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Dmitrij [34]
3 years ago
5

I need help i dont get it first question

Chemistry
1 answer:
Elena L [17]3 years ago
4 0

Answer:

Refinement

Explanation:

The 3R's policy was fundamentally introduced to safeguard the animals from harsh experiments which could change their mental and physical abilities and lead to their extinction one day.

The principles of 3R's (Replacement , Reduction and Refinement) were developed long time ago. It is an strategy to perform more Humane animal research.

These are defined as,

Replacement is a method to avoid or replace the uses of animals.

Reduction is a method to minimize the number of animals used every experiment.

Refinement is a method of minimizing animal suffering and improving welfare.

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How many grams of Na2SO4 can be produced from 423.67 g of NaCl?
san4es73 [151]

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<h3>Further explanation</h3>

Given

423.67 g of NaCl

Required

mass of  Na2SO4

Solution

Reaction

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4 0
3 years ago
Would it be C..? <br> More NO2 and SO2 would form..help..please and thank you
Scorpion4ik [409]

Answer:

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In given Reaction SO3 is introduced(increased) .

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