Question 5 (5 points)

1 answer:

5 0

A) LITHIUM is the least reactive alkali metal

B) FRANCIUM is the most reactive alkali metal

C) BERYLLIUM is the least reactive alkaline earth metal

D) RADIUM is the most reactive alkaline earth metal

E) TENNESSINE is the most reactive halogen

For E it might also be Astatine because Tennessine is a fairly new

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Margarita [4]

Answer:

Explanation:

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Dustin is mixing concrete. A formula for concrete calls for 3/8 gal of water. Dustin wants to make 7/9 more concrete than the fo

slava [35]

We can use a ratio to solve this question. Lets refer to the amount formed by the formula as a serving
1 serving needs 3/8 gal
We want to create 7/9 servings extra, so
1 + 7/9 = 16/7
1 : 3/8
16/7 : x
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What must occur in order for a chemical reaction to be specifically classified as endothermic instead of

Anettt [7]

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Endothermic

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Heat is retained while exothermic means heat is released

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3 years ago

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Homogenous mixture are?

siniylev [52]

Well in the technical sense, we normally establish these as solutions, but in a practical world it is common to call them solutions. Although this is all true, I refer to this beautiful item of chemistry as the sir mix a lot of chemicals

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4 years ago

Two common methods to generate an aldehyde is by oxidation of an alcohol and through ozonolysis.

kotykmax [81]

Answer:

a. True.

Explanation:

Only primary and secondary alcohols can oxidise to give an aldehyde. But a weak oxidizing agent must be used to prevent formation of a carboxylic acid or ketone.

weak oxidizing agents: Chromyl chloride, silver/oxygen/500°C

take an example of ethanol:

 ${ \bf{CH _{3} CH_{2}OH \: \: \frac{Ag/O_{2} }{500 \degree C} > \: \:CH _{3} CHO}}$ 

 ${ \sf{CH _{3} CHO \: \: is \: ethanal}}$ 

By ozonolysis:

Here, reactants are Ozone gas, Carbon tetrachloride at a temperature (<20°C), ethanoic acid, zinc and water.

take an example of propanol:

if it undergoes ozonolysis, it gives ethanal and methanal.

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