How many hydrogen atoms are there in 7.30 moles of ethanol

Which energy level has the least energy

As computer processor speeds increase, it is necessary for engineers to increase the number of circuit elements packed into a given area.

How many moles of nitrogen are in 2.0*10-2mole of quinine? Express your answer using two significant figures.

What does adding a neutron to an atom's nucleus do to the atom's mass? O A. It adds 1 more unit of mass to the atomic weight of the atom. B. A proton will be added with the neutron, increasing the weight by 2 mass units. C.

A salt is made by adding an excess of an insoluble metal oxide to an acid. How can the excess metal oxide be removed? * D filtration B crystallisation A chromatography C distillation

What are some observable indications that a chemical reaction has occurred?

Which of the following correctly represents the mole ratio between NaOH and FeCl3? 3 NaOH + FeCl3 → 3 NaCl + Fe (OH) 3 A. 1 mol NaOH: 1 mol FeCl3 B. 3 mol NaOH: 3 mol FeCl3 C. 1 mol NaOH: 3 mol FeCl3 D. 3 mol NaOH: 1 mol FeCl3

Is it possible for the overall charge of an ionic compound to be - 1. true false

Light is not a wave because it does not need a medium. t or f

Two liquids are known to be miscible. They are placed in a beaker and shaken. Which of the following describes what will happen? The liquids will eventually separate into two layers. The liquids form a solution.