Which of the following enzymes would digest a fat? A) sucrose B) lipase C) amylase D) protease
Answers
AmyLase digests starches, and protease digests Proteins!
Related Questions
What stays the same when’s solution is diluted by adding more solvent
Which process melts an ore to separate useful metals from the rest of the elements in the ore? smelting, mining, prospecting, alloys
A gas of 190 mL at a pressure of 74 atm can be expected to change its pressure when its volume changes to 30.0 mL. Express its new pressure in units of atmospheres.
Nitrogen gas consists of _____. two separate nitrogen atoms a diatomic nitrogen atom a molecule of two nitrogen atoms a compound of nitrogen atoms
Explain how each item is used in the procedure
List any safety equipment needed and how it is used in the procedure
Describe how this procedure might be used in a situation outside the chemistry classroom
Answers
It's a mixture of a solution and an insoluble solid, so the easiest way to go is through filtration. (Also, I'm assuming the barium is cut into very small chips.)
In a line, simply filter the solution using a folded filter paper in a funnel, collect the residue in a beaker or flask, rinse it with distilled water and let it dry. (Or simply filtering it could be enough, depending on how far your teacher wants you to go.)
Stuff needed:
>filter paper (for separating the solid from the solution)
>funnel (to hold the filter paper)
>beaker or flask (to hold the filtrate)
>distilled water (to rinse the solid)
>spatula (to scoop up the solid)
Procedure:
>Fold filter paper and line the funnel with it. Place the funnel in the flask or beaker.
>Pour solution in. Then add water (I think using tap water might be fine in this case, but you can use distilled water if you'd like) to wash out the container with the solution of any solid you may have not gotten in the first try. Alternatively, you could use a spatula to spoon it onto the filter paper.
>Once everything has been filtered, pour some distilled water on the residue on the filter paper to wash away the solution.
>Take out the filter paper, open it up and let it dry.
This can be used in real life in many occasions. For example, when you make tea, you need to filter the leaves out. Or when you cook the pasta, you put it in a sieve to separate the pasta from the water. Or when you fish using fishing nets, you "filter" the fish from the water.
Answers
Reaction 1: S(s) + O₂(g) → SO₂(g) ΔrH₁ = -296.8 kJ/mol.
Reaction 2: H₂(g) + ½ O₂(g) → H₂O(l) ΔrH₂ = -285.8 kJ/mol.
Reaction 3: H₂(g) + S(s) → H₂S(g) ∆rH₃ = -20.6 kJ/mol.
Reaction 4: 2H₂S(g) + 3O₂(g) → 2H₂O(l) + 2SO₂(g) ΔrH₄ = ?
Using Hess's law reaction number 4 is sum of reaction number 1 multiply with two, reaction number 2 multiply with two and reaction 3 reversed and multiply with two:
ΔrH₄ = 2 · (-296.8 kJ/mol) + 2 · (-285.8 kJ/mol) + 2 · 20.6 kJ/mol.
ΔrH₄ = -1124 kJ/mol.
b)it involves heating charcoal to high tempuratures
c)it involves drawing copper into long wires
d)it involves breaking molecular bonds between copper compounds
Answers
The correct answer is D:
it involves breaking molecular bonds between copper compounds .
The explanation :
-when we melt a copper it is a physical change because the substance is still copper and have the same shape.
- but for example Burning a copper it is a chemical change. Fire activates a chemical reaction between copper and oxygen.
-The oxygen in the air reacts with the copper and the chemical bonds are broken.
- the chemical change is changing the other compound bonded to the copper atoms.
So, the correct answer is D
Answers
NH₃ = 17.0 g/mol
14 g N₂ ---------------> 2 x 17 g NH₃
6.62 x 10⁻⁴ g --------> ?
Mass NH₃ = ( 6.62 x 10⁻⁴ ) x 2 x 17 / 14
Mass NH₃ = 0.022508 / 14
Mass NH₃ = 0.00160 g
number of moles = 0.00160 / 17 = 9.41 x 10⁻⁵ moles
1 mole ----------------------- 6.02 x 10²³ molecules
9.41 x 10⁻⁵ moles ---------- ?
molecules NH₃ = ( 9.41 x 10⁻⁵ ) x ( 6.02 x 10²³ ) / 1
= 5.66 x 10¹⁹ molecules of NH₃
hope this helps!
Answers
Answer:
Distillation
Explanation:
In order to turn seawater into freshwater you have to remove the dissolved salt in seawater. That may seem as easy as just boiling some seawater in a pan, capturing the steam and condensing it back into water (distillation).
calcium-40
molybdenum-98
mercury-194
Answers
The "mercury-194" is a kind of isotope which is untastable and radioactive.
What is isotope?
Isotopes may be members of the very same element's family but also have variable counts of neutrons despite roughly the identical count of protons.
What is radioactive?
An unstable nucleus of an atom releases energy through radiation in a process known as radioactive decay.
Therefore, the "mercury-194" is a kind of isotope which is untastable and radioactive.
To know more about isotope and radioactive
#SPJ2
Answer: Mercury-194 is an unstable isotope and hence is radioactive.
Explanation: Mercury-194 is an isotope of mercury, having formula
Number of protons in this isotope = 80
Number of neutrons in this isotope = 114
This isotope is radioactive in nature and under decay process by Electron Capture.
Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.
Reaction for electron capture of mercury-194 follows: