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vredina [299]
3 years ago
8

Please i need help im really confused

Chemistry
1 answer:
EastWind [94]3 years ago
3 0

Answer:

Explanation:

Probably three.

  1. That resident is not employed by the coal mine
  2. His/her income is not affected by the presence of the mine.
  3. Finally, three doesn't use the water -- likely because of its color. That isn't bias. It's common sense. The water is contaminated with something. It is better to be safe than sorry. I've seen lakes with green algae in it. One of the causes is human waste being pumped into it.
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A weather balloon has a volume of 52.5 liters at a temperature of 295 K. The balloon is released and rises to an altitude where
Goryan [66]
So you have a balloon rising through the atmosphere. use the formula p1/v1=p2/v2 and add the variables into the equation, leaving 295/52.5=252/x. multiply 252 by 52.5 and divide that number by 295.
52.5*252=13230. divide by 295 =44.9 L
5 0
3 years ago
Read 2 more answers
What do liver cells do?
marin [14]
The liver cells produce proteins to avoid blood clotting. They also break down old or damaged blood cells.
4 0
4 years ago
Intrutrusive rocks are formed when magma is squeezed in between other rocks true or false
Iteru [2.4K]

Answer:

I think the correct answer for this is False.

5 0
4 years ago
Tell whether the following pairs of compounds are identical, constitutional isomers, stereoisomers, or unrelated. (a) cis-1,3-Di
Aleks04 [339]

Answer:

     (a) Constitutional Isomers

     (b) Constitutional Isomers

Explanation:

Constitutional isomers are also known with the name Structural Isomers. These are the compounds which have same chemical formula but differ in arrangement of atoms i.e. structure.

Both the compounds <em>cis-1,3-dibromocyclohexane</em> and <em>trans-1,4-dibromocyclohexane</em> have the same chemical formula C_{6} H_{10} Br_{2} but have different structure as shown in the image below.

In the second case the compounds <em>2,3-dimethylhexane</em> and <em>2,3,3-trimethylpentane</em>, both have same chemical formula C_{8} H_{18} but have different structures which is shown in the image below.

Thus it is clear that in both the groups (a) and (b) the given compounds are Constitutional Isomers.

7 0
3 years ago
If the solubility of o2 at 0.370 atm and 25 °c is 15.3 g/100 g h2o, what is the solubility of o2 at a pressure of 2.40 atm and 2
ohaa [14]
According to Henry's law:

C = K P         when,
C is the solubility of a gas at a constant temperature in a particular solvent.
K is the Henry law constant 
p is the pressure of the gas

we have the pressure and the solubility so we will get the K at first:
by substitution:
0.153 = K * 0.37atm 
K= 0.4
∴ C when P = 2.4 atm
∴ C = 0.37 * 2.4 atm = 0.888   = 88.8 g/100g H2O


8 0
3 years ago
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