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emmasim [6.3K]
3 years ago
9

1. Describe the difference between an electron and a proton in terms of their charge.​

Chemistry
1 answer:
Zarrin [17]3 years ago
5 0

Explanation:

Protons have a positive charge. Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.

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solmaris [256]
Soild , liquid, gas
5 0
3 years ago
How many grams of NaC2H3O2 are needed to prepare 350. mL of a 2.75 M solution? (molar mass of
shepuryov [24]

Answer:

78.96 g of NaC2H3O2

Explanation:

We are given;

  • Volume of the solution as 350 mL
  • Molarity of the solution as 2.75 M
  • Molar mass of the solute NaC2H3O2 as 82.04 g/mol

We are required to determine the mass of the solute;

First we determine the number of moles;

Moles = Molarity × Volume

Therefore;

Moles of the solute = 2.75 M × 0.350 L

                                = 0.9625 moles

Second, we determine the mass

Mass = Moles × Molar mass

        = 0.9625 moles × 82.04 g/mol

        = 78.9635 g

        = 78.96 g

Therefore, the mass of NaC2H3O2 needed is 78.96 g

4 0
3 years ago
Take your time please.​
Andreyy89

Answer:

1.) Eyewash station --> D

2.) Absorbent material --> G

3.) Fire extinguisher --> F

4.) Safety Shower --> E

5.) Biohazard container --> J

6.) Broken glass container --> I

7.) Safety goggles --> C

8.) Lab apron --> H

9.) asbestos gloves --> A

10.) Latex gloves --> B

Explanation:

In an equipped laboratory, alot of safety equipments are made available and kept in area that it could be easily accessed in the laboratory. Safety or protective equipments are those materials that helps protect a laboratory personnel while at work on the lab.

These equipments include:

--> Eyewash station: This is an equipment used in the laboratory during emergency to rinse chemical from the eye. Therefore option D is correct.

--> Absorbent material: They are used to contain small spills in the laboratory. Therefore option G is correct.

--> Fire extinguisher: This equipment is used to put out small fires. Therefore F is correct.

--> Safety Shower: This is used to rinse away chemical from clothes and on skin during emergency. Therefore option E is correct.

--> Biohazard container: This container is used to safely dispose bacteria culture, blood and other living tissues. Therefore option J is correct.

--> Broken glass container: This is used to dispose cracked, chipped or broken bottle in the laboratory. Therefore option I is correct.

--> Safety goggles: This helps to protect the eye from chemical and broken glasses. Therefore option C is correct.

--> Lab apron: This is worn by the laboratory personnel to help protect the skin from chemical and biohazards. Therefore option H is correct.

--> Asbestos gloves: these are heat resistant gloves used to protect the hands from heat. Therefore option A is correct.

--> Latex gloves: these are equally worn by the laboratory personnel to protect the hands from chemicals and biohazards

6 0
3 years ago
Read 2 more answers
The periodic trend for electronegativity is similar to what other trend?
Lesechka [4]
D. The trend for first ionization energy
6 0
3 years ago
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Which will provide the most direct measure of pH by measuring the hydrogen ion concentration of a solution?
pogonyaev
PH meter is dircet so the answer is C

5 0
3 years ago
Read 2 more answers
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