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3 years ago

Fill in the coefficients that will balance the following reaction: a0NaCl + a1FeO → a2Na2O + a3FeCl2

Chemistry

1 answer:

Helen [10]3 years ago

4 0

Answer:

2NaCl + FeO —-> 2Na2O + FeCl2

Explanation:

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12. Chubchub runs a 440m lap in 1.2 minutes. How many laps will Chubchub

Svet_ta [14]

Answer:

the number of laps in the case when he run for 50 minutes is 18,333.33

Explanation:

The computation of the number of laps in the case when he run for 50 minutes is shown below:

Given that

He runs 440m lap in 1.2 minutes

So in 50 minutes he can have laps of

= 440 × 50 ÷ 1.2

= 18,333.33 laps

hence, the number of laps in the case when he run for 50 minutes is 18,333.33

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3 years ago

A gram is one million times larger than a microgram but one billion times smaller than a _______________.

Len [333]

Answer : A hectogram

Explanation:

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3 years ago

What is the significance of "Er" in the diagram?

Drupady [299]

Answer:

The significance of "Er" in the diagram is :

B.) Threshold energy for reaction

Explanation:

Threshold energy : It is total amount of energy required by the reactant molecule to reach the transition state .

Activation energy : It is the excess energy absorbed by the molecules to reach the transition state.

Activation Energy = Threshold Energy - Average Kinetic Energy

This means Activation energy decreases on increasing kinetic energy

On increasing Temperature average kinetic energy of the molecule increases which reduces the activation energy and the reaction occur faster in that case.

Catalyst also reduces the Activation energy.

Er = Threshshold energy for reaction at 30 degree

Ea = Activation Energy

The given figure shows that the threshold energy decreases on increasing the temperature

Only the molecule having energy greater than Er can react to form product

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3 years ago

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List some Industrial plants and indicate the gaseous pollutants they emit

mixas84 [53]

Answer:

Sources of air pollutants from the industry include: power generation plant, boilers, bleaching plants and caustic soda/chlorine plant. Pollutants include particulate matter, chlorine, sulfur dioxides, hydrogen sulfides, carbon dioxide, carbon monoxides and nitrous oxides.

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3 years ago

A balloon has a negative charge and a glass rod has a positive charge.

Juliette [100K]

They will attract each other when brought close but when they touch the glass rod will become a negative charge and will repel each other

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