0
What else can I help you with?
What chemical compound the shell of a clam made of?
The shell of a clam is primarily made of calcium carbonate. This compound gives the shell its hardness and strength to protect the soft body of the clam.
Why temporary hardness is removed from water by boiling but permanent hardness is not?
Permanent hardness is hardness (mineral content) that cannot be removed by boiling. It is usually caused by the presence in the water of calcium and magnesium sulphates or chlorides which become more soluble as the temperature rises.
Which chemical does not cause hardness of water?
Sodium bicarbonate (baking soda) does not contribute to water hardness. In fact, it can help to reduce water hardness by reacting with calcium and magnesium ions to form carbonate precipitates.
How do you calculate the hardness of water?
The hardness of water is calculated by measuring the concentration of calcium and magnesium ions in the water. This is typically done using a titration method with a chelating agent like EDTA. The results are then expressed in terms of calcium carbonate equivalents.
What is a solid product of the reaction between solutions of calcium chloride and sodium carbonate?
Calcium carbonate has a solubility of 0.0006g per 100g of water at standard temperatures so the precipitate formed will be that. Sodium Chloride is very soluble, with 35.9g per 100g of water.
What is soft made of?
Calcium Carbonate, with a hardness rating of 3.
What is soft scrub made of?
Calcium Carbonate, with a hardness rating of 3.
Do crayons contain calcium carbonate?
No, the crayons do not contain the calcium carbonate. Calcium carbonate and other foreign materials are usually extruded from crayon.
What are the minerals that are being removed by the vinegar in the shell of an egg?
The vinegar removes the calcium carbonate from the eggshell, which is the mineral responsible for the shell's hardness. This process dissolves the calcium carbonate, leaving behind the egg membrane.
What is the hardness of stalagmite?
Stalagmites are composed mainly of calcium carbonate, which has a hardness of 3 on the Mohs scale. This makes stalagmites relatively soft and susceptible to scratching.
What chemical compound the shell of a clam made of?
The shell of a clam is primarily made of calcium carbonate. This compound gives the shell its hardness and strength to protect the soft body of the clam.
Why all the hardness of water is expressed in terms of Calcium carbonate?
Calcium carbonate is commonly used to express water hardness because it is a major component of the mineral deposits that form in plumbing and appliances. It is also a stable compound that is not affected by changes in pH, making it a reliable indicator of overall water hardness.
Is the carbonate or the calcium the buffer in calcium carbonate?
The carbonate. Calcium is neutral.
What is the use of calcium carbonate in PVC?
Calcium carbonate is used as a filler in PVC to improve its mechanical properties and reduce production cost. It also helps to increase the stiffness and hardness of the PVC material while maintaining good impact resistance. Additionally, calcium carbonate can enhance the heat resistance and weatherability of PVC products.
What other substances cause permanent hardness?
Temporary hardness of water is due to the presence of calcium hydrogentrioxocarbonate(IV) which decompose on heating.when this water is heated calcium trioxocarbonate(iv) is form as insoluble and this brings the ca+ out of the solution as precipitate.once the ca+ re out of the solution soap can now lather well.
Why temporary hardness is removed from water by boiling but permanent hardness is not?
Permanent hardness is hardness (mineral content) that cannot be removed by boiling. It is usually caused by the presence in the water of calcium and magnesium sulphates or chlorides which become more soluble as the temperature rises.
The hardness of bone is due to what?
The hardness of bone is due to the calcium salts deposited in it.The exceptional hardness of bone, which allows it to resist compression, is attributed to the presence of inorganic hydroxyapatites. Hydroxyapatites such as calcium phosphates are particularly important for bone hardness. Organic substances such as collagen fibers contribute to tensile strength, but not to hardness.the presence of inorganic hydroxyapatites.
