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3 years ago

Which of the following structures is NOT found in the respiratory system?

Chemistry

2 answers:

tamaranim1 [39]3 years ago

8 0

The answer is esophagus

bonufazy [111]3 years ago

6 0

Esophagus I tell you it's the esophagus

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Use the solubility rules to determine if:

xenn [34]

Answer:

A reaction is said to occur if there is a formation of an insoluble solid or a precipitate(s) or a liquid (l) or a gas(g).

If both the reactants and products are in aqueous state, No reaction takes place.

$2 \mathrm{NaCl}(a q)+M g B r_{2}(a q)>M g C l_{2}(a q)+2 \mathrm{NaBr}(a q)(\mathrm{NO} \text { REACTION })$

All chlorides and Bromides are soluble except that of Ag, Hg and Pb.

Hence, No reaction takes place since all the reactants and products are in aqueous states.

${KOH}(a q)+{NaCl}(a q)>K C l(a q)+{NaOH}(a q)(\mathrm{NO} \text { REACTION })$

Salts of Group IA are soluble. Hence No reaction takes place

$M g S(a q)+2 {NaOH}(a q)>M g(O H)_{2}(s)+N a_{2} S(a q)$

(REACTION TAKES PLACE)

All hydroxides are insoluble except that of Group IA, ammonium ion and Group IIA down from Calcium.

Hence Reaction takes place with the formation of $Mg(OH)_2$ precipitate

5 0

3 years ago

What happens to the sound wave in echolocation?

Andrei [34K]

Answer: Reflected :)

5 0

3 years ago

we know from Newton’s 2nd Law of Motion that the force on an object is equal to the mass of the object times the acceleration of

ANTONII [103]

The acceleration of the ball was 0.6 m·s⁻².

F = ma

a = F/m = 5 N/9 kg × (1 kg·m·s⁻²/1 N) = 0.6 m·s⁻²

5 0

3 years ago

Is Chromium (Cr) a synthetic or natural element?

algol [13]

It's a natural element because it appears on earth

4 0

3 years ago

Write the empirical formula for at least four ionic compounds ca2+.v5+,f-,s2

Vesna [10]

Using these Elements. Here would be the 4 ionic compounds.

CaF2
VF5
CaS
V2S5

8 0

3 years ago