<span>11.6 g of lead sulfide.
First, get the molar masses of lead and sulfur
Lead = 207.2
Sulfur = 32.065
Now determine how many moles of each we have avaiable
lead = 10.0 g / 207.2 g/mol = 0.048262548 mol
sulfur = 1.6 g / 32.065 g/mol = 0.049898643 = mol
This tells me that the what's being produced is PbS instead of PbS2 and that there's a very slight excess of sulfur in the original reaction. So on the 2nd reaction with the same amount of lead and twice the amount of sulfur, there will be an even greater excess of sulfur and that you'll get 11.6 g of lead sulfide.</span>
The characteristic of atoms is
They are the smallest units of matter
<u><em> Explanation</em></u>
Atoms are the smallest constituent units of matter and they have properties of chemical elements.
Atoms can not be broken by any chemical means.
Atoms of an elements combine together to form compound.
In addition atoms consist nucleus of positively charged protons, neutral neutrons with negatively charged electrons.
Answer: 243 hours
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = initial amount of the reactant = 
a - x = amount left after decay process = 
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for reducing the mass to 10.00 % of its original mass
The time taken to reach 10.00 % of its original mass is 243 hours
I think the answer is C but I also feel it should be A...... but I think its C
Erosion by water and earthquakes
