What is two methods scientists use to obtain Advanced evidence

If you are sure that a sample of material is aluminum but have no measuring instruments AND are not allowed to handle the sample, how would you determine the sample's density?

If you have 23.45 g of NaCl and react it with 56.23 g of Li2 (SO4) How many grams of each product can be made?

Which type of energy transfer occurs when water is heated on a stove

According to Kirchhoff's third law, when light from a blackbody having a continuous spectrum passes through a cool transparent gas, are observed in the continuous spectrum

How does the polar jet stream influence the weather on the southern tip of soth america?

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol