What is the molecular shape of hydrogen sulphide molecule, H₂S?

Answers

Answer 1
Answer: the shape would be bent

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How do ionic bonds affect the properties of ionic compounds?A) The bonds weakly hold ions together, increasing the melting point.
B) The bonds strongly hold ions together, reducing the boiling point.
C) The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor.
D) The bonds prevent electrons from moving throughout the crystal, so a solid ionic compound is a poor conductor.

Answers

C) The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor is your answer, however, technically speaking the bonds prevent electrons from moving, since the ions are locked in place and don't want their electrons to go.

Final answer:

Ionic bonds in ionic compounds result in a crystal lattice structure that prevents free movement of ions, making solid ionic compounds poor conductors of electricity. However, dissolved or melted ionic compounds can conduct electricity. Additionally, these strong bonds lead to high melting and boiling points for ionic compounds.

Explanation:

Ionic bonds greatly affect the properties of ionic compounds. Ionic bonds are formed when one atom donates an electron to another, resulting in charged ions that attract each other. Option C) and D) are both partly correct. Ionic bonds lock these ions in a crystal lattice structure which prevents free movement. This makes solid ionic compounds poor conductors of electricity. However, if these compounds are dissolved in water or melted (thus allowing ions to move freely), they can conduct electricity.

Moreover, ionic bonds are strong. As a result, it requires a lot of energy to break these bonds, leading to high melting and boiling points for ionic compounds, which eliminates options A) and B).

Learn more about Ionic bonds here:

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Hydrogen bonding is a type of(1) strong covalent bond
(2) weak ionic bond
(3) strong intermolecular force
(4) weak intermolecular force

Answers

Option 3. strong intermolecular force

Certain substances such as H2O, HF, NH3 from hydrogen bonds, and the formation of which affects properties (mp,bp,solubility) of substance. Other compounds containing OH and NH2 groups also form hydrogen bond. Molecules of many organic compounds such as alcohols, acids, amines, and amino acids contain these groups, and thus hydrogen bonding plays an important role in biological science.

How does the reaction affect oxygen atoms?

Answers

In the oxygen structure, all electrons are paired, thus, making oxygen dimagnetic. But actual experiments have shown that oxygen has paramagnetic properties. They are attracted to magnets. 

The oxygen atoms react according to the kind of reaction it undergoes. Mostly, O2 is present in combustion reactions. For example, combustion of carbon:

C + O2 ---> CO2

Physical conditioning or acquired skill cannot be inherited.
True
False

Answers

True just because your parent is great at football does not mean that you will be as good as they were. They can teach you but you won't naturally be Olympic good if your parents are olympians

Answer:

Hi there, the answer is true

Explanation:

:D

What similarities do nuclear energy and chemical energy share?

Answers

atoms can be the source of both nuclear and chemical energy. Nuclear energy involves the atom's nucleus; chemical energy involves the atom's electrons—subatomic particles that surround the nucleus.

Both are types of potential energy, and Involve stored energy.  

An important application of exponential functions is working with half-life of radioactive isotopes in chemistry. These isotopes emit particles and decay into stable forms, in doing so they lose mass over time. Half-life of an isotope is the time it takes for the amount to decay by half. For example, the half life of Bromine-85 is 3 minutes. This means if you start with 60g of Br-85, 3 minutes later 30g will remain. How much Br-85 will remain after 20 minutes?

Answers

Answer : The amount left after 20 minutes is, 0.592 grams.

Explanation :

Half-life of Bromine-85 = 3 min

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{3\text{ min}}

k=0.231\text{ min}^(-1)

Now we have to calculate the amount left after decay.

Expression for rate law for first order kinetics is given by:

t=(2.303)/(k)\log(a)/(a-x)

where,

k = rate constant

t = time taken by sample = 20 min

a = initial amount of the reactant  = 60 g

a - x = amount left after decay process  = ?

Now put all the given values in above equation, we get

20=(2.303)/(0.231)\log(60)/(a-x)

a-x=0.592g

Therefore, the amount left after 20 minutes is, 0.592 grams.