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KatRina [158]
3 years ago
6

Answer the question below pls

Chemistry
2 answers:
Veseljchak [2.6K]3 years ago
6 0

Answer:

The answer would be at 120°C

Archy [21]3 years ago
5 0
120 degrees Celsius
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Convert 213.62 grams of xenon gas at STP to L.
jolli1 [7]

Answer: The coefficient is 3.645

The exponent is 1

There are 4 significant digits

The rightmost significant figure is 5

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as 5.0\times 10^3

According to avogadro's law, 1 mole of every gas contains avogadro's number 6.023\times 10^{23} of particles, occupy 22.4 L at STP and weighs equal to its molecular mass.

131.29 g of Xe occupy = 22.4 L at STP.

Thus 213.62 g of Xe occupy = \frac{22.4}{131.29}\times 213.62=36.45L at STP.

Scientific notation = 3.645\times 10^1L

The coefficient is 3.645

The exponent is 1

There are 4 significant digits

The rightmost significant figure is 5

4 0
3 years ago
Question 1:
Alona [7]

Question 1:

(a) Sulfurous acid: H2SO3

Sulfuric acid: H2SO4

(b) Nitrous acid: H2NO2

Nitric acid: H2NO3

Question 2:

To calculate the pH, based on concentration of H+ ions, there is one formula:

ph =   - log_{10}(c(h + ))

So the pH of this solution is

-  log_{10}( {10}^{ - 9} )  = 9

(the solution is basic).

5 0
3 years ago
The most important ore of aluminum is _____ show the chemical formula ​.​
3241004551 [841]

Answer:

The most important ore of aluminum is<u> Bauxite.</u>

And its chemical formula is Al_2O_3.2H_2O.

Explanation:

Bauxite is the most important ore of Aluminium from which Aluminium is extracted. Bauxite is a rock and composed of Aluminium bearing mineral.

And its chemical formula is Al_2O_3.2H_2O.

It contains Gibbsite, Bohmite and Diaspore along with iron.

It is a soft material with somewhat white to grey to reddish brown in colour.

It has an earthy lustre and low specific gravity.

<u />

5 0
3 years ago
What type of rock commonly often contains gas bubbles and the mineral(s) hornblende, muscovite, olivine, lucite, and/or plagiocl
olga_2 [115]

Scoria

Explanation:

Scoria is a  rock that is commonly made up of gas bubbles and minerals such as hornblende, muscovite, olivine, lucite and or plagioclase.

Scoria is an extrusive igneous rock with a lot of cavities and vesicles indicating gas bubbles.

  • Scoria is product of basaltic magma.
  • It has nearly the same composition as basalt since it originates from it.
  • They silica deficient and very fine grained with holes in them.
  • The holes shows channels by which trapped gases are forcefully ejected out.
  • They are usually found associated with cindercone volcanoes.

learn more:

Volcanoes brainly.com/question/5055821

#learnwithBrainly

4 0
3 years ago
Determine if the chemical equation is balanced or not balanced. 1N2 + 1H2&gt; NH3 ​
almond37 [142]

Answer:

Explanation:

7 0
3 years ago
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