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astra-53 [7]
3 years ago
10

Humans exhale carbon dioxide when they breathe. If the concentration of carbon dioxide in the air that

Chemistry
1 answer:
Verizon [17]3 years ago
3 0

Answer:

4 people

Explanation:

In order to know this, we need to gather the data.

First we have 3.5x10⁴ g of LiOH. This grams are to be last for the whole 9 days mission shuttle.

So, we first need to know how much of CO₂ will be neutralized by this mass. This can be done calculating the moles of LiOH, and then, the moles of CO₂

The molecular weight of LiOH is 23.94 g/mol and for CO₂ is 44 g/mol so:

CO₂ + 2LiOH -------> Li₂CO₃ + H₂O

moles of LiOH = 3.5x10⁴ / 23.94 = 1461.988 moles

We have a mole ratio of 1:2 so the moles of CO₂:

moles CO₂ = 1461.988 / 2 = 730.994 moles

The mass of CO₂ for the 9 days will be:

m CO₂ = 730.994 * 44 = 32163.74 g

Now, let's see how much it has to be used per day:

m CO₂/d = 32163.74 / 9 = 3573.75 g per day

This means that we can only take a few astronauts, and this number is:

n° astronaut = 3573.75 / 8.8x10²

<h2>n° astronaut = 4.06</h2><h2>In other words, only 4 astronaut</h2>
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Help me please help...
Mashcka [7]

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases. -google

its probably 40

8 0
2 years ago
We start with the molecule below instead of palmitic acid, which step will be interrupted and which enzyme will be used to corre
zepelin [54]

Answer: Step 1, Isomerase.

Explanation:

Form the version of palmitic acid in the step one by changing the double bond within alpha and beta carbon by Isomerase.

B and C are Isomers, the molecule only differ in configuration.

4 0
3 years ago
When a new bond forms in a chemical reaction, what happens?
Kisachek [45]
The answer to this question would be A. Energy is released. 

When a chemical bond is a form, the bond will either suck up energy or produce energy. So, to be precise the energy is not always released but also can be absorbed. In this case, the energy released number will be a minus.

Options B and C is definitely wrong since the bond is formed by an electron, it won't affects neutron/proton.
Option D might be true since the product is made of 2 or more atoms then it would seem larger. But the size of the actual atom won't be increased.

8 0
3 years ago
Read 2 more answers
Does the total volume of substances remain the same when they are combined? Support your conclusion with evidence.
s344n2d4d5 [400]

Answer:

I believe the answer is, 'If mass remains the same while the volume of a substance increases, the density of the substance will decrease.'

explanation: density= mass divided by volume, meaning that volume and density are inversely proportionate.  

Explanation:

7 0
2 years ago
Which Scientists’ observations eventually led to the theory of continental drift?
Vitek1552 [10]

Alfred Wegener

Explanation:

Alfred Wegener in 1912, proposed the theory of continental drift from his careful studies of different land masses. From his observations, he suggested the following:

  • Some fossils of tropical plants were found in polar and temperate regions.
  • Fossils of mesosaurus were found in South America and South Africa now separated by the Atlantic ocean.
  • He fitted the continents into a giant land mass puzzles.
  • Coal beds in Europe were similar to those in United States.
  • Mountain chains in the edge of West Africa was similar to that of Eastern part of South America.

His theory lacked a mechanism which facilitated the plate movement.

Learn more:

Wegener brainly.com/question/5002949

#learnwithBrainly

8 0
3 years ago
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