Dilution is necessary for commercially available acids such as HNO3, H2SO4 etc so that the strength is increased so that students use it conveniently in a chemistry laboratory. Select one: O True O False

Br Bri 1 equiv. NaN3 DMSO

QUESTION 8 Br2 displaces F2 from a compound ○ True ○ False

C ?? D

6/3 Li ------> 4/2 He + _____________?

Cl₂ light, 20°C

Figure -۹ يفة H A یا اور ان کے C D :0; :2

Part D 36 um Express your answer to two significant figures. ? ΑΣφ

Which of the following alkenes is the most stable? O O The sauna premiu

Four research teams measured the density of a new alloy, and what each team wrote in its team notebook is shown in the table below. 3 Suppose a later and more reliable measurement gives 3.1 g/cm³ for the density of the same alloy. Decide which of the earlier measurements was the most accurate, and which was the most precise. team A B C D what was written in the notebook 3,₁₁ "2.1 g/cm³ "between 3.6g/cm³ and 4.6g/cm³ 3,₁₁ 3 3,₁₁ "2.9g/cm³ +1.0g/cm³ "1.1 g/cm³ ± 20.%" most precise most accurate measurement measurement OO X Ś