Which of these is an appropriate instrument to measure mass?

balance

scale

ruler

graduated cylinder

What's the physical properties of a molecular solid, in regards to its physical properties of formation?

A reaction container holds 5.77 g of P4 and 5.77 g of O2. The following reaction occurs: P4 + O2 → P4O6. If enough oxygen is available then the P4O6 reacts further: P4O6 + O2 → P4O10. a. What is the limiting reagent for the formation of P4O10? b.

When you add together water and sodium, was any gas produced in the reaction?

What is the change in enthalpy when 250 g of water vapor condenses at 100oC? (ΔHv = 40.67 kJ/mol)

A tank of methane gas contains 2.8 m³ of the gas at 20°C. The tank has a pressure-release valve that releases gas into a secondary tank that will hold 0?2m³ of gas if the pressure rises.

Over millions of years, how do weathering and erosion change a mountain made of solid rock

3H2 (g) + N2 (g) 2NH3 (g) This reaction has a equilibrium constant of 4.51x10-5 at 450 °C and initially contains 5.4 atm NH3, 2.7 atm N2, and 1.4 atm H2.

How many electrons are in the highest energy level of sulfur? A. 2 B. 8 C. 6 D. 4

Two identical atoms from Area B bond together. What type of bond will they most likely form A. Electrostatic B. Metallic C. Ionic D. Covalent

Why are molecule atoms as far away from each other as possible