Answer:
C, physical change
Explanation:
take a look at the equation. Next to each form of water do you see the little (g) and (l)? These represent the state of matter the water is in. So, the water is going from a gas to a liquid. The chemical compound is the same so its a physical change, not chemical, and it is reversible. You could change the liquid water back to the gas through evaporation. Endothermic has literally nothing to do with this equation so you can easily eliminate that answer choice.
Answer:
Easy.. 6 valence electrons
Answer: The percent yield of zinc carbonate is 5.91 %
Explanation:
To calculate the moles :
is the limiting reagent as it limits the formation of product and is the excess reagent.
According to stoichiometry :
1 mole of produce = 1 mole of
Thus 1.7 moles of will produce= of
Theoretical yield of
percentage yield =
So you can predict the damage it will cause and put plans in place to reduce the damage. Also to see what areas you need to evacuate
Answer:
Listen in Class. The first step to passing any test is to begin preparing right there in the classroom. ...
Review Lab and Lecture Notes. ...
Know the Vocabulary. ...
Develop a Study Schedule. ...
Take Advantage of Online Study Resources.
Explanation: