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irina [24]
3 years ago
6

What are the five lessons or skills you learned in your tle 9

SAT
1 answer:
Ad libitum [116K]3 years ago
4 0

Answer:

Explanation:

The Philippine economy is driven primarily by the service and industry sectors.

Two-thirds of the population is still living in the rural area where agriculture is the main source of livelihood.

Forty-eight percent of the total land area for agriculture are planted to temporary crops while 46% are planted to permanent crops.

The major crops in the Philippines are rice, corn, coconut, sugarcane, banana, pineapple, coffee, mango, tobacco, abaca, peanut, mungbean, cassava, sweet potato, tomato, garlic, onion bulb, cabbage, eggplant, calamansi, and rubber.

Major livestock are carabao, hog, cattle, goat, dairy and the major fisheries are milkfish, tilapia, tiger prawn, yellowfin tuna. Poultry products in the country are chicken, duck, chicken eggs, and duck eggs.

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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

3 0
2 years ago
Read the following scene from the inheritors. Fred jordan's cell. Slowly, at the end left unchalked, as for a door, she goes in.
Nadya [2.5K]

One of the disadvantages of watching the scene rather than reading it is the difficulty in interpreting the movements in the absence of stage directions.

<h3>What are stage directions?</h3>
  • They are instructions.
  • Show how actors must express their characters through movements and behaviors.
  • They show how the scenario should be set.

The stage directions shown in the text above show how actors should move through stage directions. This is shown in detail and specifies that it can be missed if the scene is watched and not read.

More information on stage directions is at the link:

brainly.com/question/404162

7 0
2 years ago
philly and boston were working on a project in carpentry class. they needed to cut 5 lengths of 234 feet from a board. how long
ss7ja [257]

or 5 lengths of 234 feet to be cut from a board, the board must have a length of at least 1170 feet.

Let x represent the total length of the board so as to allow for the cutting of 5 lengths.

Since each length needed to be cut is 234 feet, hence:

x = number of lengths × feet per board

x = 5 lengths × 234 feet

x = 1170 feet

Hence for 5 lengths of 234 feet to be cut from a board, the board must have a length of at least 1170 feet.

Find out more at: brainly.com/question/18832017

6 0
3 years ago
What best explains the label that the student should use on the y-axis? reaction rate, as the rate of forward and backward react
Nata [24]

Answer:

5+5=10

Explanation:

Now to get that answer you need two hands make sure they both have five fingers now put your hands toughter now then count the fingers and if you count them there should be 10 unless you ate one yesterday like I did.

8 0
2 years ago
Cơ hội làm việc của sinh viên tại doanh nghiệp thuộc ngành quản trị kinh doanh
butalik [34]

Answer:

in English plz

Explanation:

I don't understand the question.

6 0
3 years ago
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