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schepotkina [342]
1 year ago
7

Difference between practical work inside and outside laboratory​

Chemistry
1 answer:
arsen [322]1 year ago
5 0

Practical work refers to the art of conducting experiments in order to answer certain research questions.

<h3>What is practical work?</h3>

In science, practical work refers to the art of conducting experiments in order to answer certain research questions. This could occur in a laboratory under controlled conditions or in the field.

In the physical sciences, most of the practical work is conducted in the laboratory under controlled conditions. However, some experiments in the biological sciences and most experiments in the social sciences are conducted outside the laboratory.

Learn more about experiments:brainly.com/question/11256472

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explain how one and two letters chemical symbols are used to identify elements whose names begin with the same letter, for examp
Nadusha1986 [10]

The symbol of helium is He and this distinguishes it from the symbol for hydrogen.

<h3>What are chemical symbols?</h3>

Chemical symbol are the means by which we designate elements on paper. The symbols could be one letter or two letter as the case may be. There is no chemical symbol that has more than two letters that are used to designate the element.

We know that hydrogen has the symbol H. There is to way that another element will also have the symbol H as that would be tantamount to confusion. As a result of that, the symbol of helium is He and this distinguishes it from the symbol for hydrogen.

Learn kore about chemical symbol:brainly.com/question/9249660

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8 0
1 year ago
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total vol
Andrews [41]

Answer:

0.978 M

Explanation:

Given data

  • Mass of luminol (solute): 13.0 g
  • Volume of the solution = volume of water: 75.0 mL = 0.0750 L

We can find the molarity of the stock solution of luminol using the following expression.

M = mass of solute / molar mass of solute × liters of solution

M = 13.0 g / 177.16 g/mol × 0.0750 L

M = 0.978 M

3 0
3 years ago
3. How many formula units of NaOH are in 0.87 moles?
Lady_Fox [76]

Answer: 1 mole of H2O= about 1/3 of a cup (18 mL). It is helpful ... 6.02 x 1023 H2O molecules. = 6.02 x 1023 NaCl formula unit. 1 mole C. 1 mole H2O. 1 mole

Explanation:

5 0
2 years ago
I need help ASAP!!! What type of chemical bond holds Lit and F together in LiF?
Bond [772]

Answer:

The correct answer is a) lonic Bond

Explanation:

Lithium fluoride (LiF) is a salt, formed by an ionic bond between a metal (Li) compound and a nonmetal (F).

4 0
3 years ago
What mass of NH4NO3 would you need to make 250.0mL of a 0.78M solution?
katrin [286]

Answer:

a

Explanation:

8 0
3 years ago
Read 2 more answers
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