3 years ago

What is the science of stratigraphy

Chemistry

2 answers:

Romashka-Z-Leto [24]3 years ago

8 0

Branch of geography that studies rock layers

raketka [301]3 years ago

5 0

Stratigraphy is a branch of geology which studies rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has two related subfields: lithologic stratigraphy or lithostratigraphy, and biologic stratigraphy or biostratigraphy.

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What is the oxidation number of neon

vredina [299]

Answer:

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Explanation:

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4 years ago

Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars?

cupoosta [38]

Answer:

helium

Explanation:

coz it take part In fusion reaction

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3 years ago

how many moles of gas does it take to occupy 120 liters at a pressure of 2.3 atmospheres and a temperature of 340 K?

dezoksy [38]

Data:

P (pressure) = 2.3 atm
V (volume) = 120 L
T (temperature) = 340 K
n (number of mols) = ?
R (Gas constant) = 0.082 (atm*L/mol*K)

Formula:

$p*V = n*R*T$

Solving:
$p*V = n*R*T$
$2.3*120 = n*0.082*340$
$276 = 27.88n$
$27.88n = 276$
$n = \frac{276}{27.88}$
$n = 9.89956...\to \boxed{\boxed{n\approx 9.90\:mols}}\end{array}}\qquad\quad\checkmark$

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4 years ago

An element has two isotopes. One has a mass of 5.03 amu and an abundance of 25%, the other has a mass of 7.20 amu and an

pav-90 [236]

Answer:

Average atomic mass = 6.6575.

Explanation:

As fractions the abundance is 1/4 and 3/4.

The average atomic mass = (5.03 + 3(7.20) / 4

= 6.6575.

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3 years ago

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artcher [175]

Answer:

Option 1

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2 years ago