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swat32
3 years ago
9

The precautions that must be taken when carrying out experiments with hydrogen​

Chemistry
1 answer:
vodka [1.7K]3 years ago
3 0

Answer:

Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.

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The answer would be 5.5g because you have to subtract 8.2 minus 2.7 and you get 5.5g so basically the answer is C.
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3 years ago
Which of these are physical changes in matter chech all that apply
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Answer:

a pencil being sharpened

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boiling water

Explanation:

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6 0
3 years ago
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One atom of silicon can properly be combined in a compound with
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Which organisms in this food web are carnivores? Select the two correct
LUCKY_DIMON [66]

The two correct options are Poison dart frog and Boa constrictor. Both these organisms are pure carnivores which are also known as pure meat eaters in the food web. Carnivores are organisms in the food chain that only meat-eaters and never take any type of vegetation in their diet.

Explanation:

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6 0
4 years ago
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  1. 11, ions
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hope this helps

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4 years ago
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