True or false anaerobic transmission is when you touch a contaminated surface

NISA [10]

what is the formula of gravity ?

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<h3> GRAVITY</h3>

Newton's law of universal gravitation

$\qquad \qquad \qquad \qquad \: F = G \frac{m1 \: m2}{r²}$

F = FORCE

G=GRAVITATIONAL CONSTANT

M1 = MASS OF OBJECT 1

M2=MASS OF OBJECT 2

R = DISTANCE BETWEEN CENTERS OF THE MASSES

From the web.

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8 0

2 years ago

Read 2 more answers

Which careers rely heavily on hard skills?

ale4655 [162]

Any temp agencies or factory work

6 0

4 years ago

You mix 2 moles of hbr with 3 moles of koh in enough water to make 1 l of solution. What is the ph of your final solution?.

siniylev [52]

Taking into account the definition of pH and pOH, limiting reagent and reaction stoichiometry, the pH of the final solution is 14.

<h3>Limiting reagent and excess of moles.</h3>

Hydrobromic acid and potassium hydroxide react in a 1:1 mole ratio to produce aqueous potassium bromide and water, following the reaction:

HBr + KOH → KBr + H₂O

So, if you mix equal numbers of moles of each reactant, both the acid and the base will be completely consumed.

But in this case you mix 2 moles of HBr with 3 moles of KOH.

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

In this case, as the reaction has a 1:1 mole ratio hydrobromic acid will act as the limiting reagent, and it will be completely consumed before all the moles of potassium bromide are consumed, so there will be an excess of moles of potassium bromide.

After the reaction is complete, the resulting solution will contain an excess of moles of potassium bromide calculated as, considering that when 2 moles of hydrobromic acid are consumed, 2 moles of potassium hydroxide are consumed:

3 moles that you had at the beginning of the reaction - 2 moles that react= 1 mole of potassium bromide

<h3>Definition of molarity</h3>

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity= \frac{number of moles}{volume}$