Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other. (It doesn't.) Today, we know that the continents rest on massive slabs of rock called tectonic plates. The plates are always moving and interacting in a process called plate tectonics.
Answer:
204.8 K
Explanation:
We use the ideal gas equation:
PV = nRT
where R is the gas constant (0.082 L.atm/K.mol).
We have the following data:
n= 4 moles
P = 5.6 atm
V = 12 L
So, we introduce the data in the ideal gas equation to calculate the temperature (T):
T = PV/nR = (5.6 atm x 12 L)/(4 mol x 0.082 L.atm/K.mol) = 204.8 K ≅ -68 °C
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
Explanation:
Do you have a picture for the problem?
<u>We are given:</u>
Mass of the tablet = 2.7 grams
Number of moles of Ascorbic acid present in the tablet = 0.0109 moles
Molar mass of Ascorbic acid = 176.12 g/mol
<u>Mass of Ascorbic Acid present in the tablet:</u>
Mass of a given number of moles = number of moles * molar mass
<em>replacing the variables</em>
Mass = 0.0109 * 176.12
Mass = 1.92 grams <em>(approx)</em>
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<u>Mass percent of Ascorbic acid:</u>
Mass% = (
) * 100
<em>replacing the variables</em>
Mass% = (1.92 / 2.7) * 100
Mass% = 192 / 2.7
Mass% = 71.12 %
Therefore, the tablet has 71.12% Ascorbic Acid by mass
