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Schach [20]
3 years ago
6

A soil’s texture is demanded by

Chemistry
1 answer:
Drupady [299]3 years ago
3 0
It's determined by the sans,clay and silt.
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What happens if you overheat copper sulfate
Sergio039 [100]
If  you  overheat  copper  sulfate  higher  of   mass  will  be  lost that  is  copper  sulfate  will  loss  sulfur  and  oxygen which  led to a  higher loss  of  mass than  if  you  would   have heated enough. This  higher  mass lost will  be shown  in  calculation  as  percentage of  water  lost
8 0
3 years ago
What is the volume, in liters, occupied by 0.485 moles of Oxygen gas at 23.0 oC and 0.980 atm?
____ [38]
Use the universal gas formula

PV=nRT
where
P=pressure ( 0.980 atm)
V=volume (L)
T=temperature ( 23 ° C = 23+273.15 = 296.15 ° K)
n=number of moles of ideal gas (0.485 mol)
R=universal gas constant = 0.08205 L atm / (mol·K)

Substitute values,
Volume, V (in litres)
=nRT/P
=0.485*0.08205*296.15/0.980
= 12.0256 L
= 12.0 L (to three significant figures)


Read more on Brainly.com - brainly.com/question/10606064#readmore
5 0
3 years ago
How is a compound different from an element 2.3 lesson check?
zavuch27 [327]

<em>Answer:</em>

  1. Element: Element are pure substance consist of same type of atoms
  2. Compound: Form by combination of atoms of different elements.

<em>Distinguish features:</em>

  • Compounds represented by chemical formula while elements are represented by symbols.
  • Compounds have fixed ratios of atoms of different elements while in elements are distinguished by atomic no.
  • Compounds can be converted into simple substance by chemical methods but the elements cant be converted into simpler substance by means of chemical methods.

<em>Example:</em>

  • Water (H2O) is a compounds.
  • Iron (Fe) is an element.

<em>Summary:</em>

  • When two or more elements are mixed then compounds are formed.
4 0
3 years ago
When scientists create a representation of a complex process, they are
Burka [1]

Answer:

d making models.

Explanation:

When scientists create a representation of a complex process, they are inferring that they are making models.

A model is an abstraction of the real world or a complex process. Models are very useful in developing solutions to processes that are not easily simplified.

  • The models allow a part of a body to be simply studied.
  • Through this simple abstraction, extrapolations to other parts of the system can be deduced.
  • This can give very useful insights into the other parts of the system.
  • The heterogeneity of complex processes is a huge limitation to understanding them.
  • A homogenous part can be modelled and used to understand the system.
5 0
3 years ago
A reaction known to be first-order has a half-life of 23.6 min. If the initial concentration of the reactant is 2.50 M, what wil
Scrat [10]
First i wanted to say you look preety LOL

1) Determine the rate constant for the reaction: 

<span>k = (ln 2) / t_1/2 <--- I'll leave you to figure out how that came to be. Hint: use the integrate form of the first-order rate law </span>

<span>k = (ln 2) / 23.6 min </span>

<span>k = 0.02937 min^-1 <--- keep a few extra digits </span>

<span>1) use the integrated form of the first-order rate law: </span>

<span>ln A = -kt + ln A_o </span>

<span>ln A = - (0.02937 min^-1) (120 min) + ln 2.50 </span>

<span>ln A = -3.5244 + 0.91629 </span>

<span>ln A = -2.60811 </span>

<span>A = 0.07367 M <--- round off more as you see fit </span>

<span>Here's another way: </span>

<span>120 min / 23.6 min = 5.106383 half-lives </span>

<span>(0.5)^5.106383 = 0.02902856 <--- the decimal amount remaining after 5.106383 half-lives </span>

<span>0.02902856 x 2.50 M = the answer</span>

8 0
3 years ago
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