maxirico080
04.02.2021 •
Chemistry
HELP ASAP I HAVE 10 MINUTES LEFT- When white light strikes this object, the light is completely absorbed, with none of it transmitted or reflected. Which type of object could this be? (1 point) A. a black piece of paper B. a white sheet of plastic. C. a clear windowpane D. a green long-sleeved shirt
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Ответ:
A. a black piece of paper
Explanation:
The type of object this could be is a black piece of paper.
A black body such a black piece of paper will absorb all wavelengths of radiation that is incident upon it.
A white sheet is a perfect reflector. All incidence radiation is reflected back from its surface 100%.
So, the black piece of paper will absorb all the radiation incident upon it
Ответ:
H2O solvent and HCl solute.
Explanation:
Hello,
In this case, one can identify that neither iodine not carbon tetrachloride will be soluble in water since they are highly nonpolar unlike water. In addition, sodium chloride will not be soluble in carbon tetrachloride as they are ionic and nonpolar respectively, due to the lack of suitable intermolecular forces gathering them. Therefore water as solvent and hydrochloric as solute will form a solution when mixed as both of them are polar, nonetheless, the solubility of hydrochloric acid is about 37 grams of it per 100 g of water which means that no more than 37 grams are going the completely dissolve into maximum 100 g of water.
Best regards.