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Neporo4naja [7]
3 years ago
11

Describe how you could show that an alkaline solution is formed when caesium reacts with water

Chemistry
1 answer:
igor_vitrenko [27]3 years ago
3 0
After reacting, place a red moist litmus paper into the final solution and the litmus paper will turn blue. This indicates that the solution is alkaline.
Alternative methods
Using universal indicator
using phenophtalein
using bromothyl blue
using methyl orange
use pH probe connected to a data logger
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B is your answer to this
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If oxygen has a molar mass of 16.0 g/mole, carbon has a molar mass of 12.0 g/mole and hydrogen has a molar mass of 1.01 g/mole,
Stolb23 [73]
The number of mole of ethanol present in the beaker is 0.217 mole

Description of mole
The mole of a substance is related to it's mass and molar mass according to the following equation:
Mole = mass / molar mass

How to determine the mole of C₂H₅OH
From the question given above, the following data were obtained:
Mass of C₂H₅OH = 10 g
Molar mass of C₂H₅OH = (12×2) + (1.01×5) + 16 + 1.01 = 46.06 g/mol
Mole of C₂H₅OH =?

Mole = mass / molar mass
Mole of C₂H₅OH = 10 / 46.06
Mole of C₂H₅OH = 0.217 mole


Learn more about mole:
brainly.com/question/13314627

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5 0
2 years ago
What is the pressure of 4 moles of helium in a 50 L tank at 308k using PV=nRT
Ilya [14]

Hey there!:

p = ??

n = 4 moles

V = 50 L

T = 308 K

R =  0.082 atm

p*V = n * R * T

p * 50 = 4 * 0.082 * 308

p*50 = 101.024

p = 101.024 / 50

p = 2.020 atm


Hope that helps!


8 0
2 years ago
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The amount of thermal energy stored in an object depends on what
Snowcat [4.5K]

Answer:

The amount of thermal energy stored in an object depends on three things.

  1. The mass of the object.
  2. The temperature of the object.
  3. The amount of energy that the particular material stores per degree of temperature.
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What noble gas configuration does oxygen achieve when bonded?
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Answer:

1s2 2s2 2p6

Explanation:

ththe noble gas config. of neon

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