A student is heating a chemical in a beaker with a Bunsen burner.

2 answers:

7 0

The student should wear a lab coat that will protect the body from potential spilling of the substance, protective eyewear in case the compound will explode and latex gloves to have some protection against the chemicals which may burn the skin. Besides the respiratory mask, the heating should be carried out in a laboratory hood to prevent the inhalation of the toxic compound which may be released if the chemical will burn. After the heating is complete the beaker should be handled with wooden pliers because is very hot and so avoiding thermal burning.

Explanation:

gogolik [260]3 years ago

3 0

Explanation:

A lab coat protects the student from any spillage of the chemicals on his body. Gloves should protect the student from getting the chemical on his hands as he works. Safety goggles also protect the eyes from any splatter than may be directed towards the eyes.

If the heating produces fumes he must heat the chemical near a window and with the mouth of the beaker facing away from him/her. A safety cabinet should be used if the fumes are considered harmful to inhale.

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Which substance is the oxidizing agent in this reaction? 2CuO+C→2Cu+CO2 Express your answer as a chemical formula.

Alja [10]

The oxidizing agent is the one that is reduced in the reaction. In this reaction, the charge of Cu falls from +2 to zero charge (neutral atom in the right side). Hence, CuO is the oxidizing agent. The reducing agent, the one being oxidized is carbon from zero charge to +4. The answer is CuO.

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Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains high concentrations of nacl a

djverab [1.8K]

solution:

the change in the boiling point is given as,

dTbp =2.30°c

elevation constant for the solvent is given by,

kb=0.512°c/m

$molality=\frac{dTBP}{KB\times m}\\=\frac{2.30}{0.512c/m}$