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Doss [256]
3 years ago
12

Find the pH of a solution whose H+ concentration is 1.8 x 10-12​

Chemistry
1 answer:
frutty [35]3 years ago
8 0

Answer:

11.74

Explanation:

The formula to find the pH of a solution is..

pH = -log [H⁺]

pH = -log [1.8×10¹²]

pH = 11.74

The answer would be to 2 decimal places because the concentration is two significant digits.

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Give the following number of protons, neutrons, and electrons in the following isotope:
valina [46]

Answer:

47, 68, 47

Explanation:

Let's consider the following isotope: ¹¹⁵Ag.

If we look in the Periodic Table, the atomic number of Ag is 47, that is, silver has 47 protons.

Since ¹¹⁵Ag is neutral it must have the same number of protons that of electrons. Then, it also has 47 electrons.

The number 115 in ¹¹⁵Ag stands for the mass number, which is the sum of protons and neutrons. Then, the number of neutrons is:

p⁺ + n⁰ = 115

n⁰ = 115 - p⁺ = 115 - 47 = 68

The number of protons, neutrons, and electrons in ¹¹⁵Ag is: 47, 68, 47.

3 0
2 years ago
CH4 + 2 O2 → CO2 + 2 H2O
galben [10]

Answer: 64 grams I think not sure.

Explanation:

3 0
2 years ago
what elements would you expect to lose electrons in chemical changes? Potassium, sulfur, fluorine, barium or copper.
Hatshy [7]
Potassium, Barium, and Copper because they are metals, and most metals tend to lose electrons when forming an ion.
8 0
3 years ago
Read 2 more answers
. Based on their position in the periodic table, predict which (of the two elements given) will be more reactive Circle your cho
Vladimir79 [104]

Explanation:

your anawer to the question is A. V and Rb

8 0
3 years ago
The number of atoms present in 2.5 mole of triatomic gas is equivalent to ​
RUDIKE [14]

Answer: 1.41725 X 10^{24} atoms

Explanation:

One male of any gas containing no. of atoms$=6.023\times10^{23}$

2.5 moles of gas containing no. of atoms$=2.5\times6.023\times10^{23}$$=15.0575\times10^{23}$

The given gas is triatomic gas. Hence

No. of atoms$=3\times15.075\times10^{23}$

$=14.1725\times10^{23}$\\$=1.41725\times10^{24}$

6 0
3 years ago
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