Explanation:When the stove turns on the skillet will become very hot because of the conduction of heat transferring from the stove to the skillet.
Unfortunately the data provided doesn't include the DENSITY of the ammonium chloride solution and molarity is defined as moles per volume. So without the density, the calculation of the molarity is impossible. But fortunately, there are tables available that do provide the required density and for a 20% solution by weight, the density of the solution is 1.057 g/ml.
So 1 liter of solution will mass 1057 grams and the mass of ammonium chloride will be 0.2 * 1057 g = 211.4 g. The number of moles will then be 211.4 g / 53.5 g/mol = 3.951401869 mol. Rounding to 3 significant digits gives a molarity of 3.95.
Now assuming that your teacher wants you to assume that the solution masses 1.00 g/ml, then the mass of ammonium chloride will only be 200g, and that is only (200/53.5) = 3.74 moles.
So in conclusion, the expected answer is 3.74 M, although the correct answer using missing information is 3.95 M.
To answer this question, you need to convert the 16.1 megabyte into second first. If the rate is 93kb/second, then the calculation would be:
16.1 mb x (1000kb/mb) / (93kb/second)= 173.12 second.
Then 16.1 mb music will last for 173.12 second. After that you can convert it into minutes: 173.12/ (60second/min)= 2.885 minutes.
Common steps include the following:
1. Identification of the problem or need.
2. Background search or literature review.
3. Analysis of results.
4. Communication of the findings.
Black holes cannot be seen, As they consume matter that strays too close, they squeeze it into a superheated disk of glowing gas.
