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What is the molecular mass of a molecular compound with a freezing point -.520 degrees C when 6.21 g is dissolved in 500 g of water?
hi,
So i am currently doing a research project about different medications and how long it takes them to dissolve. I asked my teacher and apparently, I need to focus on chemical reactions and how long it takes them to have a chemical reaction.
I know with medicine the most common reaction is a direct combination/synthesis.
Do you have any ideas how to record when a reaction has occurred and how i can tell when one has occurred?
I need a response as quick as possible.
Thank you
So i am currently doing a research project about different medications and how long it takes them to dissolve. I asked my teacher and apparently, I need to focus on chemical reactions and how long it takes them to have a chemical reaction.
I know with medicine the most common reaction is a direct combination/synthesis.
Do you have any ideas how to record when a reaction has occurred and how i can tell when one has occurred?
I need a response as quick as possible.
Thank you
An impure sample of barium hydroxide of mass 1.6524 g was allowed to react with 100cm3 of 0.200 mol/dm3 HCL. When the excess acid was titrated against NaOH, 10.9cm3 of NaOH solution was required. 25.0cm3 of the NaOH required 28.5cm3 of the HCL in a seperate titration. Calculate the percentage purity of the sample of barium hydroxide.
An automatic gun fires ' n ' bullets with a speed of 1800 m/ sec in 3 seconds. The mass of each bullet is 25 gm. If 450N force is required to hold the gun in position.Find the number of bullets fired in each second.
A boy drops a metal ball from rest on sand.It hits the sand bed in one second and makes an impression of maximum depth 8.0 mm in the sand.What is the average deceleration of the ball as it hits the sand? Assume air resistance is negligible.
The ratio of the acceleration due to gravity inside a deep mine and that on the surface of the earth is 0.99. Find the depth of the mine,assuming that the density of the earth is uniform throughout and the radius of the earth is 6300 km?
Write differences between bond pair and lone pair?
36.5 mL of 0.18 mol/L NaOH are required to titrated 10 mL of nitric acid. Determine the concentration of nitric acid.
.52h of a cheese puff is burned under an aluminum can filled with 50.1 ML of water. The water temperature in the can increases by 2.3°C. how many calories did the cheese puff release?
Hello Sir/Ma'am, Good Evening. I have a query related to the plywood industry. They use wheat flour to cut the cost of phenol and urea. There is something i heard from someone that they can use some chemical powder which can be added to wheat flour to reduce the cost more and where they use 44kg of wheat flour after mixing this chemical powder this usage will be 20 to 25kg.
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#339914 on Dec 2023
#339914 on Dec 2023