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Korvikt [17]
2 years ago
5

What is the empirical formula of a compound that contains 10.0g aluminum and 8.88g oxygen?

Chemistry
1 answer:
Fiesta28 [93]2 years ago
6 0

A s the empirical formula of a compound that contains 10.0g aluminum and 8.88g oxygen assessing the effect of anxiety (low vs. high) and stress (low vs. moderate vs. high) on test.

Everyone experiences anxiety occasionally, but persistent anxiety can reduce your quality of life. Though likely best known for altering behavior, worry can have negative effects on our physical health. niety speeds up our heartbeat and breathing, concentrating blood flow aluminum the parts of our brains that need it. You are getting ready for a challenging situation by having this aluminum bodily reaction. Test performance may be impacted by anxiety. According to studies, pupils with low levels of test anxiety perform better on multiple-choice question (MCQ) exams than pupils with high levels of anxiety. Studies have indicated that female students have greater levels of test anxiety than male students.

Learn more about anxiety here:

brainly.com/question/4913240

#SPJ4

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How many grams of carbon dioxide are produced when 16.0
Kobotan [32]

Mass of CO₂ = 33 g

<h3>Further explanation  </h3>

Complete combustion of Hydrocarbons with Oxygen will be obtained by CO₂ and H₂O compounds.  

If O₂ is insufficient there will be incomplete combustion produced by CO and H and O  

Reaction

CH₄ + 2O₂⇒CO₂ + 2H₂O

mol CH₄ :

\tt =\dfrac{16}{16}=1

mol O₂ :

\tt =\dfrac{48}{32}=1.5

A method that can be used to find limiting reactants is to divide the number of moles of known substances by their respective coefficients

\tt CH_4:O_2=\dfrac{1}{1}:\dfrac{1.5}{2}=1:0.75

Because O₂ ratio smaller then O₂ becomes the limiting  reactants

So mol CO₂ from limiting reactants

mol CO₂ :

\tt \dfrac{1}{2}\times 1.5=0.75

mass CO₂ :

\tt mass=mol\times MW=0.75\times 44=33~g

7 0
3 years ago
Read 2 more answers
9. The molar mass of Na2SO4 is 142.1 g/mol.
Mice21 [21]

Answer:

the Answer is the second one

Explanation:

mole=mass/molar mass

mole=?

molar mass=142.1g/mole

mass=10.0g

4 0
3 years ago
PLEASE HELP I'LL MARK BRAINLIEST
dem82 [27]

Answer:

When you are in a cool place and exhale into your mask, the mask blocks and re-directs some of your breath up toward the top edge of the mask and under your glasses. ... When the warm breath hits the cool lens, the water in the breath condenses causing your lenses to fog up.

4 0
3 years ago
A rigid plastic container holds 1.00 l methane gas at 660 torr pressure when the temperature is 22.0 degrees Celsius. How much p
igor_vitrenko [27]
 <span>PV/T = P'V'/T' 
660 x 1.00/295.2 = P' x 1.00/317.8 
P'=710.5 torr</span>
6 0
3 years ago
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Lemon juice has a pH of about 2.0, compared with a pH of about 1.0 for stomach acid. Therefore, the concentration of H+ in stoma
LuckyWell [14K]

Answer:

The concentration of H⁺ in stomach acid is approximately ten times greater than that of lemon juice.

Explanation:

The H⁺ concentration of a solution is exponentially related to its pH value:

\rm [H^{+}] = 10^{-pH}.

For lemon juice:

\rm [H^{+}] = 10^{-2.0} = 0.01\; M.

For stomach acid:

\rm [H^{+}] = 10^{-1.0} = 0.1\; M.

Thus, the concentration of H⁺ in stomach acid is approximately ten times greater than that of lemon juice.

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3 years ago
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