How many mg of a 31-mg sample of calciul 47 remains after 45 days

A solution of 3 moles of carbon disulfide in 10 moles of ethyl acetate has a vapor pressure of 170 torr at 28°c. the vapor pressure of pure carbon disulfide at 28°c is 390 torr. what is the vapor pressue of pure ethyl acetate at 28°c

A. Write an equation for determining the number of moles of NaOH that are added to the flask based on [NaOH] and volume of NaOH titrant (mL NaOH): B.

I'll be giving out brainliest to whoever chooses more than one! Which state of matter contains particles that move slightly in a fixed position? You can choose more than one! a. plasma b. liquid c. gas d. solid

Calculate the mole fraction of each gas in a mixture of 43.6 g Xe and 36.8 g Kr. show work

How many hydrogen atoms are in a cycloalkane with 6 carbon atoms?

What is a neutral atoms oxidation number

Suppose 30 grams of NaCl are placed in 900 mL of water. What is the molarity of this solution?

After a particularly cold day outside you go home to make some tea. you heat the water in the mug so that botch are about 75 degrees celcious. the tea bag is only 30 degrees celcious and the room is around 26 degrees celcious.

For main-group elements using the older numbering system the group number on the periodic table corresponds to which characteristic of the elements of that group

In the vertical columns of the periodic table, as the atomic numbers increase: a. the number of electron shells increases. b. the ionization energies increase. c. the number of electrons in the valence shell increases. d.