Answer: D. Sublimation
Explanation: I just took the test.
A simply because of I'm a pretty good guesser, Hope this helps.
Answer:
1,2 and 4 are correct
Explanation:
Enzymes that show cooperativity are defined as Allosteric enzymes. This cooperativity is of several types.
1) homotropic/homoallestery - positive cooperation
2) heterotropic/heteroallestery - negative cooperation
Activity of allosteric enzymes is regulated by other molecules (effector molecules)
Hence, statement 1 and 2 are correct.
Binding curve of allosteric enzymes:
For cooperative binding, binding curve is Sigmoidal curve
For non cooperative binding, binding curve is Hyperboilc curve.
Hence, statement 3 is wrong.
Allosteric enzymes have multiple active sites.
Allosteric enzymes are often multi sub unit proteins.
Hence, statement 4 is correct.
Answer:
Mass = 240 g
Explanation:
Given data:
Number of molecules of NaOH = 3.618 × 10²⁴ molecules
Mass in grams = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
For NaOH:
1 mole = 6.022 × 10²³ molecules
3.618 × 10²⁴ molecules × 1 mol / 6.022 × 10²³ molecules
0.6 × 10¹ moles
6 moles
Mass of NaOH:
Mass = Number of moles × molar mass
Mass = 6 mol × 40 g/mol
Mass = 240 g
Answer:
Partial pressure of Ne is 0.61 atm.
Explanation:
Mole fraction of a gas 
in mixture = (no. of moles of the gas in mixture)/(total no. of moles of gases in mixture)
Here, total no. of moles of gases = (0.32 + 0.56) moles = 0.88 moles
So, mole fraction of Ne in mixture, 
Let's assume both He and Ne along with their mixture behaves ideally,
Hence, in accordance with Dalton's law of partial pressure-
Where, 
and 
are partial pressure of Ne and total pressure respectively.
So, 
So, partial pressure of Ne is 0.61 atm.
