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3 years ago

What happens when water is added to quicklime? Write two observations.

Chemistry

1 answer:

Neporo4naja [7]3 years ago

3 0

Answer:

1.Most metal oxides are insoluble in water but some of these (e.g. Na2O.

Explanation:

2.: (i) A hissing sound is observed.

1.ii) The mixture starts boiling and lime water is obtained.

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Draw the conjugate bases of pyrrole and cyclopentadiene. For pyrrole, please include the N lone pairs. Conjugate Base of Pyrrole

Korvikt [17]

Answer:

A conjugate acid is a chemical compound formed by the reception of a proton by a base; therefore, it is a base with an added hydrogen ion. On the other hand, a conjugate base is what remains after an acid has donated its proton during a chemical reaction, so it can be said that a conjugate base is a species modified by extracting a proton from an acid.

In pyrrole, the electron pair can be relocated to the ring and its availability is very small. In addition, the concept of aromaticity comes into play.

In the attached file are the schemas of the conjugate bases.

Explanation:

Download docx

4 0

3 years ago

Nylon is a synthetic material that has many uses. It is used in the production of machine parts, cookware, and fabric. Nylon is

ch4aika [34]

In case of a shortage in petroleum and natural gas, a company should find a way to make nylon without using natural resources.

Nylon is a very important material used in numerous applications. As a result of this, the demand for nylon as a raw material has genuinely been on the high side ever since.

However, nylon production depends on petroleum and natural gas. It is possible that there could be a shortage of these resources since they are obtained from the environment. In such cases, a company should find a way to make nylon without using natural resources.

Learn more about polymers: brainly.com/question/17555341

5 0

3 years ago

Read 2 more answers

3.0 cm x 4.0 cm x 1.0 cm [?]cm^3

CaHeK987 [17]

Explanation:

Hi there!!

you asked to multiply these all right,

you can simply multiply it ,

=3cm × 4 cm × 1cm

= 12cm^2×1cm (4×3=12)

= 12cm^3 (12×1=12)

Therefore, theanswer is 12 cm^3.

Hope it helps..

4 0

4 years ago

Group 1A elements (except for hydrogen) are known as the alkali metals. a. True b. False

Tju [1.3M]

The answer is true that Group 1A elements (except for hydrogen) are the alkali metals. Groups 2A are alkaline earth metals. Group 3B-12B are transition metals. Group 3A to 4A except Boron, Carbon, Nitrogen, oxygen, silicon, phosphorus, sulfur, germanium, astatine, selenium, antimony, tellurium, polonium are basic metal. Carbon, nitrogen, oxygen, phosphorus, sulfur and selenium are nonmetals. Boron, silicon, germanium, astatine, antimony, tellurium and polonium are metalloids. Groups 7A are halogens. Groups 8A are noble gases. The lower part of the periodic table are lanthanides and actinides.

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4 years ago

In the following reaction, 451.4g of lead reacts with excess oxygen forming 356.7g of lead (II) oxide. Calculate the percent yie

Sholpan [36]

Given the reaction 2Pb(s)+O2(g)= 2PbO(s) and a reactant amount of 451.4 grams, we are asked for the yield of the reaction. The amount of lead present produces 451.4/207.2 *( 2/2) *(223.2) via 100% conversion, 486.26 grams lead (II) oxide. hence the percent yield is 356.7g /486.26 g or equal to 73.35 percent

8 0

3 years ago