How many hydroxide ions are in 2.5 mol Mg(OH)2??

1 answer:

5 0

We can see from the chemical formula of magnesium hydroxide that each mole contains 2 moles of OH ions. So the molar ratio of magnesium hydroxide to hydroxide ions becomes 1 : 2.
If there are 2.5 moles magnesium hydroxide present, the moles of hydroxide ions will be:
2.5 * 2 = 5 moles of hydroxide ions

Each mole of a substance contains 6.02 x 10²³ particles. Thus, the total number of ions will be:
5 x 6.02 x 10²³
= 3.01 x 10²⁴ hydroxide ions

You might be interested in

As a pendulum swings from its highest to its lowest position along an arc, what happens to its kinetic energy and potential ener

lara31 [8.8K]

Explanation:

As a pendulum swings from its highest to its lowest position along an arc, what happens to its kinetic energy and potential energy? The potential energy decreases while the kinetic energy increases.

4 0

2 years ago

Complete combustion of 5.90 g of a hydrocarbon produced 19.2 g of CO2 and 5.89 g of H2O. What is the empirical formula for the h

scZoUnD [109]

$44g \ CO_{2} \ \ \ \rightarrow \ \ 12g \ C\\
19,2g \ CO_{2} \rightarrow \ \ \ x\\\\
x=\frac{19,2g*12g}{44g}\approx5,24g \ \ \ \Rightarrow \ \ n=\frac{5,24g}{12\frac{g}{mol}}\approx0,44mol\\\\\\
18g \ H_{2}O \ \ \ \rightarrow \ \ \ 2g \ H\\
5,89g \ H_{2}O \ \rightarrow \ \ y\\\\
y=\frac{5,89g*2g}{18g}\approx0,65g \ \ \ \ \Rightarrow \ \ n=\frac{0,65g}{1\frac{g}{mol}}=0,65mol\\\\\\
n_{C}:n_{H}=0,44:0,65\approx1:1\\\\
CH$

4 0

2 years ago

I MARK AS BRAINLIEST IF YOU ANSWER QUICK!

Sedaia [141]

Answer:

Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. A sensor aboard NASA's Terra satellite is now collecting detailed measurements of how much sunlight the earth's surface reflects back up into the atmosphere.

Explanation:

hope this helps :)

5 0

2 years ago

What changes happens when you run ?

tekilochka [14]

Answer:

more detail please

Explanation:

6 0

2 years ago

Read 2 more answers

A given hydrocarbon is converted completely to carbon dioxide and water, and equal numbers of moles of co2 and h2o are produced.

Sauron [17]

X moles of CO₂, and x moles of H₂O

CxH2x + 3x/2 O₂ -------> xCO₂ + xH₂O

CxH2x or CnH2n ----> ALKENE ( hydrocarbon with double bond)

4 0

3 years ago