Adding food color to water causes a color change. is this evidence of a chemical reaction? explain

How is a yeast cell different from an onion skin cell? 1. Yeast has chloroplasts. The onion skin cell doesn't have chloroplasts. 2. Yeast lacks a cell membrane. An onion skin cell has a cell membrane. 3. Yeast can reproduce by budding.

Liquid hexane (CH3 (CH2) 4CH3) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O). What is the theoretical yield of water formed from the reaction of 62.9 g of hexane and 158.

How does a balanced equation show the conversation of mass

Energy from food is measured in ... 1) Joules 2) Watts 3) Calories 4) Kilograms

An oxygen atom has a mass of and a glass of water has a mass of. Use this information to answer the question below. Be sure your answers have the correct number of significant digits.

Suppose you wanted to dissolve 109 g of sodium carbonate in enough water to make 6.00 L of solution. What is the molarity of this solution?

0.0055 in scientific notation

Mineral oil dissolves in hexane but not in ethanol

Which compound becomes less soluble in water as the temperature of the solution is increased

In 1909 Fritz Haber discovered the workable conditions under which nitrogen, N2 (g), and hydrogen, H2 (g), would combine using to produce ammonia.