Why is the study of crime difficult?

A mixture of argon and neon has a measured gas density of 1.66 g / L at STP. Assuming ideal‑gas behavior, what is the average molar mass of the mixture?

which statement accurately describes the charge of the nucleus of an atom? - the nucleus can be either positively charged or neutral. - the nucleus never has an electrical charge. - the nucleus always has a positive charge.

Describe an experiment to show that fake gold conducts electricity. State what apparatus you would need, what you would do and what you would see.

A student sets up a reaction and calculates a possible yield of 55.9 grams of silver. If the student performs the reaction and the mass of actual silver obtained is 42.5 grams, what is the percent yield?

The molar mass of Cu is 63.5 g/mol. The molar mass of Ag is 107.9 g/mol. What mass, in grams, of Ag is produced from reaction of 31.75 g of Cu?

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