3 years ago

How do geologists monitor volcanoes?

1 answer:

5 0

Answer:

<h2>Scientists use a wide variety of techniques to monitor volcanoes, including seismographic detection of the earthquakes and tremor that almost always precede eruptions, precise measurements of ground deformation that often accompanies the rise of magma, changes in volcanic gas emissions, and changes in gravity.</h2>

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How old is a bone if it presently contains 0.3125g of C-14, but it was estimated to have originally contained 80.000g of C-14?

matrenka [14]

Half-life of C-14 is 5730 years

5 0

4 years ago

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Calculate the number of moles in 0.850 grams of hydrogen atoms

Neko [114]

Answer:

number of moles= 0.844 moles

Explanation:

Number of moles of Hydrogen atom = given mass / molar mass

given mass= 0.850 g

Molar mass= 1.007 g

number of moles= 0.850/1.007 = 0.844 moles

3 0

3 years ago

Mars2501 [29]

Explanation:

area of rectangle=l×b

15=5×b
b=3cm

2.area of rectangle=l×b

28=l×4
l=7cm

3. perimeter of square=4×L

24=4×L
L=6cm

4. perimeter of rectangle=2(L+b)

14=2(4+b)
14=8+2b
2b=6
b=3cm

hope it helps.

4 0

3 years ago

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When 2.85 moles of chlorine reacts with excess tin, how many moles of tin(IV) chloride are formed

svp [43]

Sn + 2Cl2 ------> SnCl4
from reaction 2 mol 1 mol
from the problem 2.85 mol x mol

x=2.85*1/2≈1.43 mol SnCl4

7 0

4 years ago

Tin hydrogenooxolate formula

vladimir2022 [97]

Answer:

Tin(IV) Hydrogen Oxalate. Alias: Stannic Hydrogen Oxalate. Formula: Sn(HC2O4)4. Molar Mass: 474.8178. :: Chemistry Applications:: Chemical Elements, Periodic Table.

Explanation:

3 0

3 years ago

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