Calculate the molecular formulas of the compounds having the following empirical formulas and molar masses: C₂H₅, 58 g/mol; CH, 78 g/mol; and HgCl, 236.1 g/mol.

Given an acidic solution with a pH of 4.5, what is pOH of the same solution? A) 0 B) 7 C) 9.5 D) 14

Sodium atom Sodium has an atomic number of 11. Which atom would form an ionic bond with a sodium atom? Select one: a. Helium atom b. chloride atom c. Carbon atom d. oxygen atom

It is not advisable to wear clothes made of synthetic fiber while working near fire because?

A horizontal tube carrying hot water has a surface temperature of 355.4 K and an outside diameter of 25.4 mm. The tube is exposed to room air at 294.3 K. What is the natural convection heat loss for a 1 m length of the pipe?

Beryllium chlorite is formed when a beryllium cation with charge 2 + combines with a chlorite ion with charge 1-. How will you derive the formula for beryllium chlorite?

Name the compound K3 (PO4) 3

How many grams of silver chloride (AgCl) can be produced if you start with 12.5 grams of barium chloride (BaCl2) ? 2AgNO3 + BaCl2 = = > 2AgCl + Ba (NO3) 2

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4 HCl (aq) + MnO 2 (s) ⟶ MnCl 2 (aq) + 2 H 2 O (l) + Cl 2 (g) 4HCl (aq) + MnO2 (s) ⟶MnCl2 (aq) + 2H2O (l) + Cl2 (g) A sample of 43.

Calculate how many moles of glycine are in a 160.0-g sample of glycine. express your answer using four significant figures.

Which of the following words correctly describes CO2? Select all that apply A. Its a substance b its a compound c its a element D its a mixture