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enot [183]
3 years ago
7

The proper technique used to obtain a liquid sample using a pipette involves: Group of answer choices your mouth on one end of t

he pipette to suction the sample. a suction bulb or pipette pump to suction the sample. a funnel on one end of the pipette to add the sample. a small glassware to pour the liquid in one end of the pipette. the vacuum hose on one end of the pipette to suction the sample.
Chemistry
1 answer:
Ksivusya [100]3 years ago
5 0

Answer:

A suction bulb or pipette pump to suction the sample.

Explanation:

There are different types of pipettes that can be used in a laboratory:

  • Volumetric pipette-used to transfer a specific calculated amount of liquid
  • Graduated pipettes-used to transfer different calculated amounts of liquid from one container to another.
  • Micropipettes-used to transfer small amounts of liquids
  • Pasteur pipettes- just like micropipettes, pasteur pipettes are used to transfer small amounts of liquids, but manually. They are also called droppers.

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4 years ago
What is the mass in grams of 3.05x10^25 gold atoms
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3 years ago
How many grams of sodium chloride could be produced from 41.3 L of chlorine gas?
babymother [125]

Answer:

The grams of sodium chloride that will be made is 292.5 g. calculation. 2Na + Cl₂ → 2NaCl. step 1: calculate the moles of Na. moles = mass/molar mass. From periodic table the molar mass of Na = 23 g/mol. moles = 115 g/23 g / mol = 5 moles. Step 2 : use the mole ratio to determine the moles of NaCl. Na:NaCl is 2:2 = 1:1 therefore the moles of NaCl is also = 5 moles.

Explanation:

We know sodium is a very active metal and chlorine is also a very reactive non-metal. Usually, metals like to eliminate electrons and non-metals such as halogens like to accept electrons. Sodium readily eliminate its last shell electrons become Na+ cation and chlorine accepts that electron to form Cl-anion.

6 0
3 years ago
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Answer:

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