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emmainna [20.7K]
3 years ago
9

What are some interesting facts about Dmitri Mendeleev?

Chemistry
1 answer:
Amiraneli [1.4K]3 years ago
6 0
Dmitri Mendeleev was born in Tobolsk on the 8th of February 1834.
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Its A

Explanation:

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If 25.5g of sodium thiosulphate was dissolved in 40g of distilled water at 25°C,
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Answer:

Formula: Na2S2O3

we get solubility.

Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g .

Solution given:

mass of sodium thiosulphate [m1]=25.5g

mass of water [m2]=40g

at temperature [t]=25°C

we have

<u>solubility in g/dm^3</u> :\frac{solute in gram}{solvent in gram} *100

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  • =63.75g /litre=63.75g/dm³

<u>solubility in g/dm^3 :63.75g/dm³</u>

<u>n</u><u>o</u><u>w</u>

solubility of the solute in mol/dm^3=:63.75g/dm³/178=0.4 mol/dm³

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3 years ago
Water is boiled in a flask with a balloon over the top of the water gets the balloon expand what has happened to the weight of t
Verdich [7]
It decreases since a air less balloon is heavier than a Aired balloon
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Why is climate change a concern when it comes to animal behavior and ability to reproduce
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Answer:

hope this helps! :)

Explanation:

While humans and many other animals determine sex genetically, many reptiles and some fish use the incubation temperature of the eggs to set the gender of their offspring. This means that changing global temperatures could alter the ratio of sexes produced, making it harder for these animals to find mates

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When harmful bacteria invade a wound, the skin around the wound turns red. This is known as:
nasty-shy [4]

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