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Pie
2 years ago
6

Which of the below mentioned operating system is not a proprietary os.

SAT
1 answer:
Gwar [14]2 years ago
5 0

The operating systems that is not proprietary among the softwares is Linus

Proprietary software can be regarded as non-free software whereby the software's publisher decided to reserves some rights from licenses  so others cannot modify or use it.

Examples of Proprietary software are;

  • MS-DOS
  • Windows 2000

Therefore,the operating systems that is not proprietary is Linus.

Learn more about proprietary software at;

brainly.com/question/1538272

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2/3 miles

------------

1/3 hour


copy dot flip

2/3 * 3/1  

2 miles per hour  is the unit rate


Answer: 2 miles per hour

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A 20.0-ml sample of a 0.200 mhbr solution is titrated with a 0.200 mnaoh solution. calculate the ph of the solution after the fo
kumpel [21]

The calculated pH of the solutions are given below:

  • The pH of the solution after 14.0 ml of base is added to it is calculated as 1.45.
  • The pH of the solution after 19.8 ml of base is added to it is calculated as 3.0
  • The pH of the solution after 20.0 ml of base is added to it is calculated as 7.

<h3>What is pH?</h3>

This is the level of acidity or alkalinity of an aqueous solution. The pH of a substances tells if its an acid, base or neutral.

HBr and NaOH while in water would dissociate and they would become H+ and OH- respectively.

Mol of HBr = Mol * Vol

= 0.200 * 20mL

= 4 mmol

A. Moles of NaOH added

= 0.2 X 14

= 2.8 mmol

Moles of H+ that did not react

= 4 - 2.8

= 1.2 mmol

1.2/1000 = 0.0012 moles

Total volume = 20 + 14

= 34 mL to litres

= 0.034 L

Molarity of H+ = 0.0012 / 0.034L

= 0.035 M

-log[0.035] = 1.45

The pH of the solution is  1.45

B. NaOH added = 19.8 * 0.2 =

3.96 mmoles

The unreacted solution

= 4.0 - 3.96

= 0.04 mmol

0.04/1000 = 0.00004 moles

Total volume = 20 + 19.8

= 39.8mL

Converted to litres = 0.0398L

Molarity  = 0.00004 / 0.0398L

= 0.001

-log(0.001) = 3.0

The ph Is therefore 3.0

C. Moles of NaOH added = 0.2*20mL = 4mmol

All the H+ are going to be consumed here. This would result into a neutral solution pH = 7

<u>Complete question:</u>

20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the PH of the solution after the following volumes of base have been added.

A. 14.0 mL

B. 19.8 mL

C. 20.0 mL

Read more on pH here; brainly.com/question/22390063

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2 years ago
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Fill in the blank with the Spanish word that best completes the following sentence. El ____________ repara los carros. mecánico
jeyben [28]

In this case, the sentence is 'El mecánico repara los carros'. The word 'mecánico' makes reference to a male who works repairing cars.

The word 'escritor' makes reference to a male writer, i.e., a male who writes books, articles, stories, etc.

The word 'cirujano' makes reference to a medical male doctor who uses his hands to perform surgeries.

The word 'criado' makes reference to a senior male servant who works in a large household serving.

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