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3 years ago

THIS IS A SCIENCE QUESTION

Chemistry

2 answers:

Viktor [21]3 years ago

5 0

Answer:

Explanation:

Think of it like an hot air balloon

Hot air makes it rise and cool air sinks it downwards

MissTica3 years ago

4 0

Answer:

Explanation:

Hot air is less dense therefore it rises. Cold air is more closely packed therefore it is more dense. Less dense things rise while more dense things sink.

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How can the hemlock woolly upset natural ecosystem?

ale4655 [162]

Answer:

The HWA attacks eastern hemlock trees in forests and ornamental hemlock trees found in our residential landscaping. It feeds on the hemlock trees' young twigs by sucking the sap, causing their buds to die and needles to dry out and drop from the plant prematurely i think

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3 years ago

A piece of wood displaces 12.5 mL of water and has a density of 0.97 g/ml. what is the mass of the piece of wood? what will happ

mr Goodwill [35]

Density=0.97g/mL

Volume=12.5mL

$\\ \sf \longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \rm\longmapsto Mass=Density(Volume)$

$\\ \sf \longmapsto Mass=0.97(12.5)$

$\\ \sf \longmapsto Mass=12.125g$

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3 years ago

Which event would most likely lead to a thunderstorm g i v i n g b r a i n l e s i t

k0ka [10]

Answer:

Explanation:

I took a test like this and my teacher said this was right so ye. hopefully I remembered correctly if its wrong im sorry ;C

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3 years ago

Read 2 more answers

Natural gas (CH4) has a molar mass of 16.0 g/mole. You started out the day with a tank containing 200.0 g of natural gas. At the

hodyreva [135]

Considering the definition of molar mass, the moles of gas used are 10.625 moles.

<h3>Definition of molar mass</h3>

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

<h3>Amount of moles used</h3>

Natural gas has a molar mass of 16.0 g/mole.

You started out the day with a tank containing 200.0 g of natural gas. So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 200 grams are contained in how many moles?

$amount of moles at the beginning=\frac{200 gramsx1 mole}{16 grams}$

<u><em>amount of moles at the beginning= 12.5 moles</em></u>

At the end of the day, your tank contains 30.0 g of natural gas. So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 30 grams are contained in how many moles?

$amount of moles at the end=\frac{30 gramsx1 mole}{16 grams}$