For this you need the Atomic Mass of Al. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.
2.91 moles Al × (27.0 grams) = 78.6 grams Al
Number of neutrons = Atomic mass of a given isotope of Uuh - 116 116 is the number of protons. Mass number = p + n Uuh-290 has 174 neutrons. The mass number is 290. Uuh-291 has 175 neutrons. The mass number is 291. Uuh-292 has 176 neutrons. The mass number is 292. Uuh-293 has 177 neutrons. The mass number is 293.
The weight of 35 gallons will vary depending on what substance is being measured. For example, 35 gallons of water would be approximately 291 pounds. However, 35 gallons of a different substance, like gasoline or milk, would have a different weight.
About 291 nautical miles. Cabo San Lucas is at about 22*52' N, 109*54' W Puerto Vallarta is about 20*40' N, 105*16' W Plugging these into a distance calculator yields 291 nm. As an aside, this is a beautiful passage that is often a beam reach with the prevailing Northerlies blowing down through the Sea of Cortez. The continental shelf and warm currents makes for a lot of luminescence in the water in this area, so be sure to look for that at night. This is one of the most memorable times at sea during my circumnavigation.
It takes 333.51 or 334 joules to evaporate 1 gram of H2O.
False. The Paleozoic Era is not the longest time period in Earth's history; it lasted about 291 million years, from approximately 541 to 252 million years ago. The longest time period is the Precambrian, which encompasses the Hadean, Archean, and Proterozoic eons and spans roughly 4 billion years.
291 has four factors: 1, 3, 97, 291
Answer: 291 km = 180.819 mi.
291 liters is 76.87 US gallons.
There are 100 centimetres in one metre. Therefore, 291 centimetres is equal to 291/100 = 2.91 metres.
291 nautical miles = 334.88 miles.
The balanced chemical equation for the reaction between aluminum and sulfuric acid is: 2Al + 3H2SO4 → Al2(SO4)3 + 3H2. Therefore, 250g of H2SO4 would react with 108g of Al to form 342g of Al2(SO4)3 according to the stoichiometry of the reaction.
To find the number of moles of air in the flask, we need to use the ideal gas law equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. First, convert the volume to liters (125 mL = 0.125 L) and the temperature to Kelvin (18°C + 273 = 291 K). Then, calculate the number of moles: n = (PV) / (RT). Substituting the values, we get n = (739 torr * 0.125 L) / (0.0821 L atm/mol K * 291 K). Calculate to find the number of moles.
291
291
291 months would be 24.25 years (or 24 yrs and 3 months).
291
9 hp