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3 years ago

A 38.6 kg marble slab is shown above what is its density? give grants to to the nearest tenth

Chemistry

1 answer:

Varvara68 [4.7K]3 years ago

5 0

Answer:

Explanation:

to find the density you need the formula density = mass / volum e

you have the mass but what is the volume

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Sergio039 [100]

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3 years ago

a solution of AICI is combined with a solution of KOH. Identify the precipitate and the spectator ions in the resulting reaction

joja [24]

The the precipitate : Al(OH)₃(s)

The spectator ions : 3Cl⁻ and 3K⁺

<h3>Further explanation</h3>

Reaction

AlCl₃ + 3KOH → Al(OH)₃ + 3KCl

From solubility rules :

Compounds of OH− are insoluble except Compounds of Li +, Na +, K +, Rb +, Cs +, NH₄⁺ , Sr²⁺, and Ba²⁺

Compounds of Cl−, Br−, I− are soluble except Ag⁺, Hg₂²⁺, Pb²⁺

So the the precipitate : Al(OH)₃(s)

net ionic reaction

AlCl₃ + 3KOH → Al(OH)₃ + 3KCl

Al³⁻+3Cl⁻+3K⁺+3OH⁻⇒Al(OH)₃(s)+3K⁺+3Cl⁻

Remove the spectator : 3Cl⁻ and 3K⁺

Al³⁻(aq)+3OH⁻(aq)⇒Al(OH)₃(s)

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3 years ago

12) Write two paragraphs (minimum of five sentences each) about the conflict between saving endangered species and habitats and

loris [4]

Answer:

Endangered species and habitats simply mean that these species and habitats are about to extinct if not take important steps to save them. Many of us support this that we should take steps to save such species to maintain the ecosystem. On the other hand, there are many supporters of economic development even if in this habitat such as water bodies, forests, and other habitats are affected. If a habitat is affected or shrink in the development the species found in these habitats also affected and some might become endangered.

Losing the species and habitats will affect the ecosystem and biodiversity. It leads to disturbing in the health of the environment which affects the health and lifestyle of humans too. To maintain the health of the environment we need to prevent species to extinct and habitats to destroyed. Biodiversity and human should be in harmony and did not destroyed if we will not exploit there will be a better future.

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