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ans by explaining

50 cc of hydrogen are collected over mercury the level of which stands 20 cm above the sea level of mercury in the trough. if the atmospheric pressure be 760 mm, calculate the volume it will occupy when the level of mercury inside and outside the tube is made same.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

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.

The boiling point of liquids is very high what does it indicate