Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. the table shows marcus’s measured and calculated values. substance mass (g) volume (cm3) density (g/cm3) aluminum 5.7 2.1 2.7 copper 14.4 1.6 9.0 iron 9.5 1.2 7.9 titanium 8.6 1.8 4.8 next, marcus obtained another sample, which is made of one of the four substances that he had already measured. the table shows marcus’s measured values for this unknown sample. substance mass (g) volume (cm3) ? 9.5 2.1 what is the unknown sample made of?

During which time interval does the object travel approximately 10 meters

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f