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posledela
3 years ago
14

3

Chemistry
2 answers:
Murrr4er [49]3 years ago
7 0

Answer:

Look at the properties of Oxygen and Silicon - the two most abundant elements in the Earth's crust - by clicking on their symbols on the Periodic Table.

Explanation:

vfiekz [6]3 years ago
3 0

Answer:

D. silicon and oxygen

Explanation:

The most abundant elements on the earth's crust are silicon and oxygen. Silicon and oxygen forms a wide range of silicate minerals they are found in the crust.

There are many silicates which are derived from the basal units of silicon and oxygen combining together. Other atoms or elements then combines with the silicate framework.

Oxygen is about 46% abundant in the crust whereas silicon takes about 28% to be the second most abundant element on the crust.

Silicate minerals abounds in rocks and within the soil.

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Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas. The reactants in this reaction are?
VLD [36.1K]

Magnesium and Hydrochloric acid or Mg and HCl.

The reactants in a reaction are the elements or compounds doing the actual reacting. In this word problem, you can identify this with the keyword reacts. It states, "Magnesium reacts with hydrochloric acid." Thus, you can also infer that the products are what are produced.

Hope this helps!

7 0
3 years ago
Determine the vapor pressure (atm) of rubbing alcohol (isopropanol) at 20.0 °C. The normal boiling point of isopropanol is 82.3
Scorpion4ik [409]
To answer this question, we will use the equation of Clausius-Clapeyron which can be written as follows:
ln(P1/P2) = ΔH/R x (1/T2 - 1/T1)

Now, let's check the parameters in this equation:
P1 is the normal pressure of the vapor which is 4.24 kPa 
T1 is the boiling point at this pressure which is 293 K
ΔH is the heat of vaporization given as 39.9 kJ/mol
T2 is given as 355.3 K 
and we need to calculate P2

Substitute in the equation to get P2 as follows:
ln(4.24/P2) = 39.9/0.008314 x (1/355.3 - 1/293)
P2 = 101.2 kPa = 0.998766 atm
8 0
3 years ago
Help me ples HELP HELP HELP HELP HELP
Darya [45]

Answer:

Explanation:autotroph and photosynthesis

sorry if I am wrong I am dumb. :( :(

I found it on google.

God bless, stay safe, and good luck! :) :)

3 0
3 years ago
What is needed for a wind farm to be effective
qwelly [4]

Answer:

for a effective wind farm you would need wind turbines a windy area a rotation powered generator and something to use it on

Explanation:

7 0
2 years ago
What is a magnetic field
babymother [125]

a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

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