2*3.52*17
=<span>119.68 grams</span>
Answer:
table A
Explanation:
its table A because it requires less force push. the less force used the less friction there is.
the less friction there is the more smooth a surface is.
For this problem, the solution is exhibiting some colligative properties since the solute in the solution interferes with some of the properties of the solvent. We use equation for the boiling point elevation for this problem. We do as follows:
<span>
ΔT(boiling point) = (Kb)mi
</span>ΔT(boiling point) = (0.512)(1.3/2.0)(2)
ΔT(boiling point) = 0.67 degrees Celsius
<span>
T(boiling point) = 100 + 0.67 = 100.67 degrees Celsius</span>
The soap cannot be expected as a good rust remover, as it lacks the presence of strong acids, or petroleum products, to dissolve the rust.
<h3>What is rusting?</h3>
Rusting is the process of the formation of iron compounds with the reaction of iron with oxygen and water.
The rust can be removed with the acid and petroleum products, as their reaction dissolves the oxygen compounds.
The soap alone cannot be considered a good rust remover, as it lacks the presence of strong acids or petroleum products to dissolve the rust.
Learn more about rusting, here:
brainly.com/question/688285
Answer: Uranium-235.
Radioactive isotopes are used to determine the age of antique objects, including fossils.
The half-life time of the radioactive elements is what permits the process of dating.
The half-life of C-14 is too short to be useful to date too old objects.
Precambrian time is the most antique era. C-14 hal-life is about 5730 years and Precambrian time is millions or billions of years ago. Given that the hal-life of U-235 is 704 million years it is appropiate to date the fossils from the Precambrian era.
