Recent content by Ose90

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    What is the rate of water decreasing in a hemisphere bowl when the depth is 6cm?

    Hi tiny-tim, thanks for replying. Glad to tell you that I have solved it. However, I will still write down my solution to see if it is correct. For the first question, I imagine the right side of the semi-circle displaced vertically, I get the equation (x-0)^2 + (y - r)^2 = r^2...
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    What is the rate of water decreasing in a hemisphere bowl when the depth is 6cm?

    A hemisphere bowl of radius 12cm is initially full of water. Water runs out of a small hole at the bottom of the bowl at a rate of 48pi cm^3 s^-1. When the depth of the water is x cm , show that the depth is decreasing at a rate of 48/[x(24-x)] cm s^-1 Also, find the rate at which the depth is...
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    Chemistry What Is the Molecular Formula of the Hydrocarbon in This Combustion Analysis?

    Homework Statement 6.0 cm^3 of a gaseous hydrocarbon was sparked with 34.5 cm^3 of oxygen. The volume of the gaseous products after cooling to room temperature was 22.5 cm^3. The volume was reduced to 4.5 cm^3 on passing the gases through aqueous potassium hydroxide. What is the molecular...
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    Finding molecular formula from volume of products

    Sry I have posted this thread in the wrong section. Thread should be closed, sorry moderator.
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    Finding molecular formula from volume of products

    Hello sir and madam, I would be grateful if you can help me solve this question. 6.0 cm^3 of a gaseous hydrocarbon was sparked with 34.5 cm^3 of oxygen. The volume of the gaseous products after cooling to room temperature was 22.5 cm^3. The volume was reduced to 4.5 cm^3 on passing the gases...
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