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Law Incorporation [45]
3 years ago
14

WILL MARK YOU BRAINLIEST!! how are a elements abundance in nature and percent composition related

Chemistry
1 answer:
Drupady [299]3 years ago
8 0
Because they both have to do with and chemistry science
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What are fluids? Why are they so called?​
navik [9.2K]

Answer:

<em>Liquids and gases are called fluids because they can be made to flow, or move.</em>

<em> In any fluid, the molecules themselves are in constant, random motion, colliding with each other and with the walls of any container.</em><em> </em><em>So</em><em> </em><em>that</em><em> </em><em>they're</em><em> </em><em>called</em><em> </em><em>fluids</em><em>.</em>

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2 years ago
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A substance with a definite volume and a definite shape is classified as a what?
sergeinik [125]

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Solids

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It can be found

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2 years ago
HNO3 is an Arrhenius ______________ and increases the concentration of __________ when added to water.
poizon [28]
HNO3 and H2SO4 are Arrhenius acids which will increase the concentration of H+ when dissolved in water.

KOH and Ca(OH)2 are Arrhenius bases that increase the concentration of OH- when dissociated in water.

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2 years ago
When using a dichotomous key to identify organisms what do we look at
Inga [223]

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a. physical features

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{and my biology teacher is <u><em>awesome</em></u> ❌}  

3 0
3 years ago
Ethyl acetate reacts with H2, in the presence of a catalyst to yield ethyl alcohol: C4H8O2 + 2H2--&gt; 2C2H6O. A. How many grams
Anni [7]
The balanced chemical reaction is:

<span>C4H8O2 + 2H2--> 2C2H6O

</span>A. How many grams of ethyl alcohol are produced by reaction of 2.7 mol of ethyl acetate with H2? 2.7 mol C4H8O2 ( 2 mol C2H6O / 1 mol C4H8O2) (46.07 g / 1 mol) = 248.78 g ethyl alcohol

B. How many grams of ethyl alcohol are produced by reaction of 13.0g of ethyl acetate with H2?
13.0 g C4H8O2 ( 1 mol / 88.11 g) ( 2 mol C2H6O / 1 mol C4H8O2) (<span>46.07 g / 1 mol) = 13.59 g ethyl alcohol</span>

C. How many grams of H2 are needed to react with 13.0g of ethyl acetate?
13.0 g C4H8O2 ( 1 mol / 88.11 g) ( 2 mol H2 / 1 mol C4H8O2) (2.02 g / 1 mol) = 0.5961 g H2
6 0
3 years ago
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