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What is alkaline nasal wash?
20g of sodium chlorid + 20g of sodium bicrbonat + 20g sodiumborate (Borex)
How many moles of so3 are in 20g of so3?
The molar mass of sulfur dioxide is 64,066 g.
A solution of NaOH contains 20g of this compound in 2dm3 of this solution . What is molarity of this solution?
This sodium hydroxide solution has a molarity of 0,25.
How many grams of naoh are needed to prepare 500ml of 125M naoh?
I think you may have missed a decimal point somewhere. 125M of NaOH would be a solution of sodium hydroxide containing 125 moles per litre. One mole of a compound is the same number of grams as the molecular weight of the molecule. Sodium hydroxide has a molecular weight of 40 ( sodium 23, oxygen 16, and hydrogen 1), so a one molar solution would have forty grams of NaOH per litre. 500ml of a 1M solution would contain 20g. 500ml of a 125M solution would need 2 500g. 1L of a 125M solution would need 5 000g of sodium hydroxide in the litre. The maximum solubility for NaOH in water at 20 degrees is 1110g per litre, so if you tried to dissolve 5 000g in a litre you would be left with 3 890g undissolved. A 1.25M solution would have 1.25 times 40g per litre, which is 50g per litre. 500ml of this solution would have half this amount of NaOH, or 25g.
How do you prepare 0.5 N NaOH solution?
There is 0.5 moles of NaOH per litre To calculate 0.5 molar NaOH first know the molecular weight of NaOH i.e 40 now multiply the number of moles of NaOH you have (0.5) found as above. so to find the number of grams of NaOH we needed to start with (0.5) * (40) = 20g So dissolve 20g of NaOH in one litre of the solution to prepare 0.5 molar solution
How many moles in 20g of magnesium nitrate?
There are 0.13 moles in 20 grams of magnesium nitrate.
What is alkaline nasal wash?
20g of sodium chlorid + 20g of sodium bicrbonat + 20g sodiumborate (Borex)
How many moles of so3 are in 20g of so3?
The molar mass of sulfur dioxide is 64,066 g.
A solution of NaOH contains 20g of this compound in 2dm3 of this solution . What is molarity of this solution?
This sodium hydroxide solution has a molarity of 0,25.
0.5 N sodium hydroxide how to prepare?
Weigh 20g. sodium hydroxide pillets pour it into a clean and dry 1L measuring flask. Dilute it with 200 mL of distilled water vith vigourous shaking, then dilute with distilled water up to the mark of 1000mL. Stand it for few hours. Check, it should be clear solution and then standardise it with potassium hydrogen phthallate OR oxalic acid.
How many moles are in 3 moles of HF?
Moles = Mass/Molar Mass.Using this equation, we can take 25/(1.0 + 19) and find that it is equal to 1.25 moles.Keep in mind that very few significant figures were used for this example (2), and that if accuracy is to be expected, as many as possible should be used.
Which has more molecules 16g of CO or 20g of N2?
There are 6.023x10^23 molecules in one mole of a compound. So now, you have to find how many moles of each compound you have. CO's molecular weight is (12+16) = 28 g/mol N2's molecular weight is (14+14) = 28 g/mol So you find the moles of each. moles of N2 = 20g/ 28g/mol = .714 moles moles of CO = 16g / 28 g/mol = .571 moles So, N2 has (.714 *6.023x10^23) has 4.3 x10^23 molecules and CO (.571 *6.023x10^23) has 3.4x10^23 molecules. So, 20g of N2 has more molecules than 16g of CO
How many grams of naoh are needed to prepare 500ml of 125M naoh?
I think you may have missed a decimal point somewhere. 125M of NaOH would be a solution of sodium hydroxide containing 125 moles per litre. One mole of a compound is the same number of grams as the molecular weight of the molecule. Sodium hydroxide has a molecular weight of 40 ( sodium 23, oxygen 16, and hydrogen 1), so a one molar solution would have forty grams of NaOH per litre. 500ml of a 1M solution would contain 20g. 500ml of a 125M solution would need 2 500g. 1L of a 125M solution would need 5 000g of sodium hydroxide in the litre. The maximum solubility for NaOH in water at 20 degrees is 1110g per litre, so if you tried to dissolve 5 000g in a litre you would be left with 3 890g undissolved. A 1.25M solution would have 1.25 times 40g per litre, which is 50g per litre. 500ml of this solution would have half this amount of NaOH, or 25g.
What is the best estimate for the mass of a fork?
20g
What would be the approximate pH of a 2wv solution of methadone hydrochloride in carbon dioxide free water?
Hi, I tried this one but got a weird answer, anyway...... pH = -Log[H+] (H+ ion conc. in mol/L) and there's one H+ per molecule of methadone HCl. At 2% w/v there is 2g in 100ml and therefore 20g in 1L. how many moles of MethadoneHCL in 20g? Calc using MW which is 346.5. You have ( 20/346.5 moles of the drug and hence 20/346.5 moles of H+ ions) a 1:1 ratio. That works out as 0.0577 moles of H+ and using formula a pH of about 1.24.
How many grams are in 9kg 20g?
9,000 and 20.
How many grams in 20000 milligrams?
20,000mg = 20g
