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zvonat [6]
3 years ago
5

Helppppppppp pweaseeeee

Chemistry
1 answer:
algol [13]3 years ago
5 0

Answer:

Explanation:

b

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Consider the reaction shown.
Allushta [10]

Answer:

4.43 g Cl₂

Explanation:

To find the mass of Cl₂, you need to (1) convert moles HCl to moles Cl₂ (via the mole-to-mole ratio from equation coefficients) and then (2) convert moles Cl₂ to grams (via the molar mass). It is important to arrange the conversions/ratios in a way that allows for the cancellation of units. The final answer should have 3 significant figures like the given value.

4 HCl(g) + O₂(g) -----> 2 Cl₂(g) + 2 H₂O(g)
^                                   ^

Molar Mass (Cl₂): 2(35.453 g/mol)

Molar Mass (Cl₂): 70.906 g/mol

0.125 moles HCl          2 moles Cl₂             70.906 g
--------------------------  x  ----------------------  x  -------------------  =  4.43 g Cl₂
                                     4 moles HCl              1 mole

6 0
2 years ago
A TLC plate showed 2 spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solv
Katena32 [7]

Answer:

See explanation

Explanation:

TLC is a chromatographic method in which the solute is spotted on a plate and the plate is placed in an air tight chamber containing a solvent. The solvent is maintained below the level of the spot. The capillary movement of the solvent through the plate achieves the required separation.

If two spots have Rf values of 0.25 and 0.26 respectively and then the plate was removed from the developing chamber, subsequently, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber.

It will be observed after the second development is complete that the new Rf values will be 0.50 and 0.52 respectively. It will just be as though the second chromatogram picked up from where the first chromatogram stopped.

4 0
3 years ago
What makes a question testable? Can someone help me on this pls it has to be either a 4-5 sentence! this is a science question.
Alexxandr [17]

Answer:

testable questions are answer through observation or an experiment that provides evidence that the questions connects to the scientific concepts rather the opinion feelings

therefore the question can be tested through observation or experiment

7 0
3 years ago
According to Le Chatelier’s principle, what always happens to the equilibrium of a reaction when the temperature is reduced?
Tasya [4]
It always shift to the direction where balance out the reaction
here 
<span>It shifts in the exothermic direction.</span>
5 0
3 years ago
Read 2 more answers
The ___ blends into outer space.
Paraphin [41]

Answer:

Exosphere

Explanation:

it is found at the end reaching outer space

3 0
3 years ago
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