How

many moles are in 8.5 •10^25

Write a word equation for the extraction of tin from tin oxide using carbon

Using the Brønsted-Lowry concept of acids and bases, identify the Brønsted-Lowry acid and base in each of the following reactions: HSO3 - (aq) + H2O (l) →H2SO3 (aq) + OH - (aq) (CH3) 3N (g) + BCl3 (g) → (CH3) 3NBCl3 (s) Drag the appropriate items to

What are ribosomes made of?

Is a iron nail solid attracted to a magnet and soluble in water

Which pair below describes isotopes of the same element? A. an atom 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons B. an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons C.

Using the periodic table, determine the number of neutrons in a carbon.

Sailin Steve likes to test the buoyancy of different objects. He threw a spherical object into a fluid that has a greater density than the object does. He also threw a square object into the fluid that has a greater density than the fluid.

The sun is directly overhead at the equator on what day of the year? A. Zenith B. Solstice C. Equinox D. Ecliptic Isn't it the Solstice?

In the SI system of units, the mole is one of seven base units. It is frequently used in chemical calculations. However, a mole of something is just a particular quantity of it.

A student used a DCP solution (standardized to 9.98x10-4M) to analyze a sample of extract from 2.50g of solid food. The titration required 22.49mL of DCP. 87.00% of all the ascorbic acid in the food was collected in the extract.