Answer:
200 grams is the mass of 15% of the solution of lime that is formed by dissolving 30g of calcium hydroxide in water.
Explanation:
Mass of solution = M
Mass percentage of the solution of lime = 15%
Mass of lime or calcium hydroxide = m = 30 g
The Formula of mass percentage is given as :

On substituting the values in ab above formula :


200 grams is the mass of 15% of the solution of lime that is formed by dissolving 30g of calcium hydroxide in water.
Which one?????? Send a pic maybe I can help u if u want
Answer: Hope This Helps
Explanation:
1: The nephrons contain a filter called the glomerulus. The fluid that is filtered from the blood then travels down through a tubule. The tubule adjusts the level of wastes that will leave the body in the urine.
(I dont know the second part so hope this half answer helps a little bit. Sorry.)
Mole represents the a huge Avogadro number (way larger than atom), so we can eliminate option A and D.
And we know that Mercury is a solid , which mean it has greater mass than chlorine
So the answer is : B. 1.0 mol mercury (Hg) Atom
is the Calcium
because the calcium in group two which group two has 2 electron and also calcium and Potassium 4s sub level group potassium has 1 electron. :)