In a certain chemical reaction, 297g of zinc chloride was produced from a single replacement reaction of excess zinc and 202.7g of lithium chloride. What is the percent yield of zinc chloride?

How much heat, in kJ, is required to melt 54.0 g of ice at 0°C into water at 0°C if Hfus for water = 6.01?

Where does radioactivity come from? a the decay of certain atomic nuclei b the atom losing electrons c radioactive material d U-238

In a schools laboratory, students require 50.0 mL of 2.50 M H2SO4 for an experiment, but the only available stock solution of the acid has a concentration of 18.0 M. what volume of the stock solution would they use to make the required solution

What shape is the magnetic field produced when current is passed through a wire? a. Parabolic b. Elliptical c. Circular d. Bimodal

How many grams of nh3 can be produced from 2.86 mol of n2 and excess h2?

The number of neutrons in the nucleus of an atom can be calculated by 1. Adding together the numbers of electrons and protons 2. Subtracting the number of protons from the number of electrons 3.

Chemical or physical properties? titanium is less dense than water

Choose the element that would be the most reactive of the three. A. K c. Na b. Fr

Explain why iron structures need protection from corrosion while aluminium structures do not?

What is the charge associated with each side of the HI molecule? What is the percent ionic character of the H-I bond?