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lina2011 [118]
3 years ago
7

* If you found a fossil like the one pictured above in an open grassy field, what could you infer about this particular part of

Earth
during much earlier times?
Earth's earlier environment in this particular area was covered with water.
Earth's earlier environment in this particular area was most likely a deep
canyon
Earth's earlier environment in this particular area was frozen like the
ground coverings of a tundra.
Earth's earlier environment in this particular area was also similar to the
open, grassy field you see today.
Chemistry
2 answers:
Sergio039 [100]3 years ago
7 0

Answer:Do you have a photo available of the fossil? It’s fine if not!

Explanation:

Anastaziya [24]3 years ago
6 0

Answer:

A

it on the explanation for ms yoder

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What unit is not a measured volume
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4 0
3 years ago
Hydrocarbons containing only single bonds between the carbon atoms are called?
umka21 [38]

Answer:

Alkanes

Explanation:

Alkanes are hydrocarbons containing only single bonds between the parent chain carbons.

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Alkynes are hydrocarbons containing at least one triple bond between the parent chain carbons.

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2 years ago
How many moles of water vapor are formed. when 10 litres of butane gas c4h10 is burned in oxygen at STP ​
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gto

Explanation:

4 0
3 years ago
Help! What did I do wrong??
iogann1982 [59]

The molecules  of hydrogen gas that are  formed is  when 48.7 g  of sodium are added to water  is  6.375  x 10²³  molecules


  <u><em>calculation</em></u>

2 Na +2H₂O →  2 NaOH  +H₂

Step 1: find the moles  of sodium (Na)

moles =mass÷   molar mass

from periodic table the molar mass of Na = 23 g/mol

moles= 48.7 g÷ 23 g/mol =2.117 moles

Step 2:use the mole ratio to determine  the  moles of H₂

  from  given equation  Na:H₂ is 2:1

therefore the moles  of H₂ = 2.117 moles x 1/2=1.059 moles

Step 3: find the molecules of H₂ using the Avogadro's law

According  to  Avogadro's  law  1 mole = 6.02 x 10²³ molecules

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by cross multiplication

= [(1.059 moles x 6.02 x10²³  molecules) /  1 mole] =6.375  x 10²³  molecules

4 0
3 years ago
Why a finely powdered sample should be used in a melting point measurement?
lapo4ka [179]

because it a essential for good heat transfer

6 0
3 years ago
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