A substance added in The final stages to remove sulphur from coal is

Bronze is an example of which of the following: element atom solution solvent

How does adding an iron bar to a solenoid affect the magnetic field of the electromagnet? a. It changes the magnetic field to a current. b. It changes the magnetic field's direction. c. It increases the magnetic field's strength. d.

How to balance a chemical equations

Potassium dichromate (K2Cr2O7) is used in tanning leather, decorating porcelain and water proofing fabrics. Calculate number of chromium atoms in 78.82 g of this compound.

Tissue engineering is beneficial for which of the following reasons? A. Stem cells are more powerful than any device. B. Stem cells are stronger than any other material. C. Stem cells automatically create a perfect organ shape and size. D.

The total solute concentration of a red blood cell is about 2%. Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. Which of the following solutions will cause a red blood cell to shrink? a.

A geologist discovered fossils of marine animals in a layer of sedimentary rock in the desert. Based on this discovery, what conclusion can the geologist draw?

How do metals form chemical bonds with other metals?

Maple syrup has a density of 1.325 g/ml, and 100.00 g of maple syrup contains 67 mg of calcium in the form of ca2 + ions. what is the molarity of calcium in maple syrup?

When an object is lifted 6 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 18 meters off the ground, its potential energy is A. six times as much. B. the same. C. three times as much. D.