This is a basic Python program to calculate how much solute is needed to make a particular concentration of a chemical for a given solution.

Enter mass of chemical, volume and concentration required. Program will calculate required solute needed.

#Chemical solute calculator
print("Chemical solute calculator")
print(" ")
print("This program will ask you for some basic data and will then calculate how much solute is needed for a given volume and concentration")
print(" ")
print("1 mol solution is formula weight in 1 liter of water")
print("")
print(" ")
print("Mass is the molecular mass of the chemical solution you're making e.,g Copper Sulfate is 249g")
print(" ")
print("Volume the total solution volume in litres,  100ml is written as 0.100")
print(" ")
print("Concentration required in Mols")
print(" ")
mass = input ("Mass in g: ") 
#print("Solute requred")
volume = input("Volume in l: ")
print((volume) + " l")
conc = input ("Required Concentration in M: ") 

solute = float(mass) * float(volume) * float(conc)
print("Solute required: ")
print(str(solute) + " g")
print(" ")
print("Note:  This program is a guide, and you should double check calculations")

There is a better online solution to this here

Program 2

This is a related ruby program to calculate different molar masses

# molar weight calculator
puts "molecular weight calculator"
puts
print "Enter Weight: "
weight = gets
print ("Weight :"); 
print (weight)
puts 
print ("0.5 Mol: ")
print weight.to_f / 2
puts
print ("2 Mol: ")
print weight.to_i * 2
puts 
print ("4 Mol: ")
print weight.to_i * 4
puts
puts 
print ("End")

Enter a molecular weight, and it will calculate ½, 2 and 4 moles accordingly. It is not perfect, just works.

Tags

#Science,#Chemistry,#Calculator,#Mole,#Solution,#Solute

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I want to build something for the science kit to make it easier to stir liquids. I have found a project for a DC motor controlled by a potentiometer. that also uses an Arduino microcontroller. This should be easy enough to build and attach a stirrer to. This can be soldered up, battery attached, power switch may also be needed.

Should then be easier to stir liquids for science experiments.

Tags

#Arduino,#Electronics,#Science,#Chemical,#Stirrer,#DC,#Motor, #Control

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There is website tool for calculating the amount of solute needed for a given volume and concentration. This can be found here

I just put this together in python3

V2.0

#Chemical solute calculator
print("Chemical solute calculator")
print(" ")
print("This program will ask you for some basic data and will then calculate how much solute is needed for a given volume and concentration")
print(" ")
print("1 mol solution is formula weight in 1 liter of water")
print("")
print(" ")
print("Mass is the molecular mass of the chemical solution you're making e.,g Copper Sulfate is 249g")
print(" ")
print("Volume the total solution volume in litres,  100ml is written as 0.100")
print(" ")
print("Concentration required in Mols")
print(" ")
mass = input ("Mass in g: ") 
#print("Solute requred")
volume = input("Volume in l: ")
print((volume) + " l")
conc = input ("Required Concentration in M: ") 

solute = float(mass) * float(volume) * float(conc)
print("Solute required: ")
print(str(solute) + " g")
print(" ")
print("Note:  This program is a guide, and you should double check calculations")

#Chemical solute calculator
print("Chemical solute calculator")
print(" ")
print("This program will ask you for some basic data and then calculate how much solute is needed for a given volume and concentration")
print(" ")
mass = input ("Mass in g: ") 
print("Solute requred")
volume = input("Volume in l: ")
print((volume) + " l")
conc = input ("Required Concentration in M: ") 


solute = float(mass) * float(volume) * float(conc)
print(solute)

Note: This is just meant to work and perform a single function. I have not added error checking, so values are numerical.

Tags

#Calculator,#Solute,#Chemistry,#Solution,#Volume,#Mols

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I found a link to this on Twitter, part of last weeks National Periodic table day. This is a really useful set of periodic tables, each one covers a different topic, e.g Origins, name origins, elements in the Sea, Phones, Toxicity etc.

• Element Data

So an example is:– Periodic table of Isotopes, which gives information on how many isotopes there are for each element.

REFERENCES

• Compound Chemistry

TAGS

#YearOfTheFediverse,#Chemistry,#PeriodicTable,#Elements,#isotopes,#CompoundChem,#Chemical,#Data

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Further to the post earlier I am having mixed results trying to make double bonds from bendy straws. This is really proving to be not the most ideal solution.

I am experimenting with using straight straws side by side to represent a double bond.

This sort of works, but still isn't ideal, perhaps I'll just stick to single bond molecules.

Doing modelling with clay is certainly not an ideal solution but, as stated it may simply help with some basic modelling if you can't get hold of the actual modelling kits.

Just don't try and be adventurous.

This is science, so it needs some more experimentation to find an ideal solution.

if anyone has those craft match sticks such as these:-

as sold by Factory Direct Craft.com

This may prove to be a better solution than straws. You can get shorter lengths which will probably be better.

Don't go and buy any, I would suggest to see if you can get a few to experiment with, after school or other child care clubs usually have craft materials, so I would suggest experimenting first.

#chemistry,#chemical,#modelling,#clay,#straws,#visualisation

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As discussed in my post yesterday. I am going to introduce how to build a few a basic molecules with the resources suggested.

Step 1

Firstly I have cut the Black and White modelling clay to size.

The sections on the RIGHT can be put away for later use. You can see I have more White clay for Hydrogen than Black which I am using for Carbon.

Step 2

Now cut the clay up, roll in to balls and assemble the straws (links) that are needed (in this case 4) It is a good idea to make sure you have all the bits you need to hand.

The Carbon is bigger as we need to attach the 4 Hydrogen to this.

So here, is our Methane model, partly assembled. I have left the last one off for illustration.

The final step is to attach the last Hydrogen to the Carbon creating Methane $CH_4$.

Hope this helps, it may not be perfect but it may help if you can't get hold of actual Molymod kits.

Hopefully what this will allow you to do is visualise basic chemical structures.

There is an addition to this post here

#chemistry,#chemical,#modelling,#clay,#straws,#visualisation

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About a month ago, I started a discussion on the Qoto Discourse forum on molecular modelling.

As I am aware not everyone can afford the Molymod kits [1], I suggested that it should be possible to do something similar, at least on a basic level with plasticine. As I didn't have any at the time, I made a rough model using BluTack.

I have since managed to find some modelling clay from Poundland [3] so I present here, part 1 of 2 on a how_to do this.

Note: is was suggested that I make a video of this, I don't have the equipment for this, so will use photos instead, however hopefully once the South Devon Tech Jam [4] is back, perhaps I can get some help with making a video.

I would rather use photos than make a really bad video, and seek some expertise in creating a video.

So as mentioned in the Discourse thread [2], which you are welcome to join and add to the discussion. What we are looking to do is build simple molecules.

This above shows some basic Alkanes made with a Molymod kit [1].

So firstly the clay I bought from Poundland is below

I have already cut some drinking straws to length

So in this case, the straight pieces are about 1” and the bendy pieces are about 1” either side of the bend.

And as mentioned before these can act as part of a double bond or straight bonds.

As also discussed the Colours will follow normal convention:

This system using the clay isn't going to be perfect, but it is not meant to be. If we can build basic molecules, this is the important thing.

I will provide a follow up post tomorrow.

References

1 Molymod 2 Qoto Discourse 3 Poundland 4 South Devon Tech Jam 5 Molymod Colours

End notes

Hopefully this is useful and if it is, I am still looking for employment in a school, I feel that being able to think of solutions such as this, demonstrates important skills such as problem solving, and writing these blog posts also demonstrates communication skills.

You can find a link to my LinkedIn profile and other contact details on my contact page here.

#chemistry,#chemical,#modelling,#clay,#straws,#visualisation

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It was pointed out to me that “Compounds do not form by combination of atoms, but by formation of chemical bonds between atoms.”

To this end, I am posting the link below to explain the different types of chemical bonds.

• 4-types-of-chemical-bonds

It is also worth noting from the reply that

• “Solder is an alloy from combination of metals such as tin and lead”.

For reference and before I am told that there is Lead (Pb) free solder. The link below gives information on the different types of solder.

• different type of solder

Nevertheless and to get back on to the topic.

I would guess that also from this, an example of a mixture could be:

• Gunpowder which is a mixture of 3 chemicals, well a compound and 2 elements.

#chemistry, #chemical, #bonds, #compounds, #alloy, #mixture,

You can find me on Friendica at zleap@social.isurf.ca

Licenced under Attribution 4.0 International (CC BY 4.0)

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