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CH is not a molecule.
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How many moles are in 1 gram of Br?
1/80 = 0.0125
What is the molar concentration of 80 g of glucose dissolved in sufficient water to make 2 L of a solution?
The equation to find molar concentration is C= n/v (concentration= moles/volume). For 80g of glucose, you would first need to find the number of moles; n= m x mm (moles= mass x molar mass). Then you can input that number into the equation C= n/v.
How many hydrogen atoms in 80 water molecules?
Water is; H2O so; 80 * 2 = 160 hydrogen atoms
What is the molarity of a solution made by dissolving 6 moles of naoh in 3 kg?
2 mol/kg
What is the proton number of mercury?
80 protons
How many molecules of o2 are present in 1l air containing 80 percent volume of o2 at stp?
Please check the workings if you wish to understand how the problem is solved. At S.T.P., 1 mole of any gas = 22.4 Litres(It's a given. I assume you know this one.) Therefore, 1 Litre of a gas = 1/22.4 = 0.0446 moles Out of these 0.0446 moles, 80% is Oxygen gas. Number of moles of Oxygen gas = 0.0446 x 80% = 0.0446 x 80/100 = 0.0357 moles. 1 mole of any gas = 6.02 x 1023 units (This is also a given, known as the Avagadro's constant.) Therefore, 0.0357 moles = 0.0357 x 6.02 x 1023 = 2.15 x 1022 molecules of Oxygen gas.
What the mass of 5.0 moles of nitrogen atoms?
The atomic mass of the N atom is 14.0. This means that 1 mole of N atoms weighs 14.0g.Mass of 5.0 moles of N atoms (or 2.5 moles of diatomic nitrogen molecules, N2)= 5.0 x 14.0= 70g
What is the mass of 2.50 moles of oxygen gas?
The relationship between number of moles and mass is: n = m/MW Where n is the number of moles, m is the mass in grams and MW is the molecular weight (or molecular mass). Subsituting the numbers into the equation: 2.5 mol = m/32 (from O2(g), 16 from each oxygen) m = 2.5 * 32 = 80 grams This also means that there is approximately 1.5 x 1024 molecules of O2 in your sample.
What is the total number of moles in 80.0 grams of C2H5Cl?
The molar mass of an element is its atomic weight in grams. The atomic weight is on the periodic table. 1 mole C = 12.0107 g C. To calculate the number of moles in 80 g of C, do the following: 80 g C x (1 mole C/12.0107 g C) = 6.66 mole C = 7 mole C* *This answer has been rounded to the proper number of significant figures. When multiplying or dividing, the answer is rounded to the fewest significant figures used in the calculation. 80 only has one significant figure. Refer to the related link below concerning significant figures.
Calculate 80 percent and 82.54 percent how do you calculate the avg?
The average is the sum of the elements divided by the number of elements In other words, 80%+82.54% then divide the sum by 2.
How many moles are in each what 80.0g of NaOH?
2 moles 80/40= 2
How do you work out 30 percent of a number?
To calculate 30 percent of a number, multiply the number by 0.3. For example, 30 percent of 80 is equal to 80 x 0.3 = 24.
How do you calculate how many years are 80 months?
Divide the amount of months by the number of months in a year (12). Thus the number of years in 80 months is 80/12= 6.666666666. Therefore the number of years in 80 months is roughly 6 and a half.
What is the mass of kbr in 2.50 moles of the compound?
The mass number of potassium is about 39. The mass number of bromine is about 80. Total is 119. 119* 2.5 = 297.5. So 297.5 grams of potassium bromide has got 2.5 gram moles.
How do you calculate the molecular formula of a substance which contain 80 percent C and 20 percent H?
You can only calculate the empirical formula because you do not have a mass of this compound given. To do the empirical formula assume 100 grams and change percent to grams. Get moles. 80 grams Carbon (1 mole C/12.01 grams) = 6.66 moles C 20 grams hydrogen (1 mole H/1.008 grams) = 19.84 moles H the smallest becomes 1 in the empirical formula and the other number is divided by it, Thus; H/C 19.84 moles H/6.66 moles C = 2.9, which we call 3 so, CH3 --------------- is the empirical formula To get the molecular formula tour question needed to read; How to calculate molecular formula from such ans such mass of compound with these percentages of elements, Which, of course, your question did not provide. Then you would have divided that given mass by the mass total of the elements of the empirical formula, got a whole number by which you would have multiplied the numbers of your empirical formula to get molecular formula.
How many moles of tungsten atoms are in 4.8x10 25 atoms of tungsten?
The answer is B, 8.0 x 10^1 There are 6.023 x 10^23 atoms in one mole, of any substance. So simply divide 4.8 x 10^25 by 6.023 x 10^23, to get about 79.69 which if you convert into scientific notation, is about 8.0 x 10^1 the answer for me was A but that's on novanet
What is the mass in grams of 1.12 moles of SO3?
molar mass SO3 = 80 g/mole. 1.12 moles x 80 g/mole = 89.6 grams
