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4 years ago

HELP!!! please if anyone could help me with these two questions.?

Chemistry

2 answers:

Zina [86]4 years ago

5 0

Answer:

(Question 5) examine and describe cells

Explanation:

The microscope was only made to view cells/materials up close. Not any of those other answers....

IRINA_888 [86]4 years ago

3 0

The answers are D and B I just did the same thing like 20 mins ago trust me! Your welcome!

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2 years ago

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Hi guys I need an science matter experiment to do at school. For example which chocolate is best to take at a hot climate? Dark,

inysia [295]

Dark is the strongest chocolate.

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3 years ago

If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what woul

True [87]

The pressure of the gas would increase.

When gas is transported from a larger area to a smaller area it begins to increase in pressure.

Hope I could help, have a good one!

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4 years ago

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A ruptured tank in Anywhere, USA, spilled hydrochloric acid. Officials were reported to be concerned that the acid might mix wit

lawyer [7]

Answer:

Option C; NONE.

Explanation:

A chemical reaction forms new chemicals called the products from the initial chemicals called the reactants. The reaction between an acid and a base is called neutralization, and the products formed are water and a salt.

When hydrochloric acid and sodium hydroxide is mixed together, they interact, and result in salt and a release of heat.

The result of the interaction of these two highly aggressive compounds is table salt and water, these resulting compounds are ultimately harmless, and even beneficial, to human beings.

Therefore, NO TOXIC GAS WOULD BE FORMED BY MIXING HYDROCHLORIC ACID WITH SODIUM HYDROXIDE.

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3 years ago

Draw the Lewis structure for methane (CH4) and ethane (C2H6) in the box below. Then predict which would have the higher boiling

Alinara [238K]

Answer:

Ethane would have a higher boiling point.

Explanation:

In this case, for the lewis structures, we have to keep in mind that all atoms must have 8 electrons (except hydrogen). Additionally, each carbon would have 4 valence electrons, with this in mind, for methane we have to put the hydrogens around the carbon, and with this structure, we will have 8 electrons for the carbon. In ethane, we will have a bond between the carbons, therefore we have to put three hydrogens around each carbon to obtain 8 electrons for each carbon.

Now, the main difference between methane and ethane is an additional carbon. In ethane, we have an additional carbon, therefore due to this additional carbon, we will have more area of interaction for ethane. If we have more area of interaction we have to give more energy to the molecule to convert from liquid to gas, so, the ethane will have a higher boiling point.

I hope it helps!

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3 years ago