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valkas [14]
3 years ago
11

If solution A has a pH that is four pH units greater than that of solution B, how much greater is the H3O+ concentration in solu

tion B than in solution A?
Chemistry
1 answer:
sashaice [31]3 years ago
7 0

10⁴

Explanation:

There is usually a 10-time fold change in H₃O+ ions from one pH level to the other. The lower the pH level the higher the H₃O+ ions. Therefore for  solution A that has a pH that is four pH units greater than that of solution B, then solution B will have;

10⁴ more H₃O+ ions than solution A

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An atom has the electron configuration of 1s22s22p5 how many electrons are in that atom
notsponge [240]

Answer:

There are 9 electrons in this atom.

Explanation:

Electron configuration of this atom: 1s^2\, 2s^2\, 2p^5.

The electron orbitals of an atom are denoted as 1s, 2s, 2p, 3s, 3p, etc. At any given time, an electron in this atom is located in exactly one orbital.

The electron configuration of an atom gives the number of electrons in each orbitals of this atom.

For example, in this atom, the superscript "2" on the right of "1s" means that there are two electrons in the 1s\! orbital of this atom. Hence, 1s^2\, 2s^2\, 2p^5 would translate to:

  • The 1s orbital of this atom contains 2 electrons.
  • The 2s orbital of this atom contains 2 electrons.
  • The 2p orbitals of this atom contain 5 electrons.

Hence, there would be 2 + 2 + 5 = 9 electrons in total in this atom.

7 0
3 years ago
Which statement best describes what the volume of an object represents
Ivenika [448]

Answer:

Volume is the amount of space taken up an object.

6 0
3 years ago
Marcus read that systems provide feedback, or the return of information. Feedback can either cause a change in the system or kee
Rashid [163]
D. Melting glaciers would mean more ice at its top, witch would slow the glaciers down
8 0
3 years ago
Calculate the mass of chloroform that contains 1.00X10^12 molecules of chloroform
Brums [2.3K]

<span>Molar mass of chloroform (CHCl3)
C = 1 * 12 = 12 a.m.u
H = 1 * 1 = 1 a.m.u
Cl = 3 * 35.5 = 106.5 a.m.u
 Molar Mass (CHCl3) = 12 + 1 + 106.5 = 119.5 g / mol
 
Knowing that: The value of Avogadro's constant corresponds to approximately </span>6,02*10^{23} molecules, if chloroform contains 1,00 * 10^{12} molecules. <span> 
We have:
 
</span>1,00 * 10^{12} * 6,02 * 10^{23} = 6,02 * 10 ^ {35} molecules<span>
 
Now, how many grams are there in the chloroform molecule?

grams -------- molecules</span><span>
119,5 </span>→ 6,02 * 10^{23}
x → 6,02 * 10^{35}

6,02 * 10 ^ {23} * x = 119,5 * 6,02 * 10 ^{35}
6,02 * 10 ^ {23}x = 719,39 * 10^{35}
x =  \frac{719,39}{6,02}*10^{35-23}
\boxed{x = 119,5*10^{12}grams}
7 0
3 years ago
Isobutylene is a hydrocarbon used in the manufacture of synthetic rubber. when 0.847 g of isobutylene was subjected to combustio
Firlakuza [10]
Find the mass of C in the 2.657 g CO2:
(2.657 g CO2) / (44.01 g/mol) = 0.06037 mol CO2
Since each mole of CO2 also has 1 mole of C, this is equivalent to 0.06037 mol C.

Find the mass of H in the 1.089 g H2O:
(1.089 g H2O) / (18.02 g/mol) = 0.06043 mol H2O
Since 1 mol H2O has 2 mol H, this is equivalent to (0.06043)*2 = 0.1209 mol H.

Taking the ratio of H to C: 0.1209 / 0.06037 = 2.002 ~ 2
Therefore, the empirical formula of isobutylene is CH2.
6 0
3 years ago
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