Which of the following is the most stable isotope?

a. carbon-14

b. uranium-235

c. francium-227

d. plutonium-238

Frank pulls down on a garage door with a force of 80 N. If the door weighs 210 N, what is the net downward force on the door?

Which of the following solutions is the most acidic? all of the solutions are basic a solution with pH = 3 a solution with pH = ggh

A hiker began a hike with a pint canteen full of water. One pint equals 16 fluid ounces. At the end of the hike, 7.0 fluid ounces of water remained. What percent of the water was used during the hike? a. 78b. 44C. 56d. 13

a 3.0 M solution of HCl can be prepared from a 12.0 M solution by diluting 30 L of the 12.0 M solution ith suffient distilled water to a final volume of

For the reaction 2ch4 (g) ⇌c2h2 (g) + 3h2 (g) k = 0.135 at 1608 ∘c. what is kp for the reaction at this temperature? express your answer numerically.

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Wat is a redox reaction

What is the difference between an organic and inorganic molecule