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3 years ago

12

What happens to the number of carbon atoms in each compound?

1 answer:

katrin [286]3 years ago

4 0

The think that happens to the number of carbon atoms in each compound is that they increase by 1

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Describe two hazards identified with hydrochloric acid?

DerKrebs [107]

Frostbite to the skin and Severe burning to the eyes.

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3 years ago

A boy with a mass of 30 kg is ice skating at a speed of 2m/s. What type of energy is he using and what are the joules?

Annette [7]

Answer:

The boy is using kinetic energy. And his joules are 60

6 0

3 years ago

Consider the following intermediate chemical equations.

geniusboy [140]

<u>Answer:</u> The enthalpy of the overall chemical equation is -205.7 kJ

<u>Explanation:</u>

Hess's law is defined as the law which states that the total amount of heat absorbed or released for a given chemical reaction will remain the same whether the process occurs in one step or several steps.

In this law, a chemical equation is treated as an ordinary algebraic expression that can be added or subtracted to yield the required overall equation.

The enthalpy change or heat of the overall reaction is the summation of the enthalpies or heats of the intermediate reactions involved in the process.

The given overall chemical equation follows:

$CH_4(g)+4Cl_2(g)\rightarrow CCl_4(g)+4HCl(g);\Delta H^o_{rxn}$

The intermediate equations for the above reaction are:

(1) $CH_4(g)\rightarrow C(s)+2H_2(g);\Delta H_1=74.6 kJ$

(2) $CCl_4(g)\rightarrow C(s)+2Cl_2(g);\Delta H_2=95.7kJ$

(3) $H_2(g)+Cl_2(g)\rightarrow 2HCl(g);\Delta H_3=-92.3kJ$

According to Hess law, the enthalpy of the reaction becomes:

$\Delta H^o_{rxn}=[1\times (\Delta H_1)] + [1\times (-\Delta H_2)] + [2\times (\Delta H_3)]$

Putting values in above expression, we get:

$\Delta H^o_{rxn}=[1\times (74.6)] + [1\times (-95.7)] + [2\times (-92.3)]\\\\\Delta H^o_{rxn}=-205.7kJ$

Hence, the enthalpy of the overall chemical equation is -205.7 kJ

8 0

3 years ago

Use the diagram below to answer the question.

oksian1 [2.3K]

Answer: Every action force results in an equal and opposite reaction force.

Explanation: newtons law

5 0

3 years ago

Read 2 more answers

Which one of these is most likely to gain electrons and which one is most likely to lose electrons? (And please explain why)

Lelu [443]

Answer:

(I). The most likely to lose electron is Rubidium

(II). The most likely to lose electron is Bromine

Explanation:

Given that,

Radium, Indium, Phosphorus, Tellurium, Bromine and Rubidium

We know that,

Metal :

They atom which to lose electron these is called metal.

When the atom loses the electron then the positive charge come on the atom.

The most likely to lose electron is Rubidium

Non metal :

They atome which is gains electron. It is called non metal.

So, we can say that, the non metal gains electron.

When the atom gains the electron then the negative charge come on the atom.

The most likely to gain electron is Bromine

Hence, This is required answer.

8 0

4 years ago