Las hormonas pertenecen al grupo de los mensajeros químicos, que incluye también a los neurotransmisores y las feromonas. A veces es difícil clasificar a un mensajero químico como hormona o neurotransmisor.

Todos los organismos multicelulares producen hormonas, incluyendo las plantas (En este último caso se denominan fitohormonas).

Explanation:

8 0

3 years ago

How much 3M NaOH (MW=40) can be made from 10.0mL of a 10M solution?

vaieri [72.5K]

Explanation:

The given data is as follows.

$M_{1}$ = 3 M, $V_{1}$ = ?

$M_{2}$ = 10 M, $V_{2}$ = 10.0 ml

Therefore, calculate the volume of given solution as follows.

$M_{1} \times V_{1}$ = $M_{2} \times V_{2}$

Now, putting the given values into the above formula as follows.

$M_{1} \times V_{1}$ = $M_{2} \times V_{2}$

$3 M \times V_{1}$ = $10 M \times 10.0 ml$

$V_{1}$ = 33.3 ml

or, = 0.033 L (as 1 ml = 0.001 L)

Since, molarity of NaOH is given as 3 M and its volume is calculated as 33.3 ml.

Molarity = $\frac{\text{mass of solute}}{\text{molar mass of solute}} \times \frac{1}{\text{volume in L}}$

3 M = $\frac{mass}{40 g/mol \times 0.033 L}$

mass = 3.96 g

Therefore, we can conclude that mass of NaOH is 3.96 g.

8 0

3 years ago

SOMETHING I DONT UNDERSTAND! My sis told me she was on her perio d but then I told her there was this thing called subject and p

shusha [124]

Answer:

yep life tends to not make sense

i feel you gurl i also have a older sister

Explanation:

8 0

2 years ago