A saturated solution of NH4Cl was made at 50°C in 100 g of water. if the tempature is raised to 90°C, how much more NH4Cl must be added to make the solution saturated? A. 72g B. 52g C. 124g D. 20g. (no units)​

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Which statement describes james chadwick’s discovery.