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Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL. Answer each of the following questions by selecting the correct choice.a)Which sample has a larger mass?b)Which sample contains more molecules?c)Which sample contains more atoms?d)Which sample contains more oxygen atoms?
Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O. What is the empirical formula for ephedrine
Visualize whats happening at the molecular level and explain how your products wind up in the Hickman's collection well. What would happen if you placed the Hickman above the water condenser?
Measurements also show that a certain sample of the unknown compound contains 6.9 mol of oxygen and 2.32 of chromium
what are the practical properties of acetone and detailed explanation of its properties.
Lewis Structure for a Nitrate Ion (NO3-1). For the correct structure of the nitrate ion, what is the bond angle from O-N-O
If the density of N2 gas in a rigid flask is 0.243 g/L at 18 °C, what is the pressure of nitrogen in the flask if it is heated to 36 °C
What is their role in this reaction? In the case of this particular example that you watched, where would each of these ions have come from?
What is the maximum kinetic energy of a photoelectron ejected from cesium by 555 nm light? Note that if the wavelength of the light used to irradiate the cesium surface becomes longer than 660 nm, no photoelectrons are emitted.
ideal gas on a cool morning (11*C). The air is heated to 103*C. What is the volume of the air in the balloon after it is heated?
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL
The ratio of oxygen (Oxygen-16 and Oxygen-18) isotopes is measured and used to determine the approximate temperature during the time that part of the ice core was formed. This method is one example of a proxy. In a few sentences, explain what a pr..
Consider a piece of gold jewelry that weighs 9.55 g and has a volume of 0.660 cm^3. The jewelry contains only gold and silver, which have densities of 19.3 {rm g}/{rm cm}^{3} and 10.5 {rm g}/{rm cm}^{3}, respectively.
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