EjerciciosFyQ
Ejercicios Resueltos, Situaciones de aprendizaje y VÍDEOS de Física y Química para Secundaria y Bachillerato
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EjerciciosFyQ
Make a solution by mixing 22 g of sugar and 240 mL of milk. Determine the percentage by mass of this solution. How much sugar is needed to prepare 500 g of solution with the same concentration?
Average density of milk is 
.
a) The normal body temperature is 
. Express this value in K.
b) If an object has a temperature of 354 K, what is its temperature in Celsius?
What type of energy is involved in each of the following situations?
a) Wood is burning in the fire.
b) A radio station is broadcasting its usual program. Waves are coming out of its antenna.
c) A mobile phone is playing music.
Define, with your own words, what energy is. Explain three different types of energy.
Calculate the final volume of a gas at 
and 1.1 atm, when its volume is 3 L and the temperature and pressure are increased to 
and 1.3 atm.