Answer False
Explanation: Friction makes it stop at some point. For it to have an unlimited speed goes against beset is first law that states an object in motion with stay in motion unless acted upon by an external force, your force will be the friction of the wheels on the roller coaster
Answer:
HF is the Arrhenius acid and KOH is the Arrhenius base.
Explanation:
An Arrhenius acid dissociates in water to form H+ ions in solution.
An Arrhenius base dissociates in water to form OH- ions in solution.
Write the equations by breaking the compounds into their elements
HF→ H⁺ + F⁻ HF produces H⁺ when added to water, so it is the acid.
KOH→ K⁺ + OH⁻ KOH produces OH⁻ when added to water, so it is the base.
Answer:
19 years
Explanation:
Tritium follows a first-order decay which can be represented by the following expression.
where,
[H]t is the concentration of tritium at a certain time t
[H]₀ is the initial concentration of tritium
k is the rate constant
If we know the half-life (t1/2), we can calculate the rate constant.
Answer:
As the level of carbon dioxide in the blood increases, more H+ is produced and the pH decreases. This increase in carbon dioxide and subsequent decrease in pH reduce the affinity of hemoglobin for oxygen. The oxygen dissociates from the Hb molecule, shifting the oxygen dissociation curve to the right.
Answer:
B: Since 1979, the sun's output has decreased while the Earth has warmed more rapidly than in any 30-year period for centuries.
Explanation: