Pb(OH)2 + 2 HCl = 2 H2O + PbCl2
Answer:
(1) the same chemical properties
.
Explanation:
Hello!
In this case, among the options:
(1) the same chemical properties
(2) the same volume
(3) different temperatures
(4) different empirical formulas
We can see that they have the same chemical properties as they at the same conditions, same type of bond (polar), molecular geometry, bond angle (104.5 °) and so on. Nevertheless, at STP (1 atm and 273.15 K) they do not have the same volume since the larger the mass, the larger the volume, they have the same temperature and the both of them are H₂O.
It means that the answer is (1) the same chemical properties
.
Best regards.
To separate some ethanol from water, Jane needs to use the method of simple distillation.
Simple distillation is a separation method in which two liquids can be separated from each other based on differences in boiling point.
Since water has a higher boiling point than ethanol, ethanol is collected first as the distillation proceeds.
Learn more: brainly.com/question/2193327
Answer:
Hello some parts of your question is missing
Two mixtures were prepared from three very narrow molar mass distribution polystyrene samples with molar masses of 10,000, 30,000 and 100,000 g mol−1 as indicated below: (a) Equal numbers of molecules of each sample (b) Equal masses of each sample (c) By mixing in the mass ratio 0.145:0.855 the two samples with molar masses of 10,000 and 100,000 g mol−1 For each of the mixtures, calculate the number-average and weight-average molar masses and comment upon the meaning of the values.
Answers:
a) 46.666.66 g/mol
b) 20930.23 g/mol
c)43333.33 g/mol
Explanation:
A)The equal number of molecules of each sample can be calculated using 
because for the number of molecules to be equal : n1 = n2 = n3 = n
Mn = 46666.66 g/mol
B ) To calculate the equal masses of each sample
we apply this equation
ATTACHED BELOW IS THE REMAINING PART OF THE SOLUTION
Answer:
that looks pretty and also well NGC 1427A has no general shape, so it is an irregular galaxy. U has a bulge in the center and arms, so it is a spiral galaxy. They are similar in the both certain plenty of dust and gas. Both also have active star-forming sites.
