The answer to this question would be: 10132 mm= 33.2 ft
In this question, the density of mercury is 13.6 times of water which mean the mercury mass is also 13.6 times more than water. The pressure is directly influenced by mass, so the water height should be much higher than mercury. The calculation should be: 745mm * 13.6/1= 10132 mm= 33.2 ft
Answer: I italicize for checking
- <em>Rocks are preserved through the process.</em>
- <em>Rocks change from one type to another.</em>
- <em>Different rock groups are interrelated.</em>
- Rocks change from one type to another in a specific order.
- <em>Environmental conditions influence a change in rock type.</em>
Explanation:
Rocks are preserved, as in you can't destroy them completely, but no, they don't <em>stay </em>the same they change.
Answer:
9.72 × 10^20 molecules
<h3>
Explanation:</h3>
We are given;
- The mass of the compound C16H18N2O4S as 540 mg
- Molar mass of C16H18N2O4S = 334.4 g/mol
We are required to determine the number of molecules in 540 mg of penicillin.
- We know that 1 mole of a compound contains molecules equivalent to the Avogadro's number.
- That is, 1 mole of a compound = 6.022 × 10^23 molecules
- Therefore, 1 mole of C16H18N2O4S = 6.022 × 10^23 molecules
But, 1 mole = 334.4 g
Thus, 334.4 g of C16H18N2O4S contains 6.022 × 10^23 molecules
Mass of C16H18N2O4S = 540 mg or 0.54 g
Molecules in 0.54 g will be;
= (0.54 g ÷ 334.4 g) × 6.022 × 10^23 molecules
= 9.72 × 10^20 molecules
That looks like C8H13NO3 : Nitrocyclooctanone
To solve number 18 you have to add the positive and negative to equal zero. For example for 18a it would be K2S ( the 2 is a subscript ) because you need 2 positives to cancel out the 2 negatives.