When ethanol is burned, it's converted into carbon dioxide and water. Does the ethanol undergo a physical change or a chemical change? Explain?

In a balanced equation, the same number of each kind of atom is shown on each side of the equation. calculate the number of iron (fe), oxygen (o), and carbon atoms (c).

Nitrate is a common contaminant coming from run off from fertilizer use, leaking from septic tanks and sewage; and erosion of natural deposits. The maximum contaminant level (MCL) of nitrate (measured as Nitrogen) is 10.0mg/L in drinking water.

Draw the reaction mechanism the reaction between 2-methylpent-2-ene and chlorine. State the type of reaction. Label the electrophile, intermediate and final product.

Suppose you have an aqueous solution containing 158.2 g KOHper liter, its density is 1.13 g/cm3. You want to prepare a0.250 molal solution of KPH, starting with 100.0 mL of the originalsolution. How much water or solid KOH should be added to the100.

352 mL of chlorine exerts a pressure of 680 mmHg. What will the volume be if the pressure is changed to 161.3 kPa?

A gas occupies a 1.5 L container at 25 degrees Celsius and 2.0 atm. If the gas is transferred to a 3.0 L container at the same temperature, what will be its new pressure? a) 3.0 atm b) 2.0 atm c) 1.0 atm d) 4.0 atm

The maximum amount of n2h4 (hydrazine) that can be prepared from 14 grams of nitrogen and 28 grams of hydrogen by the reaction n2 + 2 h2 = n2h4 is?

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container.

Why is fluorine a gas?

What is the empirical formula for a compound if a sample contains 3.72g of p and 21.28g of cl?-pcl5-pcl3-p2cl10-p2cl5