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Marizza181 [45]
3 years ago
14

Why must a container or system be closed for equilibrium to be established?

Chemistry
1 answer:
il63 [147K]3 years ago
4 0

If you're dealing with gases, some of them could escape the container. Or, if you're dealing with liquids, there could be some outside factors playing in. In general, you need a closed system to observe a reaction accurately.

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Can a tiny organism found in a cave help fight human disease? Explain?
frosja888 [35]

Answer:

actually yes some tiny organisms can help fight off diseases and possibly are slightly better than meds

Explanation:

i actually read an article about it not to long ago and found out that new mexico found something very similar

hope this helps :) also if you can pls mark me as brainliest

8 0
3 years ago
How many significant figures are in 7.1 x 10-6
Iteru [2.4K]

7.1x10=71

71-6=65

2cifrass

3 0
4 years ago
Determine the density of nh3 gas at 435k and 1.00atm
goldenfox [79]
We assume that this gas is ideal. Therefore, we can use the ideal gas equation which is expressed as:

PV=nRT 

We manipulate this equation to give us an expression which will correspond to density. We do as follows:

PV= nRT
P/RT = n/V where n = m/MM
P(MM) /RT = m/V = density
Density = 1.00 (17.03) / 0.08206 (435)
Density = 0.48 g / L

5 0
4 years ago
Methyl red is a common azo dye. Which starting materials are used to prepare it?
Licemer1 [7]

Answer:

1. Diazonium salt

2. Coupling component

Explanation:

Azo dyes re synthesized by the combination of two organic compounds viz

1. Diazonium salt

2. Coupling component

1) For methyl red, the diazonium salt which is an intermediate product is produced by  the reaction of hydrochloric acid (HCL) with anthranilic acid and sodium nitrate (NaNO₂)

2) The produced diazonium salt is then combined with dimethylaniline which is a coupling component rich in electrons to undergo a chemical reaction  that by an aromatic substitution mechanism to produce methyl red as the final product.

8 0
3 years ago
A radioactive nuclide that is used for geological dating has an atomic number of 19 and mass number 40. Which is the symbol of t
Alina [70]
The mass number goes on top, and the atomic number goes on bottom. 
Therefore, the answer is C:
40
     K
19

7 0
4 years ago
Read 2 more answers
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