Explain why organisms are more likely to be well preserved in mud than in sand

o-na [289]

Weight of sodium thiosulfate = 76.148 - 8.2

= 67.948 g.

Concentration of the solution = 67.948 / 172.7

= 0.393 g / mL. to the nearest thousandth . (answer).

3 0

3 years ago

Natasha2012 [34]

Answer: Oxidation reaction: $Al(s)\rightarrow Al^{3+}(aq)+3e^-$

Reduction reaction: $Sn^{2+}(aq)+2e^-\rightarrow Sn(s)$

Overall redox reaction : $2Al(s)+3Sn^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Sn(s)$

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

$Al(s)\rightarrow Al^{3+}(aq)+3e^-$

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

$Sn^{2+}(aq)+2e^-\rightarrow Sn(s)$

Overall redox reaction : $2Al(s)+3Sn^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Sn(s)$

5 0

3 years ago

kow [346]

Answer: D. The depth of the water does not affect the level at which a cargo ship floats.

3 0

3 years ago

velikii [3]

ºC = K - 273

ºC = 96 - 273

= -177ºC

answer A

hope this helps!

6 0

3 years ago

kupik [55]

Answer and Explanation:

(a) Phosphorus tribromide : The chemical formula for phosphorus tribromide is $PBr_3$

(b) Dintrogen tetrafluoride : The chemical formula for dinitrogen tetrafluoride is $F_4N_2$

(C) Xenon oxide : the chemical formula for xenon oxide is $XeO_4$

(D) Selenium trioxide ; the chemical formula for selenium trioxide is $SeO_3$

4 0

3 years ago