What is the percent composition by mass of nitrogen in the compound n2h4

An engineer chooses to use bamboo as a building material because it grows quickly and needs little space to grow. This is an example of Apex

Predict the precipitate that forms when aqueous solutions of silver nitrate an potassium chloride react to form products in a double replacement reaction?

Which pair of atoms has the highest electronegativity difference? ca, f, h, p, na

A sample of carbon monoxide gas has a volume of 3.45 L and a pressure of 2.82 atm, under a constant temperature of 28 "C. What is the new volume, if the pressure is increased to 4.2 atm?

Which of the following masses is/are equivalent to seventy billion metric tons? 1) 7.0x10^10 metric tons 2) 0.070 trillion metric tons 3) 70,000 million metric tons 4) all of them are equal to seventy billion metric tons

Calculate the molar mass of NH4NO3.

Thirty grams of lead oxide and fifteen grams of ammonia react completely to produce solid lead, nitrogen gas, and liquid water. What will be approximate mass of all three products? 10 g 15 g 45 g 450 g

The smallest unit of charge is - 1.6*10-19 C, which is the charge in coulombs of a single electron. Robert Millikan was able to measure the charge on small droplets of oil by suspending them between a pair of electrically charged plates.

An unknown material has a mass of 5 g and a volume of 7.25 cm3. What is the density of the material? Round to the nearest tenth.

How can light be emitted from an atom in ground state