To find the number of moles in 37 grams of calcium hydroxide, you need to divide the given mass by the molar mass of calcium hydroxide. The molar mass of calcium hydroxide (Ca(OH)2) is 74.1 g/mol. Therefore, 37 grams of calcium hydroxide is equal to 0.499 moles.
To find the mole fraction of oxygen, first convert the percentages to fractions: 37% oxygen is 0.37 and 63% nitrogen is 0.63. Since the total mole fraction in a mixture is 1, the mole fraction of oxygen would be 0.37/(0.37 + 0.63) = 0.37/1 = 0.37. Therefore, the mole fraction of oxygen in the gas mixture is 0.37.
To find the number of moles in 3.6 g of H2O, we first need to calculate the molar mass of water (H2O). The molar mass of water is approximately 18.0153 g/mol. Then, we use the formula: moles = mass / molar mass. Therefore, 3.6 g / 18.0153 g/mol ≈ 0.1997 moles of H2O.
Catalase produces the most oxygen at its optimal temperature of around 37°C, which is body temperature in humans. At this temperature, the enzyme's activity is maximized, leading to the highest rate of hydrogen peroxide decomposition and oxygen production.
Rubidium has 37 electrons, 37 protons, and approximately 48 neutrons.
To find the number of moles in 37 grams of calcium hydroxide, you need to divide the given mass by the molar mass of calcium hydroxide. The molar mass of calcium hydroxide (Ca(OH)2) is 74.1 g/mol. Therefore, 37 grams of calcium hydroxide is equal to 0.499 moles.
The Guinness World Record for the most moles on a person's body is held by a man named Satish Kumar who had 37 moles covering his body as of 2010.
The volume is 3,81 L.
To calculate the number of moles, you first need to find the molar mass of zinc phosphate (Zn3(PO4)2), which is approximately 386.11 g/mol. Then, use the formula: moles = number of formula units / Avogadro's number. Plugging in the values, you get moles = 5.546 X 10^37 formula units / 6.022 X 10^23 mol^-1, which equals approximately 9.22 X 10^13 moles.
To find the pressure of the oxygen gas, we can use the ideal gas law: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature in Kelvin. First, convert -37°C to Kelvin by adding 273.15 (235.15 K). Then calculate the number of moles of oxygen using the given mass (64.0 g) and the molar mass of oxygen (32 g/mol). Finally, substitute the values into the ideal gas law equation to find the pressure.
The formular you need is M = n/m (molar mass = amount of substance/mass), or n = m/MAluminium has a molar mass of 26.982 g/mol. The given mass is 3 grams. Therefore:n(Al) = 3g / (26.982g/mol) = 0.11mol
To find the mole fraction of oxygen, first convert the percentages to fractions: 37% oxygen is 0.37 and 63% nitrogen is 0.63. Since the total mole fraction in a mixture is 1, the mole fraction of oxygen would be 0.37/(0.37 + 0.63) = 0.37/1 = 0.37. Therefore, the mole fraction of oxygen in the gas mixture is 0.37.
0.28
37
37
37
It is exactly 37.