Air that is less dense , while air that is more dense .

Chemistry

1 answer:

lubasha [3.4K]3 years ago

5 0

Air that is less dense Speeds up, while air that is more dense Slows Down.

(please mark brainiest I need for new rank)

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In a cathode ray tube, the number of electrons that reach the fluorescent screen is controlled by the

lutik1710 [3]

<span>Grid

The cathode serves as the positive terminal and the anode as the negative terminal. The flow of electrons is from the cathode to the anode.</span><span>The relationship between a cathode and an anode involves electrons. An example of this is reaction that takes place in an electrolytic cell. It has a cathode compartment, an anode compartment and a salt bridge that divides the compartment. The movement of electrons is from the cathode to the anode. </span>

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4 years ago

A solution is prepared by mixing 0.3355 moles of NaNO3 (84.995 g mol-1) with 235.0 g of water (18.015 g mol-1). Its density is 1

larisa86 [58]

Answer:

Molality = 1.428m

Explanation:

Molality, m, is an unit of concentration defined as the ratio between moles of solute and kg of solvent:

Molality: Moles solute / kg solvent.

In the problem, water is the solvent (Is the compound in the higher quantity) whereas NaNO₃ is the solute.

Moles of solute: 0.3355moles NaNO₃.

Kg solvent:

$235.0g\frac{1kg}{1000g} = 0.2350kg$

Thus, molality of the solution is:

Molality = 0.3355 moles NaNO₃ / 0.2350kg

<h3>Molality = 1.428m</h3>

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4 years ago

What is the covalent compound name for HO3

masya89 [10]

Answer:

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3 years ago

Calculate ΔH⁰298 (in kJ) for the process P(s) + 5/2 Cl2(g) → PCl5(g) from the following information.

Viefleur [7K]

Answer:

$\Delta H_{298}^{0}$ for the process is -375 kJ

Explanation:

Given reaction is a combination of the two given elementary steps.

Summation of change in standard enthalpy ( $\Delta H_{298}^{0}$ )of the two elementary reactions give $\Delta H_{298}^{0}$ of the reaction $P(s)+\frac{5}{2}Cl_{2}(g)\rightarrow PCl_{5}(g)$ .