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AURORKA [14]
3 years ago
7

How is science used by a firefighter

Chemistry
1 answer:
Rufina [12.5K]3 years ago
4 0
Science is applied in all parts of our lives. Firefighters use science by knowing what causes fire and what circumstances are necessary for a fire to occur naturally. for example knowing the chemical composition of hay required in order for it to self ignite on fire helps to take measurements and prevent unwanted fires.
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Moles of Zn(NO3)2 in 131.50g of this substance.
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<span>number of moles= mass / molecular mass
mass=131.50g
molecular mass of Zn(NO3)2 =189.39 g/mol
number of moles = 131.50 g/189.39 g/mol =0.69433 mol</span>
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3 years ago
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