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4 years ago

Answer fast and I’ll give BRAINLIEST please and thank you!! IT WOULD HELP ALOT IF U DONT RUSH AND ANSWER CORRECTLY

Chemistry

1 answer:

andrezito [222]4 years ago

3 0

Answer:

i am thinking that they will be extinct

Explanation:

if their habitat is dying then they are dying and it would be sad

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A chemist can determine the mass of K in a sample of known mass that consists of either pure K2O or pure K2O2. From this informa

Arte-miy333 [17]

Yes , the chemist can answer if the compound in K2O or K2O2

The chemical formula and composition of both the compounds is entirely different. The compound K2O2 has an additional molecule of oxygen than K2O and hence will have have higher molecular mass.

In the compound K2O

molecular mass= 2x 39+16 =94

mass ratio of K in compound= 78/94 = 0.830

In the compound K2O2

molecular mass= 2x 39+16X2 =110

mass ratio of K in compound= 78/110 = 0.710

and hence by the required ratio while extracting K , the chemist may know if the compound is K20 or K2O2

If the ratio is anything different from 0.830 and 0.710 then the compund will be something different

#SPJ9

5 0

2 years ago

(10 points) Please help asap!!

icang [17]

Answer:

1-3 2-2 3-1

Explanation:

7 0

4 years ago

I am the alkali metal that would be most likely to melt on a very hot day.

zalisa [80]

Rubidium is the alkali metal that would melt on a hot day.

5 0

3 years ago

Solve 123,000 m x 3,234 m = ?

Leya [2.2K]

Answer:

397782000 m²

Explanation:

Given data:

123000 m × 3234 m =?

Solution:

123000 m × 3234 m = 397782000 m²

when we multiply the given quantities having same unit i.e meter the answer should be m² . It could be the area, and its unit is m².

Area = length (m) × width (m)

3 0

3 years ago

Select the correct answer.

Sladkaya [172]

Answer:

Option D. There will be a shift toward the reactants.

Explanation:

The reaction is:

$PCl_5(g)+heat\rightleftharpoons PCl_3(g)+Cl_2(g)$

The application of LeChatelier's principle leads to consider the heat as a reactant or a product depending on if it is on the left side or the right side.

In this reaction, the heat is on the left side, thus it must be considered a reactant.

Decreasing the temperature is equivalent to remove or consume heat. Thus, the reaction must shif to the left to compensate that reduction of heat. That is the reverse reaction shall be favored.

In conclusion, there will be a shift toward the reactants.

5 0

3 years ago