4. Which statement is true about alkali metals?

Chemistry

2 answers:

Svet_ta [14]4 years ago

8 0

I think its most likely to be A,

Tasya [4]4 years ago

4 0

The correct answer is option A, that is, some of them explode when exposed to water.

The alkali metals refer to a group in the periodic table comprising the chemical elements sodium, lithium, rubidium, potassium, francium, and cesium. This group is situated in the s-block of the periodic table. The alkali metals are all soft, shiny, highly reactive metals at standard pressure and temperature, and easily lose their outermost electron to produce cations with charge +1.

The alkali metals are the most reactive metals found in the periodic table, they all react dynamically or some even explosively with cold water, leading to the displacement of hydrogen

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If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, what temperature is the gas?

iogann1982 [59]

If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

First, calculate the moles of the gas using the gas law,

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 5.2 atm

V= 500 mL =0.5 L

n=?

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