Which would aid a student in preparedness for a lab

Chemistry

2 answers:

morpeh [17]3 years ago

5 0

Telling the teacher about a chemical spill immediately

nevsk [136]3 years ago

5 0

Answer:

reading the lab manual before class

Explanation:

The laboratory is a highly regulated and controlled environment. Within a laboratory many rules must be followed so that no contamination occurs or deterioration of the experiments being performed in the laboratory. All of this can be intimidating for a first-time student entering the lab, so it is recommended that the student prepare before leaving so that no accidents can occur.

The best way for a student to prepare before going to a lab is to read the lab manual before class. This way, the student knows everything they can do and cannot do inside a laboratory and all the guidelines needed for this environment.

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Dehydration of tertiary alcohols occurs by what mechanism?

Kitty [74]

Answer:

An EL mechanism

Explanation:

I looked this up, it's called an EL mechanism

8 0

3 years ago

Milk of magnesia is often taken to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 te

Igoryamba

Answer:

8.61 mL of the HCl solution

Explanation:

The reaction that takes place is:

2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O

From the given mass of Mg(OH)₂, we can calculate <u>the moles of HCl that are neutralized</u>:

4x10² mg = 400 mg = 0.400g

0.400g Mg(OH)₂ ÷ 58.32g/1mol = 6.859*10⁻³ mol Mg(OH)₂

6.859*10⁻³ mol Mg(OH)₂ * $\frac{1molHCl}{1molMg(OH)_{2}} =$ 3.429x10⁻³ mol HCl

Finally, to calculate the volume of an HCl solution, we need both the moles and the concentration. We can <u>calculate the concentration using the pH value</u>: