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mixer [17]
3 years ago
9

Why does the reactivity of the alkali metals decrease from cesium to lithium?

Chemistry
1 answer:
Olin [163]3 years ago
7 0

Explanation:

Alkali metals are more reactive since they are available in nature as combined state.

And from top to bottom reactivity increases due to increase in the size of metal and also forces of attraction between nucleus and valency electrons is more hence Valency electrons held less tigthly with nulceus .

Hence less energy(ionizationation)is need to removes electrons.

Hence lithium is least reactive and Cs is more reactive.

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6. What is the equilibrium constant for the following reaction?<br> C+02 = CO2
Orlov [11]
<h3>\tt Kc=\dfrac{[CO_2]}{[C][O_2]}</h3><h3>Further explanation</h3>

Given

Reaction

C+02 = CO2

Required

The equilibrium constant

Solution

The equilibrium constant is the ratio of concentration or pressure between the product and the reactant with each reaction coefficient raised  

The equilibrium constant is based on the concentration (Kc) in a reaction  

pA + qB -----> mC + nD  

\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

So for the reaction :

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8 0
3 years ago
A compound contains 74.2 g Na and 25.8 g O. Determine the Empirical Formula for this compound
Ksenya-84 [330]

Answer:

The empirical formula for the compound is Na2O

Explanation:

Data obtained from the question include:

Sodium (Na) = 74.2g

Oxygen (O) = 25.8g

We can obtain the empirical formula for the compound as follow:

First, divide the above by their individual molar mass as shown below:

Na = 74.2/23 = 3.226

O = 25.8/16 = 1.613

Next, divide the above by the smallest number

Na = 3.226/1.613 = 2

O = 1.613/1.613 = 1

Therefore, the empirical formula is:

Na2O

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Citrate synthase is an enzyme found in the mitochondrial matrix, which is involved in the citric acid cycle.

Learn more about cellular respiration here:

brainly.com/question/2809259

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If the age of the middle layer of a rock sample is between 600 million years and 1 billion years, which of the following could b
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