Because membrane receptors interact with both extracellular signals and molecules within the cell, they permit signaling molecules to affect cell function without actually entering the cell.
Answer:
110.25grams
Explanation:
The balanced chemical equation is as follows:
H2SO4 + 2NaOH → Na2SO4 + 2H20
Based on the balanced chemical equation of the reaction given above, 1 mole of sulphuric acid (H2SO4) is required to react with 2 moles of sodium hydroxide (NaOH).
Hence, if 1 mol of H2SO4 is needed to react with 2 moles of NaOH
Then, 2.25mol of NaOH will be required to react with;
= 2.25/2
= 1.125mol of H2SO4
Using the formula, mole = mass/molar mass, we can convert the molar value of H2SO4 to its mass value.
Molar mass of H2SO4 = 1(2) + 32 + 16(4)
= 2 + 32 + 64
= 34 + 64
= 98g/mol
Therefore, mole = mass/molar mass
1.125 = mass/98
mass = 98 × 1.125
mass = 110.25grams of H2SO4
Answer:
A plasma.
Step-by-step explanation:
A <em>plasma i</em>s a hot, ionized gas in which the atoms have lost one or more of their electrons.
Thus, the plasma consists gaseous ions as well as the electrons that were stripped from them.
The Sun's high temperatures strip the electrons from its hydrogen and helium atoms, so the Sun is essentially a giant ball of plasma.
Answer : The order of the reaction with respect to water is, zero.
Explanation :
Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.
The given chemical reaction is:
The general rate law expression for the reaction is:
![\text{Rate}=k[(CH_3)_3CCl]^a[H_2O]^b](https://tex.z-dn.net/?f=%5Ctext%7BRate%7D%3Dk%5B%28CH_3%29_3CCl%5D%5Ea%5BH_2O%5D%5Eb)
..........(1)
where,
a = order with respect to 
b = order with respect to 
R = rate law
k = rate constant
As we are given that:
![\text{Rate}=k[(CH_3)_3CCl]](https://tex.z-dn.net/?f=%5Ctext%7BRate%7D%3Dk%5B%28CH_3%29_3CCl%5D)
...........(2)
By comparing equation 1 and 2, we get:
a = 1 and b = 0
That means, the rate is depending only on the concentration of tert-butyl chloride.
Hence, the order of the reaction with respect to water is, zero.
