Chapter 1: Problem 7
Write the symbol for the following elements. (a) titanium (b) phosphorus (c) potassium (d) magnesium
Chapter 1: Problem 7
Write the symbol for the following elements. (a) titanium (b) phosphorus (c) potassium (d) magnesium
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The unit of land measure in the English system is the acre, while that in the metric system is the hectare. An acre is \(4.356 \times 10^{4} \mathrm{ft}^{2} .\) A hectare is ten thousand square meters. The town of Willington in Connecticut requires a minimum area of \(2.0\) acres of land for a single-family dwelling. How many hectares are required?
A recipe for apple pie calls for a preheated \(350^{\circ} \mathrm{F}\) (three significant figures) oven. Express this temperature setting in \({ }^{\circ} \mathrm{C}\) and in \(\mathrm{K}\).
Round off the following quantities to the indicated number of significant figures. (a) \(132.505 \mathrm{~g}\) (four significant figures) (b) \(298.693 \mathrm{~cm}\) (five significant figures) (c) \(13.452 \mathrm{lb}\) (two significant figures) (d) 345 oz (two significant figures)
Gallium is one of the few metals that can melt at room temperature. Its melting point is \(29.76^{\circ} \mathrm{C}\). If you leave solid gallium in your car on an early summer morning when the temperature is \(75^{\circ} \mathrm{F}\), in what physical state is the gallium when you return to your car and the interior car temperature is \(85.0^{\circ} \mathrm{F} ?\)
A waterbed filled with water has the dimensions \(8.0 \mathrm{ft} \times 7.0 \mathrm{ft} \times\) \(0.75 \mathrm{ft}\). Taking the density of water to be \(1.00 \mathrm{~g} / \mathrm{cm}^{3}\), how many kilograms of water are required to fill the waterbed?
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