Other Chemistry Answers

I have 2 questions

1.The amount of radiation from natural radioactive decay is about ________ times higher than the amount you receive from a dental x-ray.


2.The rays and particles emitted by a radioactive source are called ___________.

Acetic acid has a Ka = 1.78×10-5. Determine the pH of a 0.250 M solution of

acetic acid

find the heat capacity at constant volume of 5.0mol of a monoatomic ideal gas

What is the hydroxide-ion concentration of an aqueous solution having a pH of 4.72?

What's the pH of an acid that has a hydronium ion concentration of 1.905 × 10⁻⁵ mol/L?

What's the pH of an acid that has a hydronium ion concentration of 1.00 x 10⁻¹⁰?

What is the hydroxide-ion concentration of an aqueous solution having a hydronium-ion concentration of 1.905 × 10⁻⁵ mol/L?

The base in the forward reaction is ________. HCO₃⁻ + H₂O → H₂CO₃ + OH⁻


H₂O

HCO₃⁻

OH⁻

H₂CO₃

Which of the following acids is the weakest acid?


hypochlorous acid, Kₐ = 3.5 × 10⁻⁸

nitrous acid, Kₐ = 4.5 × 10⁻⁴

acetic acid, Kₐ = 1.8 × 10⁻⁵

hydrogen peroxide, Kₐ = 2.4 × 10⁻¹²

Which of the following solutions would you expect not to conduct electricity?


HCl in water

sugar in water

NaCl in water

H₂SO₄ in water