S5 \( 0,1 \mathrm{~mol} \mathrm{SO}_{3} \) gazı 5,6 litrelik kapta \( 273^{\circ} \mathrm{C} \) lik sıcak-likta kaç cmHg basınç yapar?

7) Which box from Model 2 represents an element? * 1 point \( A \) B C D E 8) Which box from Model 2 represents a mixture of 2 elements? * 1 point A B C D E

Which of the following are double displace- ment reactions?

\( \leftarrow \rightarrow G \) cacademyzonecom///exam/103 [3-630] Compound (A): is produced from the reduction of iron Ill oxide in the midrex furnace, then treating the solid prode with diluted sulphuric acid. Compound (B): is a stable chloride salt of the most abundant metal of the Earth's crust So, to differentiate between compound (A) and compound (B) we use ............. a) sodium hydroxide b) dil. hydrochloric acid c) conc. sulphuric acid d) more than one is correct.

14-35 When a rod of zinc metal dipped in 1 molar solution copper II sulphate, all the following happen except. \( [\mathrm{Zn}=65, \mathrm{Cu}=63.5] \) zinc rod is kept electrically neutral \& also the solution is kept electrically neutral [ \( \left.\mathrm{SO}_{4}{ }^{2}\right] \) is kept constant in the solution the mass of rod is kept constant

ii. Metani nuk digjet në ajēr, neese nuk shkaktohet njé shkëndijë ose flakē. Pse? c) Kur 1 mol metani digjet në oksigjen, ndryshimi energjetik është - 890 kJ . i. Cfarē do të thotë shenja -? ii. Cila fjalë përshkruan një reaksion me këtē lloj