What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoride

Among three bases, x-, y-, and z-, the strongest one is y-, and the weakest one is z-. rank their conjugate acids, hx, hy, and hz, in order of decreasing strength.

What do all isotopes of an element have in common

Tuliskan persamaan yang menyatakan hubungan antara kecepatan panjang dan frekuensi gelombang

The direction of the electric field is everywhere tangent to the field-lines, in the sense of the arrows on the lines.

If an object weighs 40 n on earth what would it weigh on the moon

Government in market place economies have which of the following roles in dealing with imperfectly competitive markets

A 10 N force pulls to the right and friction opposes 2 N. If the object is 20 kg, find the acceleration.

Explain why data organization is an important part of scientific inquiry describe two types of graphs that can be used to organize and display scientific information

When conducting scientific research, any information that is found must be analyzed to determine its validity. John believes that UFOs and extraterrestrial life exist. The excerpts below are an eyewitness account of UFO activity in South Carolina.

How much work is needed to lift a 3kg mass a distance of 0.75m