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andre [41]
3 years ago
12

HELP ASAP PLEASE!!! Formulas for acids usually begin with one or more _____ ions.

Chemistry
1 answer:
Yuki888 [10]3 years ago
8 0

hydrogen ions

H2SO4

HNO3

H3PO4

etc

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Glycolic acid, which is a monoprotic acid and a constituent in sugar cane, has a pKa of 3.9. A 25.0 mL solution of glycolic acid
slava [35]

Answer:

pH of resulting solution = 7.98

Explanation:

The balanced equation  

HA + NaOH - Na+ + A- + H2O

Number of moles of A = Number of moles of HA  = Number of moles of NaOH

= 35.8/1000 * 0.020 = 0.000716 mol

Initial concentration of A = 0.000716/0.0608 = 0.01178 M

pKb = 14 – pKa = 14 -3.9 = 10.1

Kb = 10^{-Kb} = 10^{-10.1} = 7.943 * 10^-11

Kb = [HA][OH-]/[A-]

Kb = a^2/(0.01178 -a) = 7.943 * 10^-11

a^2 + 7.943 * 10^-11 a – 9.357 * 10^-13 = 0

a = 9.673 * 10^-7

OH- = a = 9.673 * 10^-7 M

pOH = -log [OH-] = -log (9.673 * 10^-7) = 6.02

pH = 14-6.02 = 7.98

8 0
2 years ago
According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of th
grandymaker [24]
The masses are always equal. Since matter can not be created nor destroyed, you will have the same amount of mass as you did before the reaction as you do after. 
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2 years ago
What is an ionic bond in an electron?
Igoryamba
Its the complete transfer of valence electrons between atoms 
7 0
3 years ago
I need help please thank you
Kazeer [188]

Answer:

In science, sound is defined as the transfer of energy from a vibrating object in waves that travel through matter. Most people commonly use the term sound to mean what they hear when sound waves enter their ears. The tree above generated sound waves when it fell to the ground, so it made sound according to the scientific definition

Explanation:

sound waves

4 0
2 years ago
Read 2 more answers
How Many Significant Figures are there in 505
cupoosta [38]

Answer:

there are three significant digits.

Explanation:

Thus,  21.8, 0.283 and 567 all have three significant digits. 2. Zeros appearing between non-zero digits are significant. Thus, 505 and 0.206 have three significant digits, while 50,005 has five significant digits.   (from google)

7 0
3 years ago
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