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1372.3503 g

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What is the number of measured quantity 351g?

The number of the measured quantity is 351 grams.


How much ice would have to melt to lower the temperature of 352 ml of water?

Since you want your answer in grams of ice we need to convert 351 ml of water to grams. This is very easy for water since 1 ml of water weighs one gram. So we have 351 grams of water. We need to figure out how much energy we need to remove from the water. If you remove one calorie from one gram of water you will lower the temperature one degree C. So water has a specific heat (c) of 1 cal/g/C You have 351 grams and you want to drop the temp 20 degrees. You must remove q = mass x specific heat x temp change q = 351 grams x 1 cal/g/C x 20 degrees= 7020 calories now we need to figure out how much ice this will take. Melting one gram of ice requires 79.7 calories dividing we get ice required = 7020 calories/79.7 calories/grams = 88.1 grams of ice


Can you tell me if boiling point of alcohol is 78 degree Celsius then what is this temperature in kelvin scale?

Kelvin is the SI unit for temperature. Celsius is usually used in metric systems. 0 degree celsius is 273.15 Kelvin. Kelvin increases equally with celsius. So to convert celsius to kelvin, we just add 273.15 to celsius. The answer in Kelvin is 351.15


How do the masses of protons and neutrons compare?

The mass of a proton is about 1.672621777 x 10-27 kg. The mass of a neutron is about 1.674927351 x 10-27 kg. The equivalent energy of a proton is 938.272046 MeV/c2. The equivalent energy of a neutron is 939.565378 MeV/c2. The difference is 1.293332 MeV/c2, which is the amount of energy released when a down quark is converted into an up quark, changing the neutron into a proton during beta- decay, releasing an electron (0.510998928 MeV/c2) and an electron antineutrino (< 2.2 eV) plus energy of about 0.782333 MeV/c2.