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How many moles of potassium hydroxide are required to make 200cm3 of 0.5M solution?
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∙ 13y ago
0.1 moles
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∙ 13y ago
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What is the molarity of a solution made by dissolving 20g NaOH in 200cm3 of H20 help please?
Given that 200cm3 yieded 20g.therefore 22400cm3 which is the volume occupied by gas at s.t.p will contained:(22400cm3 times 20g) divided by 200cm3,which equals 2240g.but molarity is mass conc./molar mass,here molar mass of NaOH is 40.Hence the molarity is:2240/40 which equals to 56moles/g.
How do you make 1N hydrochloric acid from 5N hydrochloric acid?
Take 200 mls and dilute to exactly 1000 mls in a volumetric flask Applying the formula c1v1 = c2v2 1(1000) = 5V V=200CM3 Thus take 200cm3 of 5N HCl and make up to 1000cm3 with distilled water
What is the density of mass 1800 and volume 200 cm3 and the material is copper?
density= mass/volume =1800g/200cm3 divide density= 9 g/cm3
How do you find the hardness of a given water sample without using EDTA?
mention the salts causing temporary and permaneat hardness
What is the molarity of a solution made by dissolving 20g NaOH in 200cm3 of H20 help please?
Given that 200cm3 yieded 20g.therefore 22400cm3 which is the volume occupied by gas at s.t.p will contained:(22400cm3 times 20g) divided by 200cm3,which equals 2240g.but molarity is mass conc./molar mass,here molar mass of NaOH is 40.Hence the molarity is:2240/40 which equals to 56moles/g.
What is the density of a block of wood with a mass of 120g and a volume of 200cm3 power?
Density = Mass/VOlume = 120g/200cm3 = 0.6 grams per cm3
Does Lady Grey tea have caffeine in?
yes a huge amount. 200cm3 of it is squashed into 10g of tea bag!!
What is the density of a box of sand if the volume is 200cm3 and the mass is 6000 grams?
Density is 30 g/cm3
How do you make 1N hydrochloric acid from 5N hydrochloric acid?
Take 200 mls and dilute to exactly 1000 mls in a volumetric flask Applying the formula c1v1 = c2v2 1(1000) = 5V V=200CM3 Thus take 200cm3 of 5N HCl and make up to 1000cm3 with distilled water
200.0cm3 of 2.0 M K2SO4 solution are added to 800cm3 of water Find the molarity of the potassium ions in the resulting solution?
A fair question and some tricky points. Firstly, K2SO4 can be seen as 2K+[SO4]. If you put it into water, you get 2 potassium ions for each K2SO4. That's important. The rest is just wrestling with the numbers. We have 200cm3 of 2.0M K2SO4. How many moles is that? Well we'd have 2 moles in 1000cm3, so... (1000/200 = 5) we have 5 times less volume meaning 5 times fewer moles (2.0/5 = 0.4) so we have 0.4 moles K2SO4. Good. Now we put that into 800cm3 of water. There's a trick, here! It's not 0.4 moles into 800cm3 water, because our 0.4moles are ALREADY in their own 200cm3 of water. So remember to add the volumes up, too. But this just makes things so much easier for us! Because we end up with 1 litre which is the volume component of the molarity unit. (M = g/dm3 or g/L, same thing) So it's 0.4 moles of K2SO4 in 1litre of water, meaning 0.4M K2SO4. Finally....we want K+ ions, not K2SO4. Remember we had two K+ ions for every K2SO4? 2 x 0.4 = 0.8. So our answer is: we have 0.8M K+ solution in the end.
What is the density of mass 1800 and volume 200 cm3 and the material is copper?
density= mass/volume =1800g/200cm3 divide density= 9 g/cm3
How many ml is 200cm3?
1000 ml=10 cm3 so therefore 20,000 ml=200 cm3 1000 ml=1 L so therefore 20 L
What is the cubic capacity of rectangular prism measuring 5cm x 4cm x 10cm?
A rectangular prism is just a box or cuboid So the capacity is 5cm x 4cm x 10cm = 200cm3
What is the volume of a rectangular prism that is 5 centimeters wide 10 centimeters long and 4 centimeters high?
A rectangular prism that is 5 centimeters wide, 10 centimeters long and 4 centimeters high has a volume of 200cm3
How do you convert one metric unit to another metric unit?
Well, the only time you'd use this is in displacement of an irregular solid to find its density. In that case, if a liquid got displaced 200ml, you can convert it to cm3 like this: 200ml=200cm3
What is the density of a block of wood with a mass of 100 kg and a volume of 200 cm3?
100 kg/200cm3 = 0.5 kg/cm3 or 500 g/cm3. That would be very unusual wood since most woods are around 0.65 g/cm3. This particular wood is more than 300 times the normal density!
