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The mass ratio of \(\mathrm{H}: \mathrm{O}\) in a bottle of water is \(1: 8 .\) Predict the mass ratio of water in 10 bottles of water.

The mass ratio of C:H:O in natural vitamin C found in rose hips is \(9: 1: 12 .\) Predict the mass ratio of synthetic vitamin \(C\) synthesized in the laboratory.

State whether each of the following is a physical or a chemical property of gold: (a) yellow color (b) high density (c) conducts electricity (d) reacts with nitric acid

State whether each of the following is a physical or a chemical property: (a) Titanium is ductile. (b) Zinc generates a gas in acid. (c) Yellow phosphorus ignites in air. (d) Chromium conducts heat.

State whether each of the following is a physical or a chemical property: (a) Manganese bubbles in acid. (b) Silver is malleable. (c) Calcium turns dark in air. (d) Carbon grinds to a powder.

State whether each of the following is a physical or a chemical property: (a) Ether is flammable. (b) Bromine is a reddish-orange liquid. (c) Ethanol vaporizes at \(78^{\circ} \mathrm{C}\). (d) Steam condenses to water at \(100^{\circ} \mathrm{C}\).

State whether each of the following is a physical or a chemical property: (a) Electricity decomposes water. (b) Ice floats on water (c) Potassium metal fizzes in water. (d) Acetone dissolves in water.

State whether each of the following is a physical or a chemical property: (a) Sugar ferments to ethanol. (b) Ethanol dissolves in gasoline. (c) Ethylene glycol freezes at \(-12^{\circ} \mathrm{C}\). (d) Ethanol burns with a light blue flame.

State whether each of the following is a physical or a chemical property: (a) Iron oxidizes to rust. (b) Dry ice undergoes sublimation. (c) Lithium metal turns gray in air. (d) Plutonium radioactively decays.

State whether each of the following is a physical or a chemical change: (a) combustion (b) vaporization (c) sublimation (d) oxidation