Answer:
The Most Effective Treatments for Acid Reflux
Antacids-These medications help to neutralize the stomach acid and include Mylanta, Tums, and Rolaids.
H-2 Receptor Blockers-These medications work to decrease the amount of acid that is made in the stomach.
Reflux medication consist of: salts of calcium, magnesium, or aluminum
Acid Reflux is: A digestive disease in which stomach acid or bile irritates the food pipe lining.
This is a chronic disease that occurs when stomach acid or bile flows into the food pipe and irritates the lining. Acid reflux and heartburn more than twice a week may indicate GERD.
Symptoms include burning pain in the chest that usually occurs after eating and worsens when lying down.
Relief from lifestyle changes and over-the-counter medications is usually temporary. Stronger medication may be needed.
Answer:
Explanation:
1. Rounding
2 0<u>83 193</u> cm
You want to round to two significant figures.
You replace all the underlined digits (all those after the first two digits) with zeroes.
The rule is: If the first figure dropped (8) is greater than 5, increase the last figure kept (0) by 1.
Then, 2 0<u>83 193</u> cm becomes 2 100 000 cm
2. Converting to scientific notation
A number in scientific notation has the form
N × 10ⁿ
where N is a decimal number called the mantissa and n is an integer called the exponent.
We must have 1 ≤ N < 10
(a) Determine the mantissa
Move the decimal place to the left to create a new number between 1 and 10.
2 1<u>00 000</u> ⟶ 2.1<u>00 000</u>; N = 2.1
(b). Determine the exponent.
The exponent is the number of times you moved the decimal to get the mantissa.
You moved the decimal six places to the left, so the exponent n = 6.
(c). Write the number in scientific notation
Answer:
All these theories can be grouped into the following two general classes. Formation of the solar system quickly and violently: Old planetesimal hypotheses, Nebular hypotheses, new planetesimal hypotheses and tidal hypotheses are some examples of it.
Explanation:
Answer is: <span>percent ionization of aqueous acetic acid solution is 0.341%.
c(CH</span>₃COOH) = 1.55 M.
Ka(CH₃COOH) = 1.8·10⁻⁵.
Chemical reaction: CH₃COOH ⇄ CH₃COO⁻ + H⁺.
[CH₃COO⁻] = [H⁺] = x.
[CH₃COOH] = 1.55 M - x.
Ka = [CH₃COO⁻] · [H⁺] / [CH₃COOH].
1.8·10⁻⁵ = x² / (1.55 M - x).
Solve quadratic equation: x = 0.0053 M.
percent of ionization:
α = 0,0053 M ÷ 1.55 M · 100% = 0,341%