The correct answer is carbon dioxide.
Carbon dioxide is contained of carbon and oxygen atoms which are chemically combined together. They cannot be separated by just using simple physical methods such as decantation or evaporation. They can only separate into carbon and oxygen using chemical method such as electrolysis. These are some properties of what compound has.
In opposite, salt water, is a mixture. It can easily be separated back into salt and water by using methods like evaporation or crystallization.
Salad is also a mixture, it is mixed of different food that are made from different molecules such as cabbage, sauce, apples etc.
And Potassium is an element. It cannot be further separated into anything simpler. It is not a compund.
So, the only correct answer here is carbon dioxide.
Answer:
Ce concentration = 0.0387 M
Explanation:
The given compound is: (NH₄)₂Ce(NO₃)₆
Mass = 10.6192 g
Mol. wt = 548.23 g/mol
Based on the formula stoichiometry:
1 mole of (NH₄)₂Ce(NO₃)₆ contains 1 mole of Ce
Therefore, there are 0.01937 moles of Ce in the given compound
Volume of the solution = 500.0 ml = 0.500 L
Answer:
Diamond can be set on fire.
Explanation:
It is made of carbon, therefore will be ignited.
<span>In a symmetrical tetrahedron, the four bond angles are equal to each other, with values of 109.5 degree. The H-C-H angles in CH4 and the O-Cl-0 angles in ClO4 will have values close to 109.5 degree</span>
Answer:
7.827s
Explanation:
Given that
Height of the Eiffel tower is (h) =300.5m
Acceleration due to gravity (g) =9.81m/s2
From the kinematic equations
s =ut+(1/2)gt2
It is free fall then u =0
Then h =(1/2)gt2
Then the time taken for the croissant dropped before it tagged you on the head. is t =Sqrt(2h/g) =Sqrt(2*300.5/9.81)=7.827s