Posts Tagged ‘lethal’

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Valentine’s Day Warning: Chocolate can kill. But how much?

February 8, 2026

With Valentine’s Day approaching Mathspig has reposted this warning.

Chocolate contains a chemical called Theobromine. This alkaloid ( other alkaloids include cocaine, nicotine, caffeine, and strychnine) can kill humans. More info Wired Magazine.

How much chocolate is too much?

Firstly, the darker the chocolate the more Theobromine it contains.

According to About Chemistry based on the highest possible toxicity:

* VetmedicineCooking chocolate contains 8-10 times the Theobromine in Milk Chocolate.

According to Wired large doses of theobromine may cause “nausea and anorexia ….. sweating, trembling and severe headache.”

The Royal Society of Chemistry notes that chocolate does not contain caffeine, but theobromine induces similar symptoms.

LD50 for the lethal dose for 50% of the population for Theobromine is:

1000 mg/kg 0r 1gm/kg of body weight in humans

Death by Chocolate Calculations:

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Death by Chocolate for DOGS

February 8, 2026

choc wrap 1Chocolate can be fatal to dogs. As dogs are small they can easily eat enough chocolate to kill them. According to The Royal Society of Chemistry

Mathspig Death by Chocolate for DOGS

The National Geographic has an amazing interactive chart for dog poisoning by chocolate.

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Death by Chocolate for DOGS

February 22, 2021

choc wrap 1Chocolate can be fatal to dogs. As dogs are small they can easily eat enough chocolate to kill them. According to The Royal Society of Chemistry

Mathspig Death by Chocolate for DOGS

The National Geographic has an amazing interactive chart for dog poisoning by chocolate.

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8c. What Volume of Alcohol is Lethal?

August 14, 2017

The Complaint

8c: I Will Never Use this Maths

The Solution:

You are going to use this maths NOW……………..

……………………………………………………………………..

How much alcohol will kill you?

TOPICS: Decimals, %, algebra, vol, weight units (Metric)

At low levels of consumption alcohol impairs decision making and inhibits coordination. It makes you DUMB and CLUMSY, which can cause serious injuries if you, say, fall down stairs.

Legal Age to Buy or Sell Alcohol USA: 21 years

Legal Age to Buy or sell Alcohol AUST, NZ & UK: 18 Years

Legal Age to Buy or sell Alcohol CANADA: 18 – 19 Years depending on region.

At higher levels of consumption ALCOHOL can kill. It is a depressant. It acts on your central nervous system. It can STOP YOU BREATHING.

WORKSHEET PDF:  How Much Alcohol Would Kill You? WORKSHEET

WORKED EXAMPLE

1. Calculate the weight of (pure) alcohol or ethanol in the following standard drinks using the following information:

Now Ethanol =  0.79 gm/ml

More information @ alcohol.org.nz

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Maths Mystery Box 10: LETHAL

February 13, 2015

Maths Mystery Box 10

Middle School Maths Challenge

Symmetry, geometry plus guts and determination.

Make a paper plane that can fly as high as a 5-story building and test it.

You need:

– Half A4 sheet

– Scissors

– A rubber band

The physics of paper is complex. Folder paper is very strong. Here students create a world record folding a piece of paper 13 times.

Crumpled paper is also very strong. Crumple a piece and try and flatten it. More here.

10 Lethal Paper Plane  1

From Instructables blog

10 Lethal Paper plane 2

10 Lethal Paper Plane 3

image 4Test it but be careful you could take out an eye.

Thanks INSTRUCTABLES.

Now for the BIG challenge:

The above paper plane has 5 wing folds. Can you make a bigger paper plane with more folds. For instance, you could try an A4 sheet.

More from Instructables here: