Look at the graph of reaction rate versus substrate concentration for an enzyme. In which region does the reaction rate remain c
onstant?
1 answer:
Answer:
The correct answer is C.
Explanation:
The reaction speed remains constant in region C. This is because the growth rate decreases, tending to zero. Graphically you can see how the slope of the tangent line approaches the horizontal. The slope of the tangent line represents the rate of reaction speed. It is constant because although the concentration continues to increase, the reaction rate does not vary.
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Answer:
So we're trying to find the number of carbon moles in the compound. We know that we have 200g of the compound and that 40% of it is Carbon. and 40% of 200 is 80g (change 40% into a decimal and multiply it by 200 and you get 80g)
So 80g of the compound is carbon. In order to find the moles of Carbon, I have to divide the mass by the molar mass of the element.
We know from our periodic table that the molar mass for carbon is 12g/mol
<u>Therefore we have 6.67 moles of carbon in the compound</u>
Explanation:
Atomic number of nickel is 28 and its electronic distribution is 2, 8, 8, 2, 8. Therefore, in the inner/core electrons there are 18 electrons.
Atomic number of chromium is 24 and its electronic configuration is . Whereas atomic number of manganese is 25 and its electronic configuration is
.
Hence, the statement both chromium atom and the manganese atom have half-filled d sub-shells, is true.
Atomic number of Vanadium is 23 and its electronic configuration is . Atomic number of nickel is 28 and its electronic configuration is
.
So, there are three unpaired electrons in a Vanadium atom and in nickel atom there are 2 unpaired electrons.
Hence, the statement vanadium atom has fewer unpaired electrons than the nickel atom, is false.
Atomic number of titanium is 22 and its electronic configuration is . Atomic number of zinc is 30 and its electronic configuration is
.
There are no unpaired electrons in a zinc atom. Hence, the statement titanium atom has more unpaired electrons than the zinc atom, is true.
Atomic number of iron is 26 and its electronic configuration is . Since, 4s is the outermost shell so, in iron atom there are 2 valence electrons.
Hence, the statement iron atom has 8 valence electrons, is not true.
Thus, we can conclude that false statements below concerning period 4 transition elements are as follows.
- The vanadium atom has fewer unpaired electrons than the nickel atom.
- The iron atom has 8 valence electrons.
Answer:
Complete combustion of 0.1mol of monocarboxylic acid requires V litres of O2 at dtc. and the reaction produces 0.3mol of CO2 and 0.2mol of H2O.
What is the value of V?
Explanation:
The balanced chemical equation of the reaction is
1mol. of acid reacts with 1mol of and produce 2mol. of CO2 and 2mol. of H2O.
Given,
0.1mol of acid requires how many litres of oxygen at STP?
0.1mol of acid requires 0.1mol of oxygen.
Since, 1mol of oxygen at STP occupies 22.4L of volume.
Hence, the volume occupied by 0.1mol of oxygen is -- 2.24L
Answer is:
The value of V is 2.24L.