What is the molarity (M) of a solution that contains .25 moles of a compound in 1.8 L of solution?
Answers
Answer:
The answer to your question is 0.14 M
Explanation:
Data
Molarity = ?
number of moles = 0.25
volume = 1.8 L
Formula
Substitution
Simplification and result
Molarity = 0.14 M
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Imagine our class has discovered a new element and named it Berkmarium. Berkmarium is known to have 3 naturally occurring isotopes. In nature, 70% of the element is Berkmarium-95, 28% is Berkmarium-97, and 2% is Berkmarium-94. Which isotope will the average atomic mass of Berkmarum be closest to, and why? Support your answer with a calculation.
b. raising the temperature
c. increasing the concentration
d. adding more of a substance to a mixture
Answers
The action that could slow a chemical reaction rate is adding more of a substance to a mixture. The answer is letter d. It does not give time for the rest of the reactants to be consumed because you are adding more of it causing to slow the reaction.
Answers
3 moles O₂ -------------> 2 moles Al₂O₃
? moles O₂ --------------> 1.00 mole Al₂O3
O₂ = 1.00 * 3 / 2
O₂ = 3 / 2
= 1.5 moles of O₂
Molar mass O₂ = 32.0 g
1.5 * 32.0 = 48 g of O₂
hope this helps!
Grams of the gas can be estimated by multiplying the moles and the molar mass. To produce 1 mole of aluminum oxide, 48 gms of oxygen is required.
What is mass?
The mass of the substance is the product of the moles and the molar mass of the given substance.
The balanced chemical reaction is shown as:
4 Al (s) +3 O₂ (g) → 2 Al₂O₃ (s)
From the above reaction, it can be concluded that:
3 moles of oxygen = 2 moles of aluminum oxide
So, x moles of oxygen = 1.00 moles of aluminum oxide
x is calculated as:
x = 3 ÷ 2 = 1.5 moles
Mass of oxygen:
mass = moles × molar mass
= 1.5 × 32
= 48 gms
Therefore, 48 gms of oxygen is required to produce 1 mole of aluminum oxide.
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how big the star is
b
how hot the star is
c
how dense the star is
d
how far away the star is
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Magnitude is about how far away the star is, how big it is, and how bright it is.
Answers
Answer:
C.
Explanation:
Metals tends to lose electrons and form positive ions, known as cations. Whereas, non-metals tend to gain electrons and form negative ions known as anions.
Answer:
C. Metal, nonmetal
Explanation:
Fill in the blanks
The metal elements tend to lose electrons and form positive ions, while the non-metal elements tend to gain electrons and form negative ions.
Answers
Hello there!
Hydrogen has one proton because the number of protons in an atom is equal to the atomic number of the element. S ince hydrogen's atomic number is 1, it has one proton.
I hope that's help !
Answer:1
Explanation:
hydrogen only has 1
b. Carbon is ranked seventeenth in abundance in Earth's crust.
c. Carbon is readily found combined and uncombined in nature.
d. Carbon is found in all living matter and in common fuels including coal.
Answers
All the statements are true about carbon except option a. Carbon is not a major component of inorganic molecules.
What is carbon?
Carbon is 6th element in periodic table. It is in 14th group and is a non-metal or gas. Carbon is present in all living matter and in common fuels including coal.
Carbon can be readily found in combined or non-combined state. Carbon is the major component of organic molecules and not that of inorganic molecules.
Organic molecules are hydrocarbons or their derivatives whose backbone is carbon chain. Therefore, option a is not true about carbon.
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