Finally, useAvogadro's numberto determine the number of molecules in a drop of water. Avogadro's number tells us there are 6.022 x 1023molecules of water per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles:...
How many milliliters of ethanol are needed to prepare 250 mL of a 15.0% (v/v) solution? A) 15.0 mL B) 37.5 mL C) 88 mL D) 8.8 mL If you have 0.96 M AgNO_3 solution, how many liters of the solution would contain 6.44 moles AgNO_3? How many moles ...
Answer the following questions and show your work in detail: a) Balance the following equation: NH3(g) + O2(g) NO(g) + H2O(g) b) What is the limiting reagent in the above reaction? c) How many moles are present in 5 g of NH3? In 5 g of O2? d) if you rea ...
Answer to: If I have 50 mL of lead (II) nitrate, calculate how many moles are in 1 mL of the substance. By signing up, you'll get thousands of...
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C(H^(+))=10^(-pH) mol L^(-1) = 10^(-13)(mol)/(L) (pH= 13) =10^(-16)(mol)/(mL)(1 L = 1000 mL) i.e., 10^(-16) mol H^(+) ions are present in every milliliter of aolution. Thus, the number of H^(+) ions present in 1 mL. =(("Moles of " H^(+))/...
From 200 mg of CO(2), 10^(21) molecules are removed. How many grams and moles of CO(2) are left.
Example: What is the molality of a solution of 3 grams of KCl (potassium chloride) in 250 ml of water? First, determine how many moles are present in 3 grams of KCl. Start by looking up the number of grams per mole of potassium and chlorine on aperiodic table. Then add them together...
order that they cancel and leave us with the units we want. So, in the present problem, we have M which has units of moles/liter and we have mls which we will convert to liters. Then we will also have to change moles to millimoles (mmole) since that's what the question asks ...
There are 1,000 millimoles in 1 mole: (0.00645 mol NaOH/1 L)x(1000 mmol/1 mol) = 6.48 mM NaOH. A one liter solution that contains 259 milligrams of NaOH is thus a 6.48 mM solution.Converting From mmol/L to mg/L Say you have a 10 mM solution of MgCl2. What is the ...