Answer: As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.
Explanation:
The correct answer is acids and bases
the arrheius theory, introduced in 1887 by the Swedish scientist Svante Arrhenius<span>, that </span>acids<span> are substances that dissociate in water to yield electrically charged atoms or molecules, called </span>ions<span>, one of which is a </span>hydrogen ion<span> (H</span>+<span>), and that </span>basesionize in water to yield hydroxide ions (OH−). It is now known that the hydrogen ion cannot exist alone in water solution; rather, it exists in a combined state with a water molecule, as the hydronium ion (H3O+<span>). In practice the hydronium ion is still customarily referred to as the hydrogen ion.</span>
Answer:
Answer to 3. Calculate the molarity of a solution prepared by diluting 125 mL of 0.400 M K, Cr, , with 875 mL of water? 4. What is...
Missing: o, | Must include: o,
Explanation:
Answer:
we know, at STP ( standard temperature and pressure).
we know, volume of 1 mole of gas = 22.4L
weight of 1 Litre of hydrogen gas = 0.09g
so, weight of 22.4 litres of hydrogen gas = 22.4 × 0.09 = 2.016g ≈ 2g = molecular weight of hydrogen gas.
similarly,
weight of 2L of a gas = 2.88gm
so, weight of 22.4 L of the gas = 2.88 × 22.4/2 = 2.88 × 11.2 = 32.256g
hence, molecular weight of the gas = 32.256g
vapor density = molecular weight/2
= 32.256/2 = 16.128g
hence, vapor density of the gas is 16.128g.
Explanation:
