Answer:
answer of first question is <u>Chlorine</u>
answer of second question is <u>Group </u><u>1</u><u>4</u>
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<u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u></h3>
Since there is no "new" chemicals made during this process, it is considered a physical change. Distillation is a process of separating dissolved solids or liquids with different boiling points without chemically changing anything.
Color change, formation if a new substance or altering molecular structure are all general signs of chemical change.
Therefore, the last answer choice looks like the best answer.
Hope that helps!
The Thiele tube which is look like a triangle, used for the determination of melting and boiling point of the solid and liquid sample respectively. The tube consists of high viscous oil. The mouth of the triangle tube consists the thermometer and the sample through a rubber stopper. The tube is always heated in low flame as the heating mechanism of the oil is through convection current process, in which the molecules of the oil heated passes through out the bulk to make a uniform heat of the liquid. The uniform heat of the liquid is necessary to determine the exact melting point of the solid. Also the low heating rate is compulsory so that the rate of convection current be slow. The high heating rate may cause fast convection in the oil and the hot oil can spill out from the tube and may cause an accident.
<span> .789=12.8*x
.789/12.8=x
.0616=x
.0616ml </span>
Answer:
oxalate, fluoride, carbonate, phosphate.
Explanation:
It is important to consult the solubility chart in order to determine the anions.
Any compound with a low Ksp means the compound is very insoluble.
Hence, it means the formation of this compound is favoured strongly and its dissolution which would liberate calcium ions is unfavoured.
Any compound with a low Ksp would therefore "soak up" all the free calcium and will thus not be present in the solution.
Using solubility chart and noting the compounds with a low Ksp value, the anions that are probably present are: oxalate, fluoride, carbonate, phosphate.