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Artemon [7]
3 years ago
13

How has the composition of the atmosphere changed overtime?

Chemistry
1 answer:
snow_lady [41]3 years ago
5 0
The composition of the atmosphere change over time by are humans activity
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A lead apron is a ________________ instrument classification of disease transmission. Fill in the blank
pochemuha

Answer:

A lead apron is a <u>non-critical </u> instrument.

Hope it helps!

7 0
2 years ago
(You do) If you have 47.2 mol of Na available, along with an excess of Cl₂, how many grams of NaCl can you produce?
IrinaVladis [17]

Answer:

2,760 grams NaCl

Explanation:

To find grams of NaCl, you need to (1) convert moles of Na to moles of NaCl (via mole-to-mole ratio from reaction) and (2) convert moles of NaCl to grams (via molar mass from periodic table). The final answer should have 3 significant figures based on the given measurement.

2 Na + Cl₂ --> 2 NaCl

Molar Mass (NaCl) = 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl) = 58.44 g/mol

47.2 moles Na           2 moles NaCl              58.44 grams

----------------------  x  ---------------------------  x  -------------------------  =
                                   2 moles Na                   1 mole NaCl

= 2,758.368 grams NaCl

= 2,760 grams NaCl

5 0
2 years ago
this is the term used to describe magma that has left earth's interior usually through the force of a volcano
butalik [34]

Answer:

Lava

Explanation:

Once magma leaves the inside of the earth, it just gets a new name, which is lava.

5 0
3 years ago
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Water is heated to a certain temperature in a large microwavable container. If a cup is used to remove some of the water from th
Alona [7]

Answer: C

Explanation:

3 0
2 years ago
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Which of earth's spheres includes the oceans, groundwater, lakes, and glacier
nydimaria [60]
That would be the hydrosphere (It's easy to remember because Hydro means water)

Hope this helps
8 0
3 years ago
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