1. your skin is full of nerves. The skin feels the cold temperature which tells the nerves it is cold. the nerves then send signals to target muscle to start shivering. the rapid movement of the muscles then create heat, which keeps your body temperature where it should be.
2. if a person has high blood glucose levels, that means the body has too much sugar. This could mean that the pancreas is not producing enough insulin, which is a hormone that helps your body use the sugar for energy.
Alkaline earth metals
group 2 (IIA)
According to Arrhenius definition of acid bases: An acid donates ions in aqueous solution and a base donates hydroxide ions in aqueous solution.
So the given statement that a substance that forms hydroxide ions in aquoeus solution is true.
Example of a base giving hydroxide ions in water:
Answer:
pH = 10.4
Explanation:
pH = -log [H⁺] = -log(4.1 x 10⁻¹¹) = -(-10.4) = 10.4
Your answer is choice C. That is solid sodium chloride never dissolves to form sodium ions and chloride ions.
Going further to explain, have a look at the question again, we are told that James Proton prepares a saturated solution of sodium chloride in a beaker by adding solid sodium chloride and stirring.
Then when James finishes, crystals of sodium chloride are observed at the bottom of the beaker.
This implies that no more salt was dissolving since the saturation point was reached.
Again suppose he increased the temperature of the reaction, more salts could have dissolved.