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3 years ago

8

Why do you think it is important that we have different types of nerve impulses

1 answer:

ludmilkaskok [199]3 years ago

7 0

I got this from google so dont report me
The speed of nerve impulses <span>varies enormously in </span>different types<span> of neuron. The fastest travel at about 250 ... For example, if </span>you <span>burn your fingers it is </span>important<span> that your brain gets the message to withdraw your hand very quickly. Back to top. Enlarge.
Also,
</span>There are two different kinds of nerve<span> fibres: fibres that carry information towards the cell body, called dendrites, and fibres that carry information away from it, called axons</span><span>.</span>

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How many particles would be found in a 1.224 g sample of K2O

lbvjy [14]

Answer:

9.96*10^21

Explanation:

Molar mass of K2O=29*2+16

= 74g per mol

number of moles in the sample= 1.224/ 74

=0.1654

Number of particles in 1 mole=6.0221409*10^23

Number of particles= 0.01654*6.0221409*10^23

=9.96*10^21

4 0

3 years ago

Read 2 more answers

What would be the composition and ph of an ideal buffer prepared from lactic acid (ch3chohco2h), where the hydrogen atom highlig

Mashutka [201]

Answer:

$P_H =2.86$

$c=1.4\times 10^{-4}$

Explanation:

first write the equilibrium equaion ,

$C_3H_6O_3$ ⇄ $C_3H_5O_3^{-} +H^{+}$

assuming degree of dissociation $\alpha$ =1/10;

and initial concentraion of $C_3H_6O_3$ =c;

At equlibrium ;

concentration of $C_3H_6O_3 = c-c\alpha$

$[C_3H_5O_3^{-} ]= c\alpha$

$[H^{+}] = c\alpha$

$K_a = \frac{c\alpha \times c\alpha}{c-c\alpha}$

$\alpha$ is very small so $1-\alpha$ can be neglected

and equation is;

$K_a = {c\alpha \times \alpha}$

$[H^{+}] = c\alpha$ = $\frac{K_a}{\alpha}$

$P_H =- log[H^{+} ]$

$P_H =-logK_a + log\alpha$

$K_a =1.38\times10^{-4}$

$\alpha = \frac{1}{10}$

$P_H= 3.86-1$

$P_H =2.86$

composiion ;

$c=\frac{1}{\alpha} \times [H^{+}]$

$[H^{+}] =antilog(-P_H)$

$[H^{+} ] =0.0014$

$c=0.0014\times \frac{1}{10}$

$c=1.4\times 10^{-4}$

6 0

3 years ago

Chemical bonding is the combining of atoms to form ______________?

svet-max [94.6K]

A i believe its atoms

4 0

3 years ago

Read 2 more answers

Scientists discovered that earths core has two parts by studying?

Tatiana [17]

Answer:

its not actually proven its just a hypothesis because they can't dig that deep because of the pressure

8 0

2 years ago

How much heat energy would be needed to raise the temperature of a 223 g sample of aluminum [(C=0.895 Jig Cy from 22.5°C to 55 0

dsp73

Answer : The heat energy needed would be, 6486.5125 J

Explanation :

To calculate the change in temperature, we use the equation:

$q=mc\Delta T\\\\q=mc(T_2-T_1)$

where,

q = heat needed = ?

m = mass of aluminum = 223 g

c = specific heat capacity of aluminum = $0.895J/g^oC$

$\Delta T$ = change in temperature

$T_1$ = initial temperature = $22.5^oC$

$T_2$ = final temperature = $55.0^oC$

Putting values in above equation, we get:

$q=223g\times 0.895J/g^oC\times (55.0-22.5)^oC$

$q=6486.5125J$

Therefore, the heat energy needed would be, 6486.5125 J

5 0

3 years ago