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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 !
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.
Where do you get sand in stores?
First of all JUST ASK SOMEONE and also if your even gonna ask us TELL US WHICH STORE!
What does the amount of red Doppler shift indicate?
It indicates how fast an object is moving away from us.
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 in which 0.800 moles of sodium hydroxide is dissolved in 1500 ml of solution?
n=CV/1000 Where n = number of moles, C= Molarity concentration of the solution, and V= volume of the solution in milliliter's We are given, n=0.150, V=8.16 liters(8160 milliliters)and C is not given. Solving for C from the equation above we get: C=(n*1000)/V C= (0.150*1000)/8160 C= 0.018 The molarity of the solution is 0.018
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 country sponsored Roald Amundsen?
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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 !
Ask us anythingWhen naming a molecule how do you indicate that the carbons on either side of the double bond are pointing in opposite directions?
Use the prefix trans- (Apex)
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.
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
Does a us passport card indicate if your SINGLE OR married?
no it doesn't indicate if a person in married or single.
What does a URL ending with us indicate?
.us = United States, not commonly used.
What do you mean by saying ask us anything'?
by 'ask us anything' we mean literally, ask us anything!you can ask anything from the war of 1812 to todays technology.so go ahead, ask us anything!
Who is us in Ask us anything?
The 'us' in 'Ask us anything' is - You, me and the rest of the whole WikiAnswers community !YOU are the us.
