What is the difrense between soft water and hard water?

How do you find the number of valence electrons in an atom of a representative element?

If 3.64g of sand is separated from 5.25g of a mixture of salt and sand what is the percentage of sand in the sample

A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase, the company asks the manufacturer to provide data on a certain machine's efficiency.

Otis watches a cooking show on making mayonnaise. The chef dissolves salt and sugar in vinegar. She mixes in an egg yolk, and then mixes in oil until the ingredients are completely blended together.

A decimeter (dm) is one tenth of a meter. The diameter of Earth is 1.3 x 104 km. What is the diameter expressed in decimeters? 1.3 * 107 dm 1.3 * 1011 dm 1.3 * 108 dm 1.3 * 10-5 dm

How many molecules following formula 3Al2 (SO4) 3

Will mark branliest. Calculating percent yield: For the reaction Cu + 2AgNO3 → Cu (NO3) 2 + 2 Ag, adding 127 grams of copper to lots of silver nitrate yields 410 grams of silver. What is the percent yield of silver? I'm desperate.

Which of the following are considered strong bases? That is, they are capable of doing E2 reactions. (choose all that apply) Hydroxide, OH- Ammonia, NH3 Water, H20 ОMethanol, Снзон Methoxide, CH30- Cyanide, CN- Amide, NH2-

Describe an experiment to show that zinc is more reactive than copper

The lower the ignition temperature, better the fuel. True or false? Why?