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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?
In 80 water molecules, there are a total of 160 hydrogen atoms. Each water molecule contains 2 hydrogen atoms. Multiplying the number of water molecules by the number of hydrogen atoms in each gives the total.
How many atoms are there in 80 grams of lead?
To calculate the number of atoms in 80 grams of lead, you first need to determine the number of moles of lead using its molar mass (207.2 g/mol). Then, you can use Avogadro's number (6.022 x 10^23) to convert moles to atoms. So, for lead, there are approximately 3.86 x 10^23 atoms in 80 grams.
How many moles are in 1 gram of Br?
There is one mole in approximately 80 grams of bromine (Br). Therefore, in 1 gram of bromine, there would be approximately 1/80 mole, which is equal to 0.0125 moles.
How many liters of C2H2 should be produced from 80 grams of H2O?
To calculate the amount of C2H2 produced from H2O, we need to consider the stoichiometry of the reaction. The balanced equation for the reaction is 2H2O -> 2H2 + O2 -> 2C2H2. From 80 grams of H2O, we can calculate the amount of C2H2 produced using stoichiometry.
How many moles of calcium is in 80 grams?
To find the number of moles in 80 grams of calcium, you would first calculate the molar mass of calcium (40.08 g/mol), then divide the given mass by the molar mass to get the number of moles. In this case, 80 grams of calcium would be 2 moles.
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.
How do subtract 80 percent from a number?
To subtract 80 percent from a number, first calculate 80 percent of that number by multiplying it by 0.80. Then, subtract the result from the original number. For example, if the number is 100, you would calculate 80 percent as 100 × 0.80 = 80, and then subtract: 100 - 80 = 20. The final result is the number after subtracting 80 percent.
If you have 10 molecules of SO2 gas in 125000 molecules of air what is the concentration of SO2 in parts per million?
To calculate the concentration of SO2 in parts per million (ppm), you need to first find the total number of molecules in the air. In this case, the total is 125000 molecules of air + 10 molecules of SO2 = 125010 molecules. Then, calculate the concentration of SO2 in ppm by dividing the number of SO2 molecules by the total number of molecules and multiplying by 1,000,000. This gives (10/125010) * 1,000,000 ≈ 79.99 ppm of SO2 in the air.
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 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 moles of so3 are in 20g of so3?
To find the number of moles, you first need to calculate the molar mass of SO3, which is 80.06 g/mol. Then, you can use the formula: moles = mass / molar mass. Thus, for 20g of SO3, you would have 20g / 80.06 g/mol = 0.25 moles of SO3.
How many molecules are in 366g CBr4?
To find the number of molecules in 366g of CBr4, first calculate the molar mass of CBr4 which is 331.63 g/mol. Next, use Avogadro's number (6.022 x 10^23 molecules/mol) to convert grams to molecules. Divide the given mass by the molar mass and then multiply by Avogadro's number to find the number of molecules.
How many hydrogen atoms in 80 water molecules?
In 80 water molecules, there are a total of 160 hydrogen atoms. Each water molecule contains 2 hydrogen atoms. Multiplying the number of water molecules by the number of hydrogen atoms in each gives the total.
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 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.
