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Sloan [31]
3 years ago
13

1. Why was the eruption of Mount St. Helens significant?

Chemistry
2 answers:
maxonik [38]3 years ago
7 0
It wad the most deadly and economically destructive eruption in the history of usa
Vaselesa [24]3 years ago
6 0

Answer:

it killed an extremely late amount t of people and destroyed Pompeii I believe

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aev [14]
Sodium chloride is the answer
8 0
3 years ago
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Interphase Milosis: Prophese Mitosis: Melaphese Cytokinesis Anaphose<br>drag and drop​
Alinara [238K]
Wait, do you mind clarifying what you would like answered for the question?
5 0
3 years ago
What is the relationship between the location of volcanoes and earthquakes?
alexandr1967 [171]

Answer:

i think it is A

Explanation:

because earthquakes can cause volcanoes

8 0
3 years ago
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1. 17.0 grams of xenon hexafluoride is in a solid container. How many milliliters of that gas
BlackZzzverrR [31]

Answer: The volume of gas is 3020 ml

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 821.4 torr =  1.08 atm     (760 torr = 1atm)

V = Volume of gas in L = ?

n = number of moles = \frac{\text {given mass}}{\text {Molar mass}}=\frac{17.0g}{245.28g/mol}=0.069mol

R = gas constant =0.0821Latm/Kmol

T =temperature =302.7^0C=(302.7+273)K=575.7K

V=\frac{nRT}{P}

V=\frac{0.069mol\times 0.0821Latm/K mol\times 575.7K}{1.08atm}=3.02L=3020ml

Thus volume of gas is 3020 ml

4 0
3 years ago
Hemoglobin (Hb) can be viewed as having two quaternary states, a low oxygen affinity state (T), and a high oxygen affinity state
natta225 [31]
<h3><u>Answer;</u></h3>

The statements that are True are;

  • Upon binding a molecule of oxygen, Hb undergoes a conformational change that makes the binding of subsequent O2 molecules easier.
  • The conformational change induced in Hb upon binding oxygen is the result of a small movement (0.2 Å) of the iron cation in the center of heme.
  • Site-directed mutagenesis studies have indicated that the cooperativity of O2 binding in Hb is attributable to the movement of the F helix in Hb.
<h3><u>Explanation</u>;</h3>
  • Hemoglobin is a key pigment in the blood that transports oxygen gas to all the tissues in the body. It is made up of two types of chains; that is two alpha chains and two beta chains.  
  • in its deoxygenated state hemoglobin has a low affinity for oxygen compared to myoglobin. When oxygen is bound to the first subunit of hemoglobin it leads to subtle changes to the quaternary structure of the protein. This in turn makes it easier for a subsequent molecule of oxygen to bind to the next subunit.
8 0
3 years ago
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