A sample of an element has a mass of 34.261 grams and a volume of 3.8 cubic centimeters. To which number of significant figures should the calculated density of the sample be expressed?

(1) 5 (3) 3

(2) 2 (4) 4

What is the reason water is a liquid at normal earth conditions when it should be a gas

How many molecules are in 8.2 moles of CO3

What is the effective nuclear charge experienced by the 2p and 3p electrons of a chlorine atom, respectively?

The movement of water from earths surface and back again

Which of the following questions is outside the scope of science? A. How religion and philosophy different B. What is the diet of the American alligator C. How hums digest protein D. How gravity affect in airplane's motion

A cracker crushed in water will test positive with iodine but negative with benedict's solution. A cracker crushed in water has another chemical called amylase added to it.

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not

Which mixture can be separated by using the equipment shown below?

El agua de Mar es una mezcla homogenea o disolucion Y El agua corriente Y El aire Y LA lejia Y Los refrescos con gas Y El suero fisiologico Y Las monedas Y LA leche Y LA gelatina Y Los productos de higiene Y El merengue

The component which dissolves in a solution is called the ...