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Ipatiy [6.2K]
3 years ago
14

If the temperature of the earth's layers increases by about 90 degrees fahrenheit for every 1 mile from the surface and you are

estimating the temperature of a point in the mantle 90 miles below the surface, how hot would the mantle be at that depth?
Chemistry
2 answers:
zzz [600]3 years ago
6 0

Answer:

<h2><em><u>27,900°F</u></em></h2>

Explanation:

study island

bogdanovich [222]3 years ago
4 0
The rate of change of the temperature of the Earth's surface is given to,
                                       90°F/mile
To determine the temperature x miles away from the surface, we multiply the depth by the given rate. This will give us the answer of,
                                  T = (90°F/mile)(90 mile)
                                      = 8100°F
Thus, the temperature 90 miles deep in the Earth's surface is equal to 8100°F. 
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During the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole o
astraxan [27]

Answer:

CH4(g) +2O2____ CO2(g) +2H2O (l)

3 0
3 years ago
Sodium reacts with chlorine gas according to the following reaction: 2Na(s)+Cl2(g)→2NaCl(s) What volume of Cl2 gas, measured at
asambeis [7]

Answer:6.719Litres of Cl2 gas.

Explanation:According to eqn of rxn

2Na +Cl2=2NaCl

P=689torr=689/760=0.91atm

T=39°C+273=312K

according to stoichiometry of the reaction,1Moles of Cl2 gives 2moles of NaCl

But 28g of NaCl was given,we have to convert this to moles by using the relation, n=mass/MW

MW of NaCl=23+35.5=58.5g/mol

n=28g(mass given of NaCl)/58.5

n=0.479moles of NaCl

Going back to the reaction,

if 1moles of Cl2 produces 2moles of NaCl

x moles of Cl2 will give 0.479moles of NaCl.

x=0.479*1/2

x=0.239moles of Cl2.

To find the volume, we use ideal ggas eqn,PV=nRT

V=nRT/P

V=0.239*0.082*312/0.91

V=6.719Litres

6 0
3 years ago
9. Light is used in photosystem II and photosystem I to
Snowcat [4.5K]

Answer:

A. power the Calvin cycle.

Explanation:

because it helps to run theblife of plants with easily

4 0
3 years ago
Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a liquid?
asambeis [7]

Answer:

The kinetic energy of the molecules increases

Explanation:

Because when the water is heated up more kinetic energy is added.

5 0
2 years ago
Nvermind i messed u. thats not what i meant to outtb ycgdgc8ydsaox agdydac bc7w
jasenka [17]

Answer:

same

Explanation:

yes, I agree 100% and you are correct *applaud*

5 0
3 years ago
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