What is an example of a strong base? HCl NaCl NaOH HF

Oksanka [162]

D. Cell membrane: surrounds a cell and allows substances to pass in and out

6 0

3 years ago

Ammonium nitrate, a common fertilizer, is used as an explosive in fireworks and by terrorists. It was the material used in the t

Sladkaya [172]

Explanation:

The given balanced reaction is as follows.

$2NH_{4}NO_{3} \rightarrow 2N_{2} + O_{2} + 4H_{2}O$

It is given that mass of ammonium nitrate is 86.0 kg.

As 1 kg = 1000 g. So, 86.0 kg = 86000 g.

Hence, moles of $NH_{4}NO_{3}$ present will be as follows.

Moles of $NH_{4}NO_{3}$ = $\frac{mass given}{\text{molar mass of NH_{4}NO_{3}}}$

= $\frac{86000 g}{80.043 g/mol}$

= 1074.42 mol

Therefore, moles of $N_{2}$ , $O_{2}$ and $H_{2}O$ produced by 1074.42 mole of $NH_{4}NO_{3}$ will be as follows.

Moles of $O_{2}$ = $\frac{1}{2} \times 1074.42 mol$

= 537.21 mol

Moles of $N_{2}$ = $\frac{2}{2} \times 1074.42 mol$

= 1074.42 mol

Moles of $H_{2}O$ = $\frac{4}{2} \times 1074.42 mol$

= 2148.84 mol

Therefore, total number of moles will be as follows.

537.21 mol + 1074.42 mol + 2148.84 mol

= 3760.47 mol

According to ideal gas equation, PV = nRT. Hence, calculate the volume as follows.

PV = nRT

1 atm \times V = 3760.47 mol \times 0.0821 L atm/mol K \times 580 K[/tex] (as $307^{o}C$ = 307 + 273 = 580 K)

V = 179066.06 L

Thus, we can conclude that total volume of the gas is 179066.06 L.

3 0

3 years ago

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree

victus00 [196]

Explanation:

The given data is as follows.

q = 69.0 kJ = 69000 J (as 1 kJ = 1000 J),

mass (m) = 8.10 kg = 8100 g (as 1 kg = 1000 g)

$T_{i} = 33.9^{o}C$ = (33.9 + 273) K = 306.9 K

C = 4.18 J/gK

As we know that the relation between heat and change in temperature is as follows.

q = $m \times C \times \Delta T$

Putting the values into the above formula to calculate the final temperature as follows.

q = $m \times C \times \Delta T$

69000 J = $8100 g \times 4.18 J/g K \times (T_{f} - 306.9 K)$

69000 J = $33858 \times (T_{f} - 306.9 K)$

$(T_{f} - 306.9 K)$ = 2.037 K

$T_{f}$ = (2.037 + 306.9) K

= 308.9 K

or, = 309 K (approx)

Thus, we can conclude that the new temperature of the water bath is 309 K.

5 0

3 years ago

What kind of melocule is water?A:nonpolarB:ionicC:polarD:charged

hram777 [196]

The correct answer is:  [C]:  "polar" .
_____________________________________________________
" Water " ; which is: " H₂O " ;
_____________________________________________________
is a:
_____________________________________________________

  — polar; → {eliminate: "Choice [A]: "non-polar"} ;

→ {and consider: "Choice: [C]: "polar" } ;

— covalent; → {not "ionic"; eliminate: "Choice: [B]: "ionic"} ;

— uncharged; → {neutral compound; not "charged" —but "balanced"} ;

→ {Note: " H ⁺ , O ²⁻ ; → " H₂O " } ;

→ The "charges" balance/ cancel out.

→ {eliminate: "Choice: [D]: "charged" .}.
_______________________________________________________
— compound.
_______________________________________________________

The correct answer is: [C]: "polar" .
_______________________________________________________

6 0

4 years ago

A company wants to put a fleet of low Earth satellites in orbit to create a worldwide telephone link. There is less of a time la

Marianna [84]

If your wanting to know less of the time:

70

250

8 0

3 years ago