A. calcium tetraoxosulphate (IV)
B. calcium hydrogentrionocarbonate (IV)
C. calcium hydroxide
D. calcium trioxocarbonate (IV)
Correct Answer:
Option D – calcium trioxocarbonate (IV)
Explanation
Calcium hydrogen carbonate, often present in temporary hard water, is boiled in a kettle to remove the hardness. In the process, a scale forms on the inside of the kettle in a process known as furring of kettles. This scale is composed of calcium carbonate.
Hypothesis Testing
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
Sampling Error And Sampling Bias
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
Sample And Sampling Techniques
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
Sources Of Literature - Project Writing
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
Research Proposal Vs Research Abstract - Educational Research
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
Copyright warnings! Do not copy.
![A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]")
