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How many branches of hcl it company?
HCL Technologies is a global IT services company with operations in over 50 countries. It has several offices and delivery centers around the world to cater to its clients' needs.
How do you prepare 3 percent hydrochloric acid from concentrated hydrochloric acid?
I always start a question like this by making 100 mL. 25% of 100 mL is 25 mL. So 25 mL HCl + 75 mL of whatever you are making it in (hopefully water).If your final volume is not an easy number, just multiply 25% times the final volume to get the volume you need of HCl, then subtract that number from your final volume to get the mL of the other component (water). When you add the two together, you should get your final desired volume. NOTE: I need to retract this answer for acids. The below answer is more correct than mine for HCl. My answer works for pure liquids.ANS#2:Always add acid to water, never add water to the acid when you prepare a dilution. Hydrochloric acid exists only as a solution of gaseous Hydrogen Chloride dissolved in water. Since it is a gas before dilution, you will need to calculate your ratios by weight/volume (w/v). At standard conditions the most concentrated solution of HCl(aq) is 40% (w/v). 38% (w/v) is known as 'concentrated grade'. 27% (w/v) is commonly available. You will be starting almost where you need to be if you are using 27% acid.Initial data:100 ml of 27% (w/v) has 27 grams of HCl dissolved into it. 25% would by the same reasoning, have 25 grams of HCl dissolved. The gram molecular weight of HCl is 1.00794 g/mol + 35.453 grams/mol = 36.461 grams/mol. That means we need to get either 25 grams of HCl or 0.686 moles into the final 100 ml. Calculations:Say you start with 27% (w/v) solution: 100 ml has 27 grams of HCl so (27/100 = 25/x , x = 92.59) 92.59 ml has 25 grams of HCl. Put 92.59 ml of the 27% solution into a container and slowly pour it into a container holding (100 ml - 92.59 ml =) 7.4 ml of distilled water. Et voila, you have 25% (w/v) Hydrochloric Acid. More Fun:You could also bubble the gaseous products resulting from reacting 0.686 moles of NaCl with excess H2SO4 through 100 ml of water and you have the same. 25% (w/v) HCl. (The calculations have been updated to correct the gmw for Hydrogen to 1.00794 g/mol.)
27.0 ml of 0.45 m naoh is neutralized by 20 ml of an hcl solution the molarity of the hcl solution is?
Given: 27 mL of NaOH, 0.45M; 20 mL HCI Need: M of HCI 27 ml NaOH*(1 L NaOH/1000mL NaOH)*(0.45M NaOH/1L NaOH)*(1mole HCI/1 mole NaOH)=0.012 0.012/0.02=0.607 M HCI (or rounded 0.61 M HCI)
What is the mass of 1 proton?
mass of proton 1.67262192369(51)×10−27 kg NB Note this in kg (kilograms) which is the normal S.I. unit of mass.
Is the mass of a proton much greater than the mass of electron?
1836 times the mass of an electronSo how do you calculate '1836 times the mass of a proton' ?Mass of proton = 1.673 x 10-27 or (10 to the power of negative 27)Mass of electron = 9.109 x 10-31 or (10 to the power of negative 31)Simply by dividing the largest mass (of protons) by the smallest mass (electrons):(1.67262 . 10-27) / (9.10939 . 10-31) = [1.67262 /9.10939] . [10(-27)-(-31)] =0.1836 . 10+4 = 1836
What is 27 over 10 as a fraction?
27 over 10 = 27/10 in fraction
What is 27 over 10 divided by 9 over 10?
27/10 divided by 9/10same as,27/10 * 10/9= 27/9= 3===
27-8x5 plus 10 equals?
27-8x5+10=?27-40+10=? -13+10=? =-3
What percentage is 27 out of 10?
27 out of 10 = 270%
What is 10 to the power of 27?
10^27 = 1,000,000,000,000,000,000,000,000,000
What is 27 over 10 reduced?
27/10
How many branches of hcl it company?
HCL Technologies is a global IT services company with operations in over 50 countries. It has several offices and delivery centers around the world to cater to its clients' needs.
When was otto frank released from the concentration camp?
on January 27 1945
What Is The Mixed Number For 27 Over 10?
Converting 27/10 to mixed number:Divide the numerator by the denominator.The remainder will be the numerator of the fractional part.27/10:= 27 ÷10= 2 r7= 2 7/10therefore: 27/10 = 2 7/10
What is the greatest common factor of 10 and 27?
The GCF for 27 and 10 is 1Factors of 27: 1, 3, 9, 27Factors of 10: 1, 2, 5, 10GCF (27, 10) = 1
What percentage is 27 out of 270?
27/270 = 1/10 = 10%
What is 27 to the nearest 10?
27 rounded to the nearest 10 is 30.
