Which of the following substances is heterogeneous?

A. 3% hydrogen peroxide

B. The lint from your clothes dryer

C. A copper wire

D. Iron

E. Baking soda

Balanced rock has a mass of about36,000kg. if the acceleration due to gravity is 9.8 m/s2 what is the force that the rock is exerting on its pedestal

Why solar energy is called an inexhaustible resource?

Which element is more dense.

Whe. does water have its highest density

Two containers hold the same radioactive isotope. Container A contains 1000 atoms, and container B contains 500 atoms.

If a sample of gas occupies 400 ml at a pressure of 800 mm Hg, what will be it's volume if the pressure is reduced to 700 mm Hg

Why are water storage tanks usually built on towers or hilltops?

What is convection cell

One example of a decomposition reaction is the electrolysis of water. the chemical reaction can be expressed by the equation 2 h2o →2 h2 o2. the reactant (s) of this chemical reaction is/are?

When the positive ion of one compound replaces the positive ion of another compound?