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3 years ago

Aluminum boils at 2467°C. Aluminum’s boiling point in Kelvin is 2194. True or False.

Chemistry

2 answers:

Sergeeva-Olga [200]3 years ago

6 0

Answer:

The given statement is false.

Explanation:

Given that aluminum boils at 2,467°C

Boiling point of aluminum in kelvins is 2,194 K

Temperature in degree Celsius can be converted into Kelvins by relation:

$(T)^oC=273 +(T) K$

So, boiling point of aluminium in Kelvins will be:

$2,467 ^oC=273 +(2,467) K=2,740 K$

2,740 K ≠ 2,194 K

But the given value in Kelvins is not coming equal to our calculated value, Hence, the given statement is false.

IceJOKER [234]3 years ago

3 0

False. To get Kelvin add 273 to <span>°C to get your temperature into Kelvin. The correct boiling point of Aluminum in Kelvin is 2740 K.</span>

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Hydrogen gas was collected by water displacement. what was pressure of the h2 collected if the temperature was 26°c?

Vedmedyk [2.9K]

The ideal gas law may be written as
$p= \frac{\rho R T}{M}$
where
p = pressure
ρ =density
T = temperature
M = molar mass
R = 8.314 J/(mol-K)

For the given problem,
ρ = 0.09 g/L = 0.09 kg/m³
T = 26°C = 26+273 K = 299 K
M = 1.008 g/mol = 1.008 x 10⁻³ kg/mol

Therefore
$p= \frac{(0.09 \, kg/m^{3})*(8.314 \, J/(mol-K))*(299 \, K)}{1.008 \times 10^{-3} \, kg/mol} =2.2195 \times 10^{5} \, Pa$

Note that 1 atm = 101325 Pa
Therefore
p = 2.2195 x 10⁵ Pa
= 221.95 kPa
= (2.295 x 10⁵)/101325 atm
= 2.19 atm

Answer:
2.2195 x 10⁵ Pa (or 221.95 kPa or 2.19 atm)

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3 years ago

Hydrogen bonding is most often seen _____. see concept 2.3 (page 38) view available hint(s) hydrogen bonding is most often seen

Evgesh-ka [11]

<h3><u>Answer;</u></h3>

When hydrogen is covalently bonded to an electronegative atom

<h3><u>Explanation;</u></h3>

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3 years ago

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Paladinen [302]

Answer:

The particles that compose a gas are so small compared to the distances between them that the volume of the individual particles can be assumed to be negligible.

Explanation:

This is a postulate of the Kinetic Molecular Theory.

A is wrong. KMT assumes the that the volume of the particles is negligible.

B is wrong. KMT assumes that the distance between the particles is muck greater than their size.

D is wrong. It takes the large distances as a fact. KMT uses this as an assumption.

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In this experiment you are directed to add a limited amount of NaOH (aq) and then an excess amount. A similar strategy will be u

Verizon [17]

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After this metal hydroxide is formed, the base could be added in excess such that the metal hydroxide dissolves in the excess base by forming a complex.

For instance;

CuCl2(aq) + 2NaOH(aq) -------> Cu(OH)2(s) + 2NaCl(aq)

Cu(OH)2(s) + 2OH^-(aq) -------> [Cu(OH)4]^2+(aq)

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Ort

ivanzaharov [21]

Answer:

1 ethanol is right answer

Explanation:

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