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babymother [125]
2 years ago
6

Which of the following describes a characteristic of water that helps it in dissolving a wide range of chemicals and biomolecule

s? (5 points)
It has a partial negative charge on oxygen and a partial positive charge on hydrogen.

It has a linear molecular structure with H-O-H arranged in a straight line.

It requires a high amount of heat to raise or drop its temperature.

It has completely non-polarized O-H bonds.
Chemistry
1 answer:
Papessa [141]2 years ago
8 0
<h2>Hey there!</h2>

<h3>The correct option is (A) It has a partial negative charge on oxygen and a partial positive charge on hydrogen.</h3>

<h3>☆ Explanation:</h3>

¤ As water has the ability to form hydrogen bonds which makes it an excellent solvent.

¤ For this ability of water it can dissolve many different kinds of molecules.

<h2>Hope it helps </h2>

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The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder,
soldi70 [24.7K]

Answer:

The correct option is: Oxygen

Explanation:

According to the Ideal Gas Equation: P.V = n. R.T

Here, R - ideal gas constant, P - absolute pressure, V - volume, T - temperature, n - number of moles of gas.

Also, n = given mass of gas (w) ÷ molar mass of gas (M)

<u>Given</u>: P = gauge pressure + barometric pressure = 1 atm + 1 atm = 2 atm; V = 5 L; w = 13 g; R = 0.08206 L·atm·mol⁻¹·K⁻¹; T = 27 °C = 27°C + 273.15 = 300.15K                          (∵ 0°C = 273.15 K).

Since, P.V = n. R.T = (w ÷ M) . R.T

⇒ M = (w. R.T) ÷  (P.V) = (13g × 0.08206 L·atm·mol⁻¹·K⁻¹ × 300.15K)÷(2atm × 5 L)

⇒ M = 32 g.mol⁻¹

<u>As we know, the molar mass of oxygen gas (O₂) is 32 g.mol⁻¹.</u>

<u>Therefore, the gas is </u><u>oxygen</u><u>.</u>

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