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Andrei [34K]
3 years ago
7

What are Earth's four interconnected global systems?

Chemistry
1 answer:
slava [35]3 years ago
6 0

Answer:

Answer D

Explanation:

The Earth's system can be placed into four sub- groupings- : atmosphere, biosphere, lithosphere, and hydrosphere.

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Marcia is given an incomplete chemical equation that includes the number of nitrogen atoms present in the products of the reacti
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If the products contain 3 nitrogen atoms, then so did the reactants since overall mass is conserved in a chemical reaction.
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3 years ago
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what if you drop a small magnet repeatedly it become demagnetized. explain. what is happening sub-atomically?
xenn [34]
I guess the the alignments of the atoms in the magnet are being demagnetized when it's dropped
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4 years ago
HELP QUICK I HAVE A QUIZ ITS JUST MULTIPLE CHOICE
melamori03 [73]

Answer:

i think its A

Explanatio

5 0
4 years ago
As much as 25 percent of the fruits and vegetables grown in Chinese agricultural regions rot before they can be transported the
gulaghasi [49]

C. Developing effective methods of food preservation

Explanation:

The development of effective methods of food preservation is a much more smaller and manageable problem that contributes to the complex problem.

The percentage of food rotting is not as a result of lack of an effective preservation technique as highlighted in the passage. It is due to the long distances of agricultural area from where the farms are located.

  • To cut the loss, efficient and rapid transportation techniques needs to be put in place to carry the fruits and vegetables to the area where they are needed.
  • This is the most complex problem that if solved can peg back food rot.
  • Additional measures should be put in place to preserve the food.

Other options does not address the subject matter  

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Preservation brainly.com/question/4853419

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7 0
3 years ago
Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s
bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

The equation used to calculate half life for first order kinetics:

k=\frac{0.693}{t_{1/2}}

where,

t_{1/2} = half-life of the reaction = 9.0 s

k = rate constant = ?

Putting values in above equation, we get:

k=\frac{0.693}{9}=0.077s^{-1}

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}     ......(1)

where,

k = rate constant  = 0.077s^{-1}

t = time taken for decay process = 50.7 sec

[A_o] = initial amount of the reactant = ?

[A] = amount left after decay process =  0.0741 M

Putting values in equation 1, we get:

0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}

[A_o]=3.67M

Now, calculating the time taken by using equation 1:

[A]=0.0055M

k=0.077s^{-1}

[A_o]=3.67M

Putting values in equation 1, we get:

0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s

Hence, the time taken by the reaction is 84.5 seconds

6 0
4 years ago
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