That is about 3 gm.
1 tablespoon fresh rosemary equals 1 teaspoon dried
One small sprig of rosemary converts to 1/2 a teaspoon of dried rosemary.
No, it will not.
4 tsp of dried rosemary equals 1/4 cup fresh.
For rosemary, the ratio is three to one, fresh chopped to dried. So if your recipe calls for 2 tsp. of dried rosemary and you would rather use fresh, you will need three times as much, or two tablespoons of fresh chopped rosemary leaves.
Sure, why not.
No, it has no properties that would repel snakes.
Approximately one teaspoon of dried rosemary equals one tablespoon of fresh. (Approx. 1 tsp dry = 1 Tbsp fresh)
It is said that diesel fuel can be used to repel snakes in a yard. Another good method that can be used for repelling snakes is to spread mothballs along the perimeter of the yard.
For fresh rosemary substitute 1/4 tsp dried rosemary for each tsp fresh required Or equal amounts of oregano OR basil. For dried rosemary substitute: Dried savory, tarragon, or thyme.
Usually about three times as much, but if a recipe calls for fresh, do your best to use fresh. Dried rosemary is one of those herbs that does not do very well dried. Fresh vs dried makes a huge difference. Also, depending on the recipe, if you're using dried rosemary, don't leave it in the food. Let it sit to soak the flavor in and then strain/take it out.