Suggest why the ph of the gut secretions varies at different regions in gut answer key anatomy
Answers
Answer:
The correct answer is because they work at different pH levels.
Explanation:
The pH varies because the different enzymes secreted in the stomach work at different pH levels. Gastric secretion is the most important stage of digestion since when the food comes into contact with a low pH and the enzymes present, they dissociate it and denature the proteins present.
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Related Questions
What does newton's third law say about why momentum is conserved in collisions?A. Equal forces act in equal times, so the change in momentum for both objects must be equal. B. Unequal forces act in unequal times, so the change in momentum for both objects must be equal. C. Unequal forces act in unequal times, so the change in momentum for both objects must be unequal. D. Equal forces act in unequal times, so the change in momentum for both objects must be equal.
Which task most likely involves a calculation that uses moles?
The Solvay process is a multistep industrial process used to produce washing soda, Na2CO3(s). In the last step of the Solvay process, NaHCO3(s) is heated to 300°C, producing washing soda, water, and carbon dioxide. This reaction is represented by the balanced equation below.2NaHCO3(s) + heat ==> Na2CO3(s) + H2O(g) + CO2(g) Write the IUPAC name for washing soda.
Why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures?a. Saturated fatty acids have a larger mass. b. Saturated fatty acids contain many more bonds. c. Saturated fatty acids have single carbon-to-carbon bonds. d. Saturated fatty acids contain more carbon atoms.
B-C
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B-D
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A star is born, it radiates energy for a long time, toward the end it expands, it may or may not explode, and then it dies. It vary in sizes, masses and surface temperature range. The colors of stars reflect their surface temperature. Their relative brightness is expressed in a scale of six magnitudes. The brightest the stars are first-magnitude stars, while the dimmest are sixth-magnitude stars.
The lower the number, the brighter the star.
For example:
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white around 10 000 K
yellow around 7 000 K
Red around 5 000 K & lower
Answers
Answer:
16.27 g of CaCO3 are produced upon reaction of 45 g CaCN2 and 45 g of H2O.
Explanation:
Ca(CN)2 + 3H2O → CaCO3 + 2 NH3
First of all, let's find out the limiting reactant.
Molar mass Ca(CN)2.
Molar mass H2O: 18 g/m
Moles of Ca(CN)2: mass / molar mass
45 g / 92.08 g/m = 0.488 moles
Moles of H2O: mass / molar mass
45g / 18g/m = 2.50 moles
This is my rule of three
1 mol of Ca(CN)2 needs 3 moles of H2O
2.5 moles of Ca(CN)2 needs (2.5 . 3) / 1 = 7.5 moles
I need 7.5 moles of water, but I only have 0.488. Obviously water is the limiting reactant; now we can work on it.
3 moles of water __ makes __ 1 mol of CaCO3
0.488 moles of water __ makes ___ (0.488 . 1) / 3 = 0.163 moles
Molar mass CaCO3 = 100.08 g/m
Molar mass . moles = mass
100.08 g/m . 0.163 moles = 16.27 g
No, because they have different volumes.
Yes, because the number of moles is not dependent on the mass or the volume.
Yes, because the number of moles is only dependent on the mass per unit volume.
Answers
Answer: Yes, it is possible for each samples to contain 1 mole of a substance because the number of moles are not dependent on the mass or the volume.
Explanation:
The formula for the number of moles is given by:
As, the masses of 2 samples are different, so the number of moles will be dependent only on the molar masses of the samples.
Volume has no effect on the number of moles.
Different elements and compounds have different molar masses. E.g. a mole of hydrogen would be very different from a mole of gold
b. mg.
c. mm.
d. cm.
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Answer:
Explanation:
pom, add