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4 years ago

Both the brain and the spinal cord are protected by _____.

Chemistry

2 answers:

patriot [66]4 years ago

6 0

It is a watery fluid called <span>cerebrospinal fluid. Answer C :)
</span>

nikklg [1K]4 years ago

4 0

Hello,

Both the brain and the spinal cord are protected by _____.
C.a watery fluid

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What is the kb of the base po−34 given that a 0. 48m solution of the base has a ph of 12. 70? the equation described by the kb v

podryga [215]

The equation described by the kb value is 5.21 x $10^-^3$ .

The potential of Hydrogen is what pH is formally known as. The negative logarithm of the concentration of H+ ions is known as pH. Thus, the definition of pH as the amount of hydrogen is provided. The hydrogen ion concentration in a solution is described by the pH scale, which also serves as a gauge for the solution's acidity or basicity.

Assuming PO₄³⁻ (the phosphate anion).

PO₄³- + H₂O ==> HPO₄²⁻ + OH⁻

Kb = [HPO₄²⁻][OH⁻] / [PO₄³⁻]

We can find the [OH⁻] from the pH of 12.70.

pH + pOH = 14

14.0 - 12.7 = 1.3 = pOH

[OH] = 1x $10^-^1^.^3$

[OH-] = 5.0x $10^-^2$ M

[HPO₄²⁻] = 5.0x $10^-^2$ M

Kb = (5.0x $10^-^2$ )2 / 0.48

= 2.5x $10^-^3$ / 0.48

Kb = 5.21 x $10^-^3$

Learn more about pH here:

brainly.com/question/8758541

#SPJ4

3 0

1 year ago

Power plants release sulfur dioxide and nitrogen oxides into the atmosphere where they combine with water vapor to form _____.

Ad libitum [116K]

<em>Answer:</em>

The correct option is acid precipitation

<em>Explanation:</em>

When sulfur dioxide react with water vapors, they form sulphuric acid.
Similarly, when NOx reacts with water vapors to form HNO2 and HNO3.
So these acid cause the rain water into acidic rain.

4 0

4 years ago

Read 2 more answers

Calculate Delta G for each reaction using Delta Gf values: answer kJ ...thank you

Leni [432]

Answer:

a) $\Delta G=2.6kJ$

b) $\Delta G=-979.57kJ$

c) $\Delta G=264.21kJ$

Explanation:

Hello,

In this case, in each reaction we must subtract the Gibbs free energy of formation the reactants to the Gibbs free energy of formation of the products considering each species stoichiometric coefficients. In such a way, the Gibbs free energy of formations are:

$\Delta _fG_{H_2}=\Delta _fG_{I_2}=0kJ/mol\\\Delta _fG_{HI}=1.3kJ/mol\\\Delta _fG_{CO_2}=-394.4kJ/mol\\\Delta _fG_{CO}=-137.3 kJ/mol\\\Delta _fG_{NH_3}=16.7 kJ/mol\\\Delta _fG_{HCl}=-95.3kJ/mol\\\Delta _fG_{MnO_2}=465.37kJ/mol\\\Delta _fG_{Mn}=0kJ/mol\\\Delta _fG_{NH_4Cl}=-342.81kJ/mol$