What volume of water is required to prepare 0.1 M H3PO4 from 100 ml of 0.5 M solution?

Fluorine (F) and bromine (Br) are in the same group on the periodic table. How do atoms of these elements compare when they form bonds? 1-Both a fluorine atom and a bromine atom lose one electron, and both atoms become stable.

The formation of a precipitate is an indication of a chemical change. a. True b. False

Which law relates to the ideal gas law? P1T1=P2T2 P1n1=P2n2 V1/n1=V2/n2 P1/V1=P2/V2

What are the two types of solids? Give examples of each

All of the following are true regarding alcoholic fermentation, except that alcoholic fermentation A. does not require oxygen. B. produces as much energy as cell respiration. C. produces ethanol. D. uses glycolysis.

Calcium (atomic number 20) has electron configuration 1s2,2s2,2p6,3s2,3p6,4s2. The atomic number of scandium is 21. Which orbital does the 21st electron enter? a. 3d b. 4p c. 4d d. 4f

In these solutions, identify the solute and the solvent Sea water, a solution composed of a variety of salts dissolved in water. The salt is the Soda water, a solution composed of carbon dioxide gas dissolved in water.

What is an Element and how it different from a Atom?

4 HCI + O2 - > 2 H2O + 2 CH2 How many moles of H2O can be produced from 30. moles of HCI?

How many molecules of nitrogen gas are in 22.4 L? A. 6.022 * 10^22 B. 6.022 * 10^23 C. 6.022 * 10^24 D. 6.022 * 10^25