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suter [353]
3 years ago
12

Which of the following is true of oxygen?

Chemistry
1 answer:
sergij07 [2.7K]3 years ago
6 0

Answer:

A. Oxygen is an element because its most basic unit is a single type of atom.

Explanation:

Oxygen is the chemical element with the symbol O and atomic number 8.

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The following choices contain densities of various materials. Based on these data, which will yield the fastest seismic velocity
Eduardwww [97]

Answer:

D. 5.6 g/cm^3

Explanation:

On the average seismic velocity increases with increase in depth due higher the pressure and more compaction

sand and shales in the Niger Delta Basin density–velocity relationship is

P = 0.31×V^0.25

A derivation of the original Gardner equation to calculate the average densities for sands and shales in wells.

ρ = α ×V^β

where

ρ = bulk density in g/cm3,

V = P-wave velocity,

α = 0.31 for V (m/s) and 0.23 for V(ft/s) and

β = 0.25.

Such that

ρ = 0.31 ×V^0.25

So the fastest seismic velocity will be in the densest material which is D. 5.6 g/cm3

5 0
3 years ago
A solution was prepared by mixing 20.00 mL of 0.100 M and 120.00 mL of 0.200 M. Calculate the molarity of the final solution of
Marat540 [252]

Answer:

0.186M

Explanation:

First, we need to obtain the moles of nitric acid that are given for each solution. Then, we need to divide these moles in total volume (120mL + 20mL = 140mL = 0.140L) to obtain molarity:

<em>Moles Nitric acid:</em>

0.0200L * (0.100mol / L) = 0.00200 moles

0.120L * (0.200mol / L)= 0.02400 moles

Total moles: 0.02400moles + 0.00200moles = 0.026 moles of nitric acid

Molarity: 0.026 moles / 0.140L

<h3>0.186M</h3>
6 0
3 years ago
Write down 5 examples of science in your every day life
DiKsa [7]

Ur cars exhaust tank ur freezer ur toaster ur microwave ur shower
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If the temperature of an object is 335K,how would his be expressed on the celsius scale ?
IRISSAK [1]
335K would be expressed as 61.85 degrees Celsius  
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25 POINTS:)
Digiron [165]
I suppose that the answer is A
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