Answer:
1. The reactants are HCl and Na2S
2. The products are H2S and NaCl
3. The balance equation is given below:
2HCl + Na2S —> H2S + 2NaCl
The best answer to report is 2.900 g/ml (answer A)
explanation
The best answer to report must be in four significant figures. 2.900 g/ml is therefore the best answer to report since in is in four significant. zeros placed after other digits but behind a decimal point are significant figures.,theerfore 2.900 has four significant figures
It can reduce heat loss by heating water. Also plants are based on the dry process, and it’s much better for the environment rather than any other conventional process.