How many moles of mgcl2 are there in 337 g of the compound?

Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank