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Updated: 10/16/2024

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What is the molarity of a solution prepared by dissolving 10.7 g NaI in 0.250 L?

To find the molarity, we first need to calculate the number of moles of NaI using its molar mass (149.89 g/mol). Then, we divide the moles of NaI by the volume of the solution in liters (0.250 L). This gives us the molarity, which would be around 1.43 M.

If 154 grams of glucose are dissolved to yield one liter of solution what is the molarity of the solution?

Molarity = moles of solute/Liters of solution Find moles glucose, which is molecular formula------C6H12O6 154 grams C6H12O6 (1 mole C6H12O6/180.156 grams) = 0.8548 moles C6H12O6 Molarity = 0.8548 moles C6H12O6/1 Liter = 0.855 M glucose ---------------------------

Why KmnO4 is used as self indicator?

As we all know that the potassium permanganate (KMnO4) is the dark purple color solution ...and in titration it become colorless ....so when the titration is completed ...and the other single drop of KMnO4 solution produce pinkish colour in a beaker ...which indicate that the reaction was completed just a single drop before .. we use indicator in a a reaction in order to indicate ...but we dont used indicator in titration with KMnO4 because it also indicate us by changing its color ...colorless to pink

Molarity of a solution containing 0.456 grams CaCI in 250ml of solution?

First off we multiply .456 by 4 to get it into weight per litre. This gives us 1.824 grams per litre. Next, I'll assume you made a mistake here. Ca is 2+ so you need TWO chlorines (Cl-). I.e. the molecular weight is actually 111g/mol. 1.824/111 is 0.01643 molar. Be careful, because the wrong molecular weight can throw your answer off hugely, especially a heavy atom such as chlorine.

Why could salt solution be used as an antiseptic for a cut?

A salt solution can be used as an atiseptic for a cut as first , salt solution is a preservative, (salt is used to preserve many foods ex pickles your grandma makes and secondly , it would create a hypertonic solution and literally exhaust all the microbes that would happen to be in the cut. GL with bio buddy !

Related Questions

What is the molarity of a hydrochloric acid solution prepare by diluting 200.0mL of 0.500 M HCl to a total volume of 1.00 L?

The molarity of the final solution can be calculated using the formula: M1V1 = M2V2. By plugging in the values, we get (0.500 M)(0.200 L) = M2(1.00 L). Solving for M2 gives us 0.100 M for the final molarity of the solution.

What is the molarity of a solution that contains 202 mol KCl in 7.98L solution?

Molarity means moles in a litre. So here we divide by moles by 7.98 to get moles in a litre. This gives us 25.3133 molar. This figure is very high (likely to be over saturation level in water), so I'm not sure if your figures are correct.

What is the molarity of a solution prepared by dissolving 10.7 g NaI in 0.250 L?

To find the molarity, we first need to calculate the number of moles of NaI using its molar mass (149.89 g/mol). Then, we divide the moles of NaI by the volume of the solution in liters (0.250 L). This gives us the molarity, which would be around 1.43 M.

What is the molarity of the solution obtained by diluting 12.500 mL of a 5.42 M calcium bromide solution to 500.0 mL?

For problems like these, (dilution/concentration) it is usually best to find out how many moles of solute you are working with. To do this, multiply the number of Liters you have by the Molarity (mol/L) of the solution:(.0125L)*(5.42M)= .0678mol (12.5mL=.0125L because there are 1000mL in 1L)Now that we know how many moles of calcium bromide we have, we can find the molarity of the new solution if it is .5L. Because molarity is just mol/L, we can just divide the amount of moles by .5, which gets us:(.0678mol)/(0.5L)= 0.136M

What is the molarity of a solution prepared when 75.0 ml of a 4.00 m kcl solution is diluted to a volume of 0.500 l?

Well, let's paint a happy little picture here. To find the molarity of the final solution, we use the formula M1V1 = M2V2. By plugging in the values, we find that the molarity of the diluted solution is 0.6 M. Just like adding a touch of color to a painting, diluting the solution creates a new concentration for us to appreciate.

What is the molarity of a solution in which 0.800 moles of sodium hydroxide is dissolved in 1500 ml of solution?

The molarity of the solution can be calculated using the formula: Molarity (M) = moles of solute / liters of solution. First, convert 1500 ml to liters (1.5 L). Then, calculate the molarity: M = 0.800 moles / 1.5 L = 0.53 M.

If 154 grams of glucose are dissolved to yield one liter of solution what is the molarity of the solution?

Molarity = moles of solute/Liters of solution Find moles glucose, which is molecular formula------C6H12O6 154 grams C6H12O6 (1 mole C6H12O6/180.156 grams) = 0.8548 moles C6H12O6 Molarity = 0.8548 moles C6H12O6/1 Liter = 0.855 M glucose ---------------------------

Ask us quantities indicate a direction and a magnitude Check all that apply.?

Displacement Velocity Acceleration

Calculate the molarity of a 10 percent aqueous solution of HCl?

molarity = mol / litre The concentration is 10% HCl in water, assuming this is expressed in w/v (weight to volume) as this is the normal way. The density of 10% HCl is unknown but will be estimated to be the same as water (although slightly incorrect), since no data is given. 1 L of which 10% are HCl is assumed to weigh 1000 grams. 10% HCl x 1000g = 100g of HCl. 100g of HCl is present in 1 L. The mw of HCl = 36.5g/mol, 100g/(36.5g/mol) = 2.74mol is present in 1 L. The molarity is 2.74mol / 1 L = 2.7 M (two significant figures) (Looking up hydrochloric acid in wikipedia tells us that the density of a 10% solution is actually 1048g/L and the actual molarity becomes 2.87M. The calculated number was close enough, but it shows that the density is important. Molality on the other hand is mol/kg, so with molality we can skip the unknown density problem. For practical purposes, molarity is still the mostly used one, because volume is easier to measure than weight in the laboratory when handling toxic solvents that are unhealthy to inhale.)

Why is molarity important in chemistry?

The molar volume equals 22.4 L and containing 6.02x10^23 (Avogadro's Number) molecular or atomic particles at standard temperature (273.15 K) and pressure (1 ATM), also knows as STP. This allows scientists to use the Ideal Gas Law of PV= nrt. Pressure (P), volume (V), moles (n), the radial gas law constant (r), and temperature. Using the molar volume and the Ideal Gas Law together allow them to determine how much space a certain number moles occupy dependent on temperature and pressure.

A 2.14-L sample of hydrogen chloride HCl gas at 2.61 ATM and 28C is completely dissolved in 668 mL of water to form hydrochloric acid solution Calculate the molarity of the acid solution Assume n?

Using this ideal gas equation PV=nRT. The question provided the following: P=2.61 atm V=2.14L R=0.0821 ( this is standard for any ideal gas) T= 28 C+273K= 301 n= unknown Since there is no volume change, so the volume is constant from the beginning of the reaction to the the end of the reaction. The only key information we are missing is the actual number of moles (n). We must rearrange the ideal gas equation to solve for moles. n=PV/RT n=(2.61)(2.14)/(.0821)(301) n=.2260 The question wants us to find the Molarity of the acid solution. We were given that HCL completely dissolved in 668mL of water. Molarity moles/Liters. 668mL=.668L M=.2260mol/.668L so Molarity of the acidic solution is .338.

What country sponsored Roald Amundsen?

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