50 kilograms whats the weight on earth and on the moon

A chemist measures the energy change ΔH during the following reaction: 2HgO (s) → 2Hg (l) + O2 (g), ΔH = 182.0 kJ Use the information to answer the following questions. (1) This reaction is: a. endothermic. b. exothermic. (2) Suppose 72.

You are researching whether life could have ever existed on Mars. What would be the best choice for scientifically reliable information?

Why does a reaction involving a catalyst finally stop

Which equation represents a single replacement reaction that can occur? A. 2 Cu + FeSO4 → Fe + Cu2SO4 B. Ag + KNO3 → K + AgNO3 C. l2 + MgCl2 → Cl2 + Mgl2 D. K + NaF → KF + 2 Na

What is the end result when the sulfur dioxide and nitrogen oxide produced by burning fossil fuels react with the atmospheric moisture?

Refer to the example about diatomic gases A and B in the text to do problems 19 - 27. For 3 moles AA, how many moles of BB will be required? __ How many moles of product will be made? __ mol answers should be 1, 2, or 3 for each blank

a drop of water weighing 0.48 g condenses on the surface of a 55-g block of aluminum that is initially at 25C.

I add 3.20 moles of Cu to an excess of AgNO3. How many miles of silver are formed?

Which phrase describes two forms of solid carbon, diamond and graphite, at STP? (1) the same crystal structure and the same properties (2) the same crystal structure and different properties (3) different crystal structures and the same properties

What would a 1:1 liquid binary mixture of Cyclohexane and Toluene look like? How would the molecules associate with one another?