chloride is i</span>onic bonds. 

I hope this helps!
4 0
3 years ago
Examination of a cell by transmission electron microscopy reveals a high density of ribosomes in the cytoplasm. This observation
True [87]

Answer:

The answer is the B. Proteins

Explanation:

It is known that Ribosomes are the factory to synthesize proteins. This is their function.  In cell zones where ribosomes are abundant, proteins are actively produced

3 0
2 years ago
A volcano forms near a tectonic plate boundary. What can you infer about the formation of this volcano?
valkas [14]

Answer: There are three main places where volcanoes originate: Hot spots, Divergent plate boundaries (such as rifts and mid-ocean ridges), and. Convergent plate boundaries (subduction zones)

Explanation:

Volcanoes often form in the areas where tectonic plates make contact. The friction created between two plates by the constant movement melts the Earth's crust, causing the rock underneath the crust to turn into magma due to the great temperatures created by friction. ... Volcanoes may be formed at subduction zones

5 0
2 years ago
Other questions:
  • Manganese forms several oxides when combined with oxygen. One of the oxides (Oxide 1) contains 63.2% of Mn and another oxide (Ox
    11·1 answer
  • Which formula represents the compound commonly known as phosphine <br> PH<br> PH2<br> PH3<br> PH4
    15·2 answers
  • 58.5g of sodium iodide are dissolved in 0.5dm3. what concentration would this be?
    6·1 answer
  • If the results of an experiment disprove a hypothesis, then the a. results should not be reported. b. hypothesis is just a theor
    7·1 answer
  • Which subatomic particles contribute to an atom's mass number but not its atomic number
    11·1 answer
  • a 182.4g sample of germanium-66 is left undisturbed for 22.5 hours. At the end of that period, only 5.70g remain. What is the ha
    5·1 answer
  • What kind of energy makes your hair frizzy
    12·1 answer
  • Help please all please
    7·2 answers
  • The amount of kinetic energy an object has depends on its:
    15·2 answers
  • The _______ atom in a water molecule points toward the sodium ion because its partial _______ charge is attracted to the sodium
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!