How and why - Why does ice float on water

In what month is Earth farthest from the Sun? A. January B. July C. March D. October

How many total atoms of carbon, c, are contained in 5 c6h12o6?

Determine the ammonia concentration of an aqueous solution that has a ph of 11.00. the equation for the dissociation of nh3 (kb = 1.8 * 10-5) is determine the ammonia concentration of an aqueous solution that has a ph of 11.00.

Part A. 4 and Part B. In a hurry to complete the experiment, Anna withdrew two volumes of solution from Part A. 2 before the precipitate had settled. As a result, what dilemma might she have encountered in Part B

If one mole of Uranium has a mass of 238.029 g, 0.0550 moles of U has a mass of (blank) grams.

How many moles are in 12.5 g of H2O

How do the atomic number and the number of protons relate to one another? The atomic number tells us the number of protons The atomic number is protons + neutrons They do not Electron Cloud

Check my work? 150 g of an unknown liquid is heated with 24,975 kJ of heat to form 0°C to 75°C. Identify the unknown liquid. Substance C (J/g-°C) Water (ice) 2.05 Ammonia (liquid) 4.70 Ethanol 2.44 Gasoline 2.22 Water (liquid) 4.18 Water (vapour) 2.

The distance from the sun to the earth is 1.496x10^8 km. How long does it take light to travel from the sun to the earth

10. Airbags in automobiles contain the compound sodium azide, NaN3. A crash triggers the decomposition reaction of NaN3 to produce nitrogen gas, which causes the airbag to inflate. How many grams of NaN3 are required to produce 90.