What is the molar mass of potassium oxide, K2O?

A. 47.0 g

B. 110.0 g

C. 94.0 g

D. 55.0 g

How many electrons in mole will discharge 2g of Copper 2 ions

Which of the following is not a type of bone?

Which list of elements consists of metalloids, only?

A plastic bottle is closed outdoors on a cold day when the temperature is - 15.0°C and is later brought inside where the temperature is 21.5°C.

Question 12 A tank at is filled with of boron trifluoride gas and of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas.

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.