A chemist divides a large sample of a mixture into three smaller portions. Each of these portions contains different ratios of the components substance that make up the mixture. Which description best fits the mixture ? A) compound

B) element

C) heterogeneous mixture

D) homogeneous mixture

E) pure substance

What is the number of moles in 15.0 g ash3?

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.

What is the oxidation state of an individual bromine atom in nabro3?