An object is placed at a distance of 150 cm from a screen and a convex lens placed in between produces an image magnified \ times on the screen. Calculate the focal length and the position of the lens . please help me ASAP​

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption