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shepuryov [24]
3 years ago
7

Complex chemical catalysts produced by living cells are called enzymes. true false

Chemistry
2 answers:
SIZIF [17.4K]3 years ago
7 0
True 
Enzymes help the body in digestion and other bodily functions which involve chemicals.
Grace [21]3 years ago
5 0
This statement is true. Complex chemical catalysts produced by living cells are enzymes. 
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How many Al atoms are there in 40.5 g of Al foil? Al:27
andrew-mc [135]

Answer:

c) 9.03 x 10^23

Explanation:

find the molar mass of Al

Al is 27.0 grams

Then use that, to find the number of moles in Aluminum.

Then use Avogadro's number which is 6.02 * 10^23

After that, write all of that down with dimensional analysis.

40.5 g * 1 mol/ 27.0 g of Al  * 6.02 x 10^23 / 1mol

As your final answer, you will get 9.03 * 10^23 atoms with sig figs.

Hope it helped!

4 0
3 years ago
Can anyone help with thiss??
IrinaVladis [17]
  1. l
  2. kg
  3. cm
  4. gm
  5. ml
  6. km,m
  7. m
  8. nm
  9. mg
  10. ms
  11. gm
  12. nm
  13. .
  14. .
  15. l,gm
  16. .
  17. kg
  18. m
  19. gm,m
  20. s

Hope this helps :-). And....

ml: milliliter

kg: kilogram

m: meter

mg: milligram

mm: millimeter

ms: millisecond

l: liter

km: kilometer

µg: micro gram

cm: centimeter

g: gram

nm: nano meter


5 0
3 years ago
Determine which set of properties correctly describes graphite (C)? A. Malleable, brittle, soluble in oil or gasoline, high melt
satela [25.4K]

Answer:

D. Dense, conducts electricity, high melting point, giant structure, brittle

Explanation:

Graphite is an allotrope of carbon. It is similar to diamond except for some differences in their properties and mode of formation.

Graphite is typically a non-metal and should have properties of non-metals. Metals are malleable, ductile, conducts electricity, etc.

Graphite is able to conduct electricity because of the presence of free mobile electrons in its structure.

It is dense but its density is lower than that of diamond but higher than water.

Graphite is brittle with a high melting point which is close to that of diamond.

6 0
3 years ago
Windblown________ can wear away rock
Bezzdna [24]
Windblown sand can wear away rock
8 0
3 years ago
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Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen,
Rzqust [24]

Answer:

Partial pressure

Explanation:

the scientists is measuring different pressure, so it would be partial pressure. Hope that this helps you and have a great day :)

4 0
3 years ago
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