Perform the following arithmetic operations, and report the result to the proper number of significant figures: (a)1.0267 cm x 2.508 cm x 12.599 cm, (b) 15.0kg ã·0.036 m^3, (c) 1.113 x 10^10 kg - 1.050 x 10^9 kg, (d) 25.75 ml + 15.00ml, (e) 46 cm^3 + 180.5 cm^3.

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car