What is the correct chemical formula for NaCl

Cacodyl, which has an intolerable garlicky odor and is used in the manufacture of cacodylic acid, a cotton herbicide, has a mass percentage composition of 22.88% C, 5.76% H, and 71.36% As and a molar mass of 209.96 g/mol.

You are building a shelf at home. As you sand the wood dust floats into the air. The air and dust from sanding create which of the following. a. a solution b. a pure substance c. a colloid d. a suspension

Magnesium carbonate dissociates to magnesium oxide and carbon dioxide at elevated temperatures. MgCO3 (s) MgO (s) + CO2 (g) A reaction vessel contains these compounds in equilibrium at 300°C.

A student measures the mass of a sample as 9.67g. Calculate the percentage error, given that the correct mass is 9.82

Write a molecular equation for the gas-evolution reaction that occurs when you mix aqueous hydroiodic acid and aqueous sodium sulfite.

Calculate the voltage if the current is 0.5 A and the resistance is 2.0 Ω.

Moseley's changes to the periodic table were based mainly on what part of the scientific process

Which of the following precautions is important when using a Bunsen burner or Meker burner? a. Set up your work space so that wires and cables cannot accidentally make contact with the flame or hot glassware and meltb.

What explains the fact that no machine is 100 percent efficient? A. Friction transforms mechanical energy into thermal energy. B. Thermal energy is transformed into mechanical energy by friction. C.

For each example of a phase change, identify whether heat is absorbed from the surroundings or released into the surroundings. A popsicle melts on a hot day. Rubbing alcohol evaporates from the surface of the skin.