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3 years ago

Which of the following substances has the strongest intermolecular forces?

Chemistry

1 answer:

sleet_krkn [62]3 years ago

7 0

Answer:

HCl.

Explanation:

Of all the type of bond, Ionic bonds are the strongest. Among all the compounds in the options only HCl has ionic bond, rest have covalent bonds. So, the strongest intermolecular forces is in HCl. Ionic bond are formed with the transfer of electrons, one atom is donor and the other is acceptor.

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A type of rock that undergoes changes because of heat and pressure

raketka [301]

Answer:

metamorphic rocks

Explanation:

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3 years ago

In Bohr model N3 moves up to N 4 the electron occupies distinct energy states where energy is absorbed or emmitted

rewona [7]

Answer:

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3 years ago

What is the half-life of an isotope that decays to 12.5% of its original activity in 19.8 hours?

katen-ka-za [31]

$x= x_{0} e^{kt} ,where~ x ~is~ the ~ |amount\ of \material\ at\ any~~time~t
$
$and~ x_{0} ~the~original~amount.$
$when~x= \frac{12.5}{100} x_{0} }= \frac{125}{1000} x_{0}$
$\frac{x}{ x_{0} } = \frac{125}{1000}= \frac{1}{8}$
$when t=19.8 hrs,
x= x_{0} e^{19.8 k}, 
 \frac{x}{ x_{0} } = e^{19.8 k}, 
 \frac{1}{8} = e^{19.8k} ,
ln \frac{1}{8} =19.8 k,
$
$ln1-ln8=19.8k,
0-ln 2^{3} =19.8 k,
-3 ln2=19.8k
k= \frac{-3 ln2}{19.8} = \frac{- ln 2}{6.6}$ $x= x_{0} e^{ \frac{-ln2}{6.6}t } ,
 \frac{x}{ x_{0} } = e^{ \frac{- ln 2}{6.6}t } 
$ $\frac{1}{2} = e^{ \frac{- ln2}{6.6}t } = \frac{1}{ e^{ \frac{ln 2}{6.6} t} } ,
2= e^{ \frac{ln2}{6.6}t } ,
ln2=ln e^{ \frac{ln 2}{6.6}t } = \frac{ln 2}{6.6} t~ln e= \frac{ln2}{6.6} t,$

8 0

4 years ago

Which will reduce the possible environmental damage associated with mining uranium?

blagie [28]

We need to discuss about reduction of possible environmental damage associated with uranium mining.

There are several extraction processes involved in mining uranium as- (i) surface mining, (ii) heap leaching, (iii) underground mining and so on.

There are so many risks involved towards environment and health.

There are some improvements for long term stabilization of Uranium mining have been documented. They are as follows-back-filling and using residues for the construction of motorways, washing of soil with water, carbon treatment inclusion of new materials like room temperature ceramics for the immobilization of various contaminants, de-watering, and land encapsulation.

7 0

3 years ago

Read 2 more answers

HCl + CaCO3 → CaCl2 + H2O + CO2 balanced equation<br><br><br> Pls Help i will give 100 Points!!!

vagabundo [1.1K]

Answer:

i think its CaCO3 + 2HCl → CaCl2 + H2O + CO2

Explanation:

3 0

2 years ago

Read 2 more answers