Calendar: 1886-1887 Page 738

740 CLOTHWORKERS' SCIENCE EXHIBITIONS glass be 00 what mass of mercury will overflow when the temperature is raised to 90 from glass vessel which contains and is just filled with 400 grammes of mercury atO What relation exists between the temperature pressure and volume of given mass of gas cubic foot of air at 100 is cooled down to and at the same time its pressure is halved find its new volume the coefficient of expansion of air being 275 Describe the method of measuring the specific heat called the ί method of mixtures copper calorimeter having mass of 100 grammes contains 400 grammes of water at 15 into this are placed 265 grammes of water at temperature of 91 and the final temperature is 19 find the specific heat of copper -ftnorgamc Cfytmfctnn Give an example of the decomposition of compound body by two other bodies acting together neither of which would decompose the compound if used alone If the atomic weight of copper be 635 how much water would be obtained by the complete decomposition of 100 grammes of black oxide of copper in current of hydrogen Which of the acids is considered the most powerful as regards acid character Refer to ome experimental evidence Suppose ammonia gas to be completely decomposed by chlorine gas what would be the relative volumes of the two gases and of the products of the decomposition Give short description of the process for extracting phosphorus from calcium phosphate If the specific gravity of nitrogen be 097 and that of hydrogen 069 find the specific gravity of gaseous ammonia salt in prismatic cystals is heated in retort it melts and boils entirely away without odour while much water is condensed in the neck of the retort and large volume of gas issues from the opening Name the salt