How would you make 1 liter of a 1 m solution of cacl2 (molecular weight =111 g)?

Dissolve 111 grams of CaCl2 in 1 Liter of water and it would give 1 M solution.

Explanation:

This is simple, if you want to make 1M solution of any substance just take one mole of that substance and dissolve it in one decimeter cube or one liter of water.

And one mole of a substance equal to the molecular weight of that substance taken in grams.

So you have to dissolve 111 grams of CaCl2 in one liter water and it would make 1 M solution of CaCl2.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

the answer would be knowledge about cars!