1. Se tiene 360 mL de solución de sulfato de plata con densidad 1,75 g/mL y al 7%, se añaden 250 mL de otra solución de sulfato de plata con una densidad de 1,30 g/mL al 4,5%. ¿Cuál es la
concentración M de la nueva solución?

2. Una solución de carbonato férrico al 2,5% en densidad 7,25 g/mL en 750 mL. Calcular las
concentraciones M y N

3. Calcular la densidad de una disolución que se ha preparado con 70 g de propílico en 350 mL
de agua, con una concentración del 25%.

4. En qué volumen estarán disueltos 0,75 g de carbonato de aluminio que tiene una densidad
de 5,25 g/mL al 12%.

Why are people not able to skip a dive to the deepest part of the ocean

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon