Pb(NO3)2 + 2KCl ------) PbCl2 + 2KNO3
Pb+2 + 2Cl- ---------) PbCl2
The answer is a, because the question is referring to partial pressures. Partial pressures are a mere sum, no halving or doubling of anything is necessary.
So, A
Hope this helped :)
Chemical or Nuclear. Probably, Chemical.
Answer:
The answer to your question is a) pure substance- compound
Explanation:
a) pure substance-compound. A pure substance can be an element or compound that is not mixed with another substance, glucose is a compound and also a pure substance.
b) mixture-heterogeneous. This option is wrong because glucose is not mixed with another substance.
c) pure substance-element. Glucose is a pure substance but it is a compound because it is composed of carbon, hydrogen, and oxygen. This option is incorrect.
d) mixture-homogeneous. Glucose is not a mixture, it is a pure substance. This option is wrong.
e) none of the above. This option is wrong because the first option is correct.
Molarity = number of moles/Volume (L). Solve for the number of moles in the initial solution (3.78M = n/0.3 L) and then use that amount of moles and the new volume (0.5 L) to solve for the new Molarity.