Question 2 (1 point) A group of students all measured the density of a liquid and got the following answers. • Student 1: 3.6g/mL Student 2: 2.3 g/ml • Student 3: 2.8 g/ml What is the average density for all the data points? no 3.0 g/ml 2.9 g/ml 8.7 g/ml 2.5 g/ml € I just wanna know only what the answer is

Which metal exist in liquid state and can be cut with knife ?

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?