Question 9 (2 points)Calcium oxalate is an active ingredient in witch hazel. How many moles of CaC204 are in 50.0 g?
Оа
Ob
Ос
0.39 moles
6405.00 moles
128.10 g
2.56 moles
Review Answers
Answers
Answer:
0.39 moles
Explanation:
To find how many moles are in 50.0 g of CaC₂O₄ you divide the grams of the sample by the molar mass of the compound;
=0.39 mol
The grams cancel out and you are left with moles!
I hope this help ^-^
Related Questions
Humans have developed different cat breeds using the process of selective breeding. How is selective breeding different than evolution by natural selection?A.Selective breeding is driven by the environment, but natural selection is driven by humans.B.Selective breeding is driven by humans, while natural selection is driven by the environment.C.Selective breeding selects for favorable traits, but natural selection does not.D.Natural selection selects for favorable traits, but selective breeding does not.
How many moles are in 2.0 grams of Na?
Sediments are almost always deposited in flat layers. Does it appear that forces in the Earth affected the rock layers in this region? What clues do you have?
Describe two ways that thermal energy transfer in earth changes the land
Answers
b. less machinery=hiring workers=jobs.
c. If farm machinery broke in the field. repairing is very inconvenient. There will be no trailer to pull it away. This is a disadvantage of machinery.
Answers
Answers
Answer: Option (D) is the correct answer.
Explanation:
General formula of an alkyne is .
Suffix "yne" in the name of a compound represents that there is a triple bond present in the compound.
So, a molecule of propyne will have three carbon atoms, four hydrogen atoms and a triple bond. Therefore, there wll be 6 sigma bonds and 2 pi bonds in a propyne molecule.
The last photo because its molecular formula is C3H4.
Answers
Answer:
Explanation:
It is unchanged.
Explanation:
This is an excerpt from my lesson in science:
In an ionic compound, every ion is attracted to ions of opposite charge that surround it. It is attracted to ions above, below, and to all sides. The pattern formed by the ions remains the same no matter what the size of the crystal.
In a single grain of salt, the crystal pattern extends for millions of ions in every direction. Many crystals of ionic compounds are hard and brittle due to the strength of their ionic bonds and the attractions among all the ions.
Hence, it is unchanged. (Brainliest Please and 5 stars)
Answer:
It is unchanged
Explanation: gradpoint
The pattern formed by the ions remains the same no matter what the size of the crystal.
Answers
Answers
Ionic bond is formed when there is a transfer of electron(s) from metallic atom to non-metallic atom.
The correct answer to the question is Option B. A bond resulting from the transfer of 1 or more electrons
Ionic bond exist between a metal and a nonmetal.
In this bonding, the metal losses it's valence electron to form a stable metallic ion, while the nonmetal receives the electron from the metal to form a stable nonmetallic ion which results in the formation of an ionic compound.
With the above information, we can see that ionic bond involves a transfer of electron(s).
Thus, the correct answer to the question is Option B. A bond resulting from the transfer of 1 or more electrons.
See attachment image
Lean more: brainly.com/question/11527546
Answer: B
Explanation:
Ionic bonding is the complete transfer of electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.