The answer is; B
The tip of the blue triangles points to the direction in which the cold front is moving. Also, note that the blue color represents a cold front (as opposed to a red color that represents warm front). A cold front occurs when a cooler air mass wedges down and replaces, at ground level, the rising warm air mass. The boundary between the two air masses exhibits cooling moisture that forms clouds and thunderstorms.
<span>If there are 15 mL in 1 tablespoon, then 3 tablespoons should have triple the volume as originally stated.
Note in all of the four choices, the units simplify to mL because tbsp x ml/tbsp = mL (tbsp/tbsp = 1)
The second and third choice give ultimately the same, incorrect value. The fourth option gives an incorrect fraction - there are not 15 mL for every tablespoon. The correct answer is 1 tbsp x 15mL/3tbsp</span>
The balanced reaction is:
<span>4Cr(s)+3O2 (g )= Cr2O3 (s)
Since we are not given the amount of any of the reactants, we assume we have one gram of chromium. Calculations are as follows:
1 g Cr ( 1 mol Cr / 52 g Cr ) ( 1 mol Cr2O3 / 4 mol Cr ) = <span>0.005 mol Cr2O3
</span></span>0.005 mol Cr2O3 (151.99 g Cr2O3 / 1 mol Cr2O3 ) = 0.7307 g <span>Cr2O3
</span>
Therefore, the theoretical yield for 1 gram of Cr is 0.005 mol Cr2O3 or 0.7307 g Cr2O3.
Answer:16g
Explanation:A solution's percent concentration by mass,
% w/w
, basically tells you what mass of solute you get per
100 g
of solution.
Photosynthesis converts solar energy into chemical energy title
