Explain the difference between a) constant and proportional error. b) absolute and relative error. c) population mean and sample mean d) quantitative and qualitative analysis in analytical measurement.

The number of protons plus neutrons in the atom is called its?

2. A sample of neon gas has a volume of 87.6 L at STP. How many moles are present?

What's the formula for copper (I) phosphate

Explain the reaction of metals with water.

Select all of the true statements about empirical and molecular formulas. A. The molecular and empirical formulas for a compound have the same ratio of atoms. B.

Balance the following reaction. A coefficient of / "1/" is understood. C4H10 + O2 → CO2 + H2O.

Is honey a pure substance or mixture

What is lewis structure?

The measured dipole moment of BrCH₂CH₂Br is 1.0 D. Which one of the following statements about 1,2-dibromoethane is false? A. It may exist entirely in the anti conformation. B. It may exist as a mixture of anti and gauche conformations. C.

Impure benzoic acid was dissolved in hot water. the container of solution was placed in an ice-water bath instead of being allowed cooling slowly. what will be the result of cooling the solution in this manner