What heats the mantle?

Chemistry

1 answer:

storchak [24]3 years ago

7 0

Answer:

Fire

Explanation:

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A sample of oxygen gas has a volume of 45.8 mL when its pressure is 0.492 atm. What

White raven [17]

Answer:

Explanation:

$P_1=0.492\:atm\\V_1 = 45.8\:ml\\V_2 = ?\\P_1 = 0.954\:atm\\\\Boyle's Law = P_1V_1 = P_2V_2\\\\Lets \:make\: V \:subject\:of\:the\:formula\\\\\frac{P_1V_1}{P_2} = \frac{P_2V_2}{P_2} \\ \\V_2 =\frac{P_1V_1}{P_2} \\V_2 = \frac{0.492\times45.8}{0.954}\\ \\V_2 = \frac{22.5336}{0.954} \\\\V_2 = 23.620\\\\V_2 = 23.6$

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3 years ago

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you are given 500 mL of a 5M stock solution of ammonium chloride but for your experiment, you only need 100 mL of a 0.65M soluti

mafiozo [28]

Answer:

13ml

Explanation:

to prepare dis solution first you need a volumetric flask of 100ml calibrated .
using dilution formulae u will need 13ml from the stock
measure 13ml of the 5M stock of the 500ml
then drop it into the 100ml calibrated flask
then add water till it reach d mark and you shake thoroughly

6 0

3 years ago

Which best describes teratogen

Readme [11.4K]

A teratogen is an exposure (substance, organism or process) in pregnancy that has a harmful effect on the fetus. Teratogens can be diseases, medications, drugs and environmental exposures.

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3 years ago

A student has two unopened 33 CL cans containing carbonated water. Can A has been stored in the garage 32 degrees and can B has

IgorC [24]

Answer:

A. Can A will make a louder and stronger fizz than can B.

Explanation:

The solubility of a gas in a liquid decreases as the temperature increases, so the warmer can will have more undissolved carbon dioxide.

The warmer can will be under greater pressure, so it will make a louder and stronger fizz.

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3 years ago

How does a buffer resist change in ph upon addition of a strong acid?

lora16 [44]

Any buffer exists in this equilibrium

HA <=> $H^+ + A^-$
In a buffer, there is a large reservoir of both the undissociated acid (HA) and its conjugate base ( $A^-$ )

When a strong acid is added, it reacts with the large reservoir of the conjugate base ( $A^-$ ) forming a salt and water. Since this large reservoir of the conjugate base is used, the ph does not alter drastically, but instead resist the pH change.

8 0

3 years ago