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shutvik [7]
3 years ago
8

Which term names a metamorphic change in rocks over a wide area from tectonic forces in Earth's crust and mantle? A. local metam

orphism B. regional metamorphism C. contact metamorphism D. thermal metamorphism
Chemistry
2 answers:
Pavlova-9 [17]3 years ago
8 0
D is the answer. A, B,C are absurd. Doing a little word right there.
Alexus [3.1K]3 years ago
6 0
<span> B. regional metamorphism
Not sure on this one 100%
</span>
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In which regions of the atmosphere does temperature increase as altitude increases
Sveta_85 [38]

Answer:

<h2>stratosphere</h2>
  • In the stratosphere, temperature increases with altitude.
  • The stratosphere contains the ozone layer, which protects the planet from the Sun's harmful UV.
  • The higher layers contain few gas molecules and are very cold.
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5 0
3 years ago
What volume of hydrogen will be produced at STP by the reaction of 67.3 g of tin with excess water according to the following re
VikaD [51]

Answer:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

Explanation:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

5 0
3 years ago
Help. The answer to question 1 I didn't mean to click so please answer that as well.
Zepler [3.9K]
We have that energy=specific heat * change in temperature * mass. Thus, we have the final temperature (22) minus the initial temperature (55) to equal -33 as our change in temperature. Our specific heat is in J/g*C, so we're good with that because g stands for grams and the aluminium is measured in grams. As there are 10 grams of aluminum, we have
10*(-33)*0.902=-298 ish as our final temperature

An exothermic reaction would release energy and would therefore lose heat itself, while an endothermic reaction would absorb energy and gain heat. Therefore, losing heat would be an exothermic reaction

Feel free to ask further questions!
4 0
2 years ago
PLEASE HELP I NEED IT!!!!!
galina1969 [7]
Answer:
Molarity = 2.3 M

Explanation:
Molarity can be calculated using the following rule:
Molarity = number of moles of solute / volume of solution

1- getting the number of moles:
We are given that:
mass of solute = 105.96 grams
From the periodic table:
atomic mass of carbon = 12 grams
atomic mass of hydrogen = 1 gram
atomic mass of oxygen = 16 grams
Therefore:
molar mass of C2H6O = 2(12) + 6(1) + 16 = 46 grams
Now, we can get the number of moles as follows:
number of moles = mass / molar mass = 105.96 / 46 = 2.3 moles

2- The volume of solution is given = 1 liter

3- getting the molarity:
molarity = number of moles of solute / volume of solution
molarity = 2.3 / 1
molarity = 2.3 M

Hope this helps :)
8 0
2 years ago
Cytokinesis happens differently for plant and animal cells. Both separate cytoplasm between two new daughter cells. However, whi
8090 [49]

Answer:

Animal Cell Cytokinesis

Explanation:

5 0
3 years ago
Read 2 more answers
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