CALCIO
SI QUIERES MÁS INFORMACIÓN, EN VÍDEO, INFOGRAFÍA Y TEXTO, HAZ CLIC ABAJO
CALCIUM CHALLENGE
Cassiopeia A is a star that exploded about 320 years ago. No astronomer recorded the explosion at the time, but we can still see the remains of the explosion today in the form of a colorful supernova remnant. By measuring the motion of the gas in the remnant, astronomers deduce its age.
How much calcium is in Cassiopeia A? Use the following information to find out:
• The star that produced the supernova remnant Cassiopeia A was about 20 times more massive than the Sun. It was largely made up of hydrogen but also contained some calcium and other elements.
• When the star exploded, the calcium and other elements produced by fusion during the life of the star fly off into space. The explosion creates more of these and other elements. The total amount of calcium is equal to about 0.05% of the mass of the original star.
• One glass of milk (237 ml) contains approximately 300 mg of calcium.
Using this information,
1) How many kilograms of calcium are in a typical supernova remnant, like Cassiopeia A?
2) How many glasses of milk would this equal?
3) How long must the cows in Spain be milked to produce this number of glasses of milk?
Solar mass = 2×1030 Kg, number of cows in Spain = 6,5 millions, milk produced by a cow per day = 20 L (on average)