2 years ago

Apply to stop the flow of blood from a cut. bandages pressure cotton ointment

Chemistry

1 answer:

aivan3 [116]2 years ago

6 0

If it is a big open wound you apply pressure

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While conducting a lab experiment, Ali calculated that 1.20 E6 Joules of heat were needed to melt 18.5 kilograms of an unknown s

nordsb [41]

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Latent heat of fusion of the substance is $6.49\times 10^{4}J/kg$

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Latent heat of fusion denotes amount of energy (heat) per unit mass required to melt a solid material at constant temperature and pressure i.e. at it's melting point

Here amount of heat required = $1.20\times 10^{6}J$

Mass of unknown substance being melted = 18.5 kg

So, latent heat of fusion of the substance = (required heat energy to melt)/(mass of the unknown substance) = $\frac{1.20\times 10^{6}}{18.5}J/kg=6.49\times 10^{4}J/kg$