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Alex_Xolod [135]
3 years ago
11

how do you overcome or reduce the problem of random error and systematic error while doing experiment

Chemistry
1 answer:
Ulleksa [173]3 years ago
8 0
<span> The best way to overcome or reduce the problem of random error and systematic error while doing experiment is to "increase the sample size" </span>
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1. Which form of sanitation do health experts prefer, washing hands with soap and water or
geniusboy [140]

Answer:

Washing hands with soap and water. Sanitizers are only used if there is no soap and water.

5 0
3 years ago
What steps would you take in a lab to prepare 1000 mL of a 2 M NaCl solution
amm1812

Answer:

The answer to your question is below

Explanation:

Data

Volume = 1000 ml

Concentration = 2M

molecule = NaCl

Process

1.- Calculate the number of moles of NaCl

Molarity = moles/Volume

-Solve for volume

moles = Molarity x Volume (liters)

-Substitution

moles = 2 x 1

-Result

moles = 2

2.- Determine the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

3.- Calculate the mass of NaCl to prepare the solution

               58.5 g -----------------  1mol

                   x      -----------------  2 moles

                       x = (2 x 58.5) / 1

                       x = 117g

4.- Weight 117 g of NaCl, place them in a volumetric flask (1 l), and add enough water to prepare the solution.

7 0
4 years ago
sulfur combines with hydrogen to form hydrogen sulfide H2 S by single covalent bond, while it form with potassium by ionic bond​
Alex

Answer: Ions may be defined as the element that contains either positive or negative charge over them. Two types of ions are cations and anions. The outermost electrons are involved in the formation of ions.

The atomic number of sulfur is 16. Its outermost electronic configuration is K=2, L= 8, M= 6. The sulfur requres two more electrons to complete its orbit and accquire -2 charge.

Explanation:

8 0
3 years ago
Read 2 more answers
The atom of element has 25 electrons and 30 neutrons write down its atomic number and mass number.​
den301095 [7]

Answer:

Atomic number = 25 protons

Mass number = ( 25 + 30 ) = 55

8 0
4 years ago
Read 2 more answers
KOH+H 3 PO 4 K3PO4+ H₂O<br> How to solve and answer to this question
sergij07 [2.7K]

Answer:

hmmmm

Explanation: Balance the reaction of KOH + H3PO4 = K3PO4 + H2O using this chemical equation balancer!

4 0
3 years ago
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