Answer:
Mendeleev arranged the elements in order of increasing relative atomic mass . When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend .
Explanation:
<h2>Hope this helps!! Please consider marking brainliest! Have a good one!!</h2>
Answer:
MgCo3+Hcl—Mgcl+Co2+H2o
Explanation:
magnesium carbonated reacting with hydrochloric acid will yield magnesium chloride in addition with carbonIVoxide with water
The correct answer is option 1. It should be noted that a catalyst does not lower or decrease the activation energy because instead it provides an alternative route for the reaction to proceed. This speeds up a chemical reaction without being changed.
K = 0.058 yr (constant)
Fraction of the pesticide = 36 years/12 = 3 half-lives , so around 1/8 left
when 99.9 % decomposed, 0.1 % is left , so the fraction is 0.001. To reach this point, it will take around +/- 120 years
Answer:
Value of for the given reaction is 7.7
Explanation:
Where represents solubility product
For the given reaction, (concentration of pure solids remain constant during reaction. Hence their concentration is taken as 1 to exclude them from equilibrium constant expression)
So,
or,
Hence option (B) is correct