Is the reaction with potassium iodide solution and Lead (ll) nitrate solution a physical or chemical change

A. physical change

B. chemical change

how many grams of phosphorus (P4) react with 35.5L of O2 at STP to form solid tetraphosphorus decaoxide

A 2.0 L sample of hydrogen expanded to a new volume of 5.5L whole its pressure decreased to a 0.5 atm what was the original pressure of the example

The only large land mass (es) not part of a sovereign state is/are

Explain the voyage of water molecules as it boils in water

What is the density of 19.2 g of oak that has a volume of 25.7 cm3?

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.