Controlled variable in an experiment is called

Why do need thermometer, thermistors and other devices for measuring temperature

James created a salt water solution by adding a scoop of the solute, salt, to a beaker of the solvent, water. After all the salt dissolves, James places the beaker of salt water on a hot plate and begins to heat the solution.

What is the systematic name of NH4ClO3

a 2.17 gm sample barium reacted completely with water what is the equation for the reaction how many milliliters of dry H2 evoled at 21degree celcius and 748mm of Hg? solution

Significant figures to scientific notation

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda