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3 years ago

What happened to global temperatures after the eruption of mt pinatubo

Chemistry

1 answer:

alexdok [17]3 years ago

3 0

Scientists measured a drop in the average global temperature of about 1 degree F (0.6 degrees C).

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A geochemist measures the concentration of salt dissolved in Lake Parsons, an isolated salt lake. He finds a concentration of 21

VikaD [51]

Answer:

68,2%

Explanation:

Supposing the initial salt concentration of lake Parsons is the same of non-isolated lakes, 6,67L, and the change of salt concentration in isolated lake is just for water evaporation it is possible to write:

6,67gL⁻¹×X = 21gL⁻¹×Y

-Where X is the initial water and Y is the water that remains in the isolated lake-

Thus:

6,67X = 21Y

0,318 = Y/X

0,318 is the ratio of water that remains between total water. To obtain the ratio of evaporated water:

1-0,318 = 0,682

In percentage: 68,2%

I hope it helps!

3 0

3 years ago

What is the approximate wavelength of radio waves

Ulleksa [173]

Answer:

CO32-:

✔ reactant

H2O:

✔ product

CO2:

✔ product

The 2 in front of H+:

✔ coefficient

Explanation:

3 0

2 years ago

A gas at 325 k has a volume of 4.0 L. If the gas’s volume changes to 2.0 L at constant pressure, what will be the new temperatur

inessss [21]

4/325 = 2/unknown temperature
unknown temperature= 2/(4/325)=162.5k

8 0

3 years ago

Read 2 more answers

Find the average atomic mass of neon, given the atomic masses and relative abundance of its three isotopes.

Lyrx [107]

19.992*0.9048+20.993*0.0027+21.991+0.0925 = 20.1797 amu (C)

6 0

3 years ago

F a shell can hold a maximum of 32 electrons, what is the value of n? 2 3 4 5

Arte-miy333 [17]

Answer: 4

Explanation:

Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.

Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as $m_l$ . The value of this quantum number ranges from $(-l\text{ to }+l)$ . When l = 2, the value of $m_l$ will be -2, -1, 0, +1, +2.

Given : a f subshell, thus l = 3 , Thus the subshells present would be 3, 2, 1, 0 and thus n will have a value of 4.

Also electrons give are 32.

The formula for number of electrons is $2n^2$ .

$2n^2=32$

$n=4$

Thus principal quantum no will be n= 4.

8 0

3 years ago

Read 2 more answers