Boyle's law of ideal gas: This law states that the volume of a gas is inversely proportional to its pressure at a constant temperature. Acc to this law we can write the relation of pressure and volume as:

$PV=Constant$

That means:

$P_{1}V_{1}=P_{2}V_{2}$

From that equation we can calculate Volume of gas at a certain pressure:

P₁=Initial pressure

V₁=Initial volume

P₂=Final pressure

V₂= Final volume

Here P₁, initial pressure is given as 85.0 kPa

V₁, initial volume is given as 525 mL

P₂, final pressure is 65.0 kPa

$P_{1}V_{1}=P_{2}V_{2}$

so,

V_{2}=85\times 525\div 65

=686 mL

Volume of gas will be 686 mL.

8 0

3 years ago

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What is the charge on oxygen (O) when it forms an ion? (1 point) 1+ 1− 2+ 2−

Korolek [52]

Answer:

2–

Explanation:

Oxygen is in the 6th group originally has a charge of 1–, but when oxygen gets two electrons added to make it a stable gas configuration of s2 p6 it changes it to 2– to form an oxide ion

7 0

3 years ago

A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the ca

MrRa [10]

Answer:

1. density = 0.89 g/cm3

2. Yes is possible to identify the liquid

3. ethanolamine

Explanation:

mass = 682 g

volume = 0.767 L = 767 mL or cm3

To calculate the density of the liquid it is necessary to know that the density formula is:

$density=\frac{mass(g)}{volume(cm^{3}) }$

The data obtained is replaced in the formula:

$density=\frac{682g)}{767(cm^{3}) }=0.89\frac{g}{cm^{3} }$

With the given data it is possible to identify the liquid, this because the density value is a basic property of each liquid.

It is possible to determine what liquid it is, since when comparing the value obtained with those reported in the collection of Material Safety Data Sheets (MSOS), the value that agrees is that of ethanolamine.

6 0

4 years ago