How to find amount of water needed in dilution?What volume of 0.75M potassium hydroxide solution is needed to make 350 mL of a 0.15 M solution? Approximately what volume of water is also needed? I got a volume of 70. mL KOH, but how do I find the volume of water needed?
1. Find the Number of Moles of Each Element The molar mass of hydrogen is 1 g (rounding to one decimal place), so the number of moles present in the compound is 0.675/1 = 0.675. The molar mass of oxygen is 16 g, and the molar mass of calcium is 40.1 g. Performing the same ...
1. Find the Number of Moles of Each Element The molar mass of hydrogen is 1 g (rounding to one decimal place), so the number of moles present in the compound is 0.675/1 = 0.675. The molar mass of oxygen is 16 g, and the molar mass of calcium is 40.1 g. Performing the same ...
Moles are carnivores that make themselves at home in lawns rich in grubs and insects. When their food is seasoned with castor oil, they will go elsewhere for meals. (Wouldn’t you?) Mix up a spray of 3 parts castor oil to 1 part dish detergent; use 4 tablespoons of this concoction in...
Consider water given by the formula H2O. What are the mole ratios? Step 1: Compare your chemical formula with the general chemical formula. Identify a, b, c,.. and A, B, C,... with the number of moles and the atomic element. H corresponds to A 2 corresponds to a O correspo...
We can find the moola mass of a compound or an element from the molecular formula. To find the molar mass, we have to add the molar mass of each atom present in the molecule.Answer and Explanation: We have the following given data {eq}\begin{align} ~\text{ Mass of water is} ~m...
Calculate the number of moles of water in 600 grams of water (H2O). Find hydrogen and oxygen on the periodic table. Step 2 Set up the following equation relating grams to moles: x moles H2O = (1 mole H2O/18 grams H2O) x (600 grams H2O) Step 3 Solve the equation in Step 2 to ...
1. Outbreaks of the water vole Arvicola terrestris cause severe damage in grasslands of upland regions of Europe. The sheer speed of this phenomenon is a challenge to effective pest control measures. While there has been some research into factors that promote outbreaks, especially landscape composit...
How many atoms of H are there in my sample? How many moles of MgS are present in a given mass of 5.6 g? What are the steps to find Grams to Moles and Moles to Atoms? Calculate the mass in grams of a single water molecule. Express your answer using four ...
Assume one mole of solution so your mole fraction is now simply the moles of solute. Subtract the moles of solute from the total (one mole) to get moles of water. So you now know the moles of solute and the moles of water. Convert moles of water to grams of water using the molar ...