3 years ago

What is the product of ( 2.324 cm x 1.11 cm) expressed to the correct number of significant figures?

Chemistry

1 answer:

loris [4]3 years ago

8 0

Answer:

2.580

Explanation:

There are 4 significant figures in the most precise number, therefore you round 2.57964 to 2.580 to get the correct amount of significant figures.

You might be interested in

Sodium (Na) A Homogeneous Mixture B Element C Compound D Heterogeneous Mixture

laiz [17]

Sodium is categorized as a B. Element.

3 0

3 years ago

⦁ Find the concentration of H+, OH-, PH and POH of 0.03 M of magnesium hydroxide which ionizes to the extent of only 1 /3 in aqu

lions [1.4K]

Answer:

$pH=12.3\\\\pOH=1.7\\$

$[H^+]=5x10^{-13}M$

$[OH^-]=0.02M$

Explanation:

Hello there!

In this case, according to the given ionization of magnesium hydroxide, it is possible for us to set up the following reaction:

$Mg(OH)_2(s)\rightleftharpoons Mg^{2+}(aq)+2OH^-(aq)$

Thus, since the ionization occurs at an extent of 1/3, we can set up the following relationship:

$\frac{1}{3} =\frac{x}{[Mg(OH)_2]}$

Thus, x for this problem is:

$x=\frac{[Mg(OH)_2]}{3}=\frac{0.03M}{3}\\\\x= 0.01M$

Now, according to an ICE table, we have that:

$[OH^-]=2x=2*0.01M=0.02M$

Therefore, we can calculate the H^+, pH and pOH now:

$[H^+]=\frac{1x10^{-14}}{0.02}=5x10^{-13}M$

$pH=-log(5x10^{-13})=12.3\\\\pOH=14-pH=14-12.3=1.7$

Best regards!

4 0

3 years ago

10. Given the reaction:

andrey2020 [161]

Answer:

B hope help you stay happy

5 0

3 years ago

An acid has an acid dissociation constant of 2.8 10–9. What is the base dissociation constant of its conjugate base?

Neporo4naja [7]

The answer is 3.6 x 10^-6

6 0

3 years ago

Read 2 more answers

Which process produces the energy that is used by solar panels?

Montano1993 [528]

A. Combustion since it can’t be nuclear….?

8 0

2 years ago

Read 2 more answers