Answer:
B water exhibits weak adhesion and cohesion which allows capillary action to occur.
Explanation:
took the test
The correct answer is exactly 750 g.
Since the mass of board is 750 g, the mass of the pile of sawdust after the whole board is ground down is 750 g.
This is according to the Law of conservation of mass. According to this law, matter can neither be created nor destroyed by any physical transformations or chemical reactions. In any chemical reaction the mass of the products is equal to the mass of the reactants.
Here the board undergoes a physical transformations from being a whole board to a pile of sawdust. Thus according to the Law of conservation of mass, the mass of the whole board will be equal to the mass of a pile of sawdust.
<span>H2SO3 I DONT REALLY KNOW HOW TO EXPLAIN IT BUT HERE IS THE ANSWER
-BATMAN FOREVER!!!!
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<u>Answer:</u> The mass percent of silicon in the given compound is 15.9 %
<u>Explanation:</u>
We are given:
A chemical compound having chemical formula
To calculate the percent by mass of silicon in given compound, we use the equation:
Mass of silicon =
Mass of compound =
Putting values in above equation, we get:
Hence, the mass percent of silicon in the given compound is 15.9 %
3 X 6.02^23 = 1.81 x10^24 Br- <span>ions</span>