Question 9 (1 point)
The reaction for the combustion of methane is
shown below. If 19.80g of methane reacts with
40.30g of oxygen, how much water will be
produced? Record your answer with 2 decimal
places.
CH,
methane
+
20,
oxygen
co
carbon dioxide
+ 2H,0
water

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.