Answer:
I think finding the source of the fire would be the most difficult aspect seeing as though the fire would have burned any evidence
Explanation:
Answer:
An example of a phase is the final part of a multiple part landscaping project. An example of a phase is when you can the various shapes of the moon. An example of phase is a period of time during which you are a teenager when you fight with your parents all the time.
Explanation:
It has 7.22 moles.... mole =mass/molar mass
molar mass of H2O=18
130/18=mole
First we need to find the number of moles that 43.9g of gallium metal is. We can do this by finding the molar weight of gallium and cross-multiplying to cancel out units:

So we are dealing with 0.63 moles of gallium metal.
We can take from the balanced equation that 4 moles of gallium metal will react completely with 3 moles of oxygen gas. We can take this ratio and make a proportion to find the amount of oxygen gas, in moles, that will react completely with 0.63 moles of gallium metal:

Cross multiply and solve for x:


So now we know that 0.47 moles of oxygen gas will react with 43.9g of gallium metal.