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3 years ago

1.) When blood flow is gone from the extremities for too long, the cells start to die. Depending on the severity of the

Chemistry

1 answer:

valkas [14]3 years ago

5 0

Answer:

its A

Explanation:

because frostbite kills the nerves

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What is the relationship between the concentration of the hydronium and hydroxide ion and pH in any water solution?

frez [133]

Answer:

The concentration of hydronium ions and the pH value is related by the equation: pH=-Log[H+]

Explanation:

We have two different concepts pH and concentration of hydronium ions. Lets start with the hydronium ion.

An hydronium ion is a species that is produced by an acid:

$HA~->~H^+~+~A^-$

Aditionally, we can have the production of hydroxide ions. The subtances that have the capacity to produce this ions are called "bases":

$BOH~->~B^+~+~OH^-$

Now we can continue "pH"

The pH is a scale that indicates if the substance is and acid (higher concentration of $H^+$ ), neutral (equal amounts of $H+$ and $OH^-$ ) or basic (higher amount of $OH^-$ ).

Finally, the "pH" is calculated with the concentration of the hydronium ions (

$H^+$ ), the letter "p" is "-Log", therefore:

$pH=-Log[H^+]
$

I hope it helps!

4 0

3 years ago

. Consider the following reaction: CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g) A reaction mixture initially contains 0.50 M CH4 and 0.7

Soloha48 [4]

Answer:

0.0376

Explanation:

CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g)

start 0.5 0.75 0 0

change -0.11 -0.22 +0.11 +0.44

equilibrium 0.39 0.53 0.11 0.44

$K_{c}=\frac{products}{reactants} =\frac{[CS_{2}][H_{2}]^{4}}{[CH_{4}][H_{2}S]^{2}}=\frac{[0.11][0.44]^{4}}{[0.39][0.53]^{2}} =0.0376$

5 0

3 years ago

an experiment requires that each student use an 8.5 cm length of magnesium ribbon. how many students can do the experiment if th

skelet666 [1.2K]

I think about 67 students because if you divide 570 by the amount each person needs you get 67.0588235294 so you have to round down

4 0

3 years ago

How many moles of carbon are in 5.25 g sucrose? How many moles of hydrogen? How many moles of oxygen?

Airida [17]

Answer:

63 moles of carbon atoms, 115.5 moles of hydrogen atoms, and 57.75 moles of oxygen atoms i believe :)

6 0

3 years ago

Which ion is this atom most likely to form? Options: a. Na+ b. Na- c. Ne- d. Mg+

SVEN [57.7K]

Answer:

Explanation:

because na + has 11 electrons and has a higher chance to give away one then to gain 7 more. so the answer is a

6 0

4 years ago

Read 2 more answers