Asample of helium occupies a volume of 3.8 l at -45°c. what volume will it occupy at 45°c?
can you work it out ? !

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions