Why is the protist kingdom sometimes called the "odds and ends" kingdom?
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Related Questions
Generally, which of the three families of elements (metals, nonmetals, or inert gases) has the least tendency to form ionic bonds?
__________ What is the value of the activation energy for the forward reaction? Be sure to include theappropriate sign.
These two compounds are in the liquid phase at 293 K a. Br₂ and Hg b. Cl2 and F2 c. NH4^{+} and H₃O^{+} d. Fe and Co e. Diamond and graphite
What is the correct IUPAC name for the compound NH4Cl?A. nitrogen chlorideB. nitrogen chlorateC. ammonium chlorideD. ammonium chlorate
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Answer:
Explanation:
A physical property is a property that can be observed without changing the composition.
Some examples of physical properties are:
- Color
- Density
- Length
- Mass
- Smell
- Temperature
- Boiling Point
- Hardness
Now, let's examine our answer choices.
Choice A: Sugar is white in color
- The property is color, which is a physical property.
Choice B: Iron is more dense than aluminum
- The property is density, which is a physical property.
Choice C: Diamond is harder than graphite.
- The property is hardness, which is a physical property.
Since all three choices depict physical properties, the best choice is D. All of the above.
Answer:
D
Explanation:
All explain physical no chemical examples were given
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∴
=
= 0.0147 mol
1 : 1
∴
Mass = Molar Mass * Mol
∴
= 179 g/mol * 0.0147 mol
= 2.63 g
B. Intrusive
C. Molten
D. Cooled
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Answer:
molten hi i eat apples and bananas
b. bauxite
c. iron
d. timber
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All the following are examples of minerals, except timber.
The correct option is d, timber.
What are minerals?
Minerals are solid chemical compounds that have fixed or definite chemical compositions.
Some minerals are calcium, phosphorus, bauxite, iron etc.
Our body needs a very little amount of minerals for the boy's growth.
Timber is wood, which is not a mineral.
Thus, the correct option is d. timber.
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Answer: D. Timber
Explanation:
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Redox reaction: MnO₂ + 4H⁺ + 2Cl⁻ → Mn²⁺ + 2H₂O + Cl₂.
Cl⁻ lost one electron (two Cl⁻ lost two electrons) and change oxidation number to zero, so Cl⁻ is reducing reagent.
Mn change oxidation number from + 4 to +2, Mn is oxidizing reagent.
Hydrogen don't change oxidation number.
The answer is Cl- or A. Hope it helps
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Final answer:
The Periodic Table of Elements lists over 100 known elements, providing critical information such as the element's atomic number, symbol, name, and atomic mass. Elements are grouped based on their chemical properties and electron configuration.
Explanation:
Over 100 existing elements are systematically organized and displayed on the Periodic Table of Elements. Each box on the Periodic Table represents a different element and provides critical information such as the element's atomic number, symbol, name, and atomic mass. Elements are grouped together based on their chemical properties and electron configuration, which is a representation of the organization of electrons around the nucleus.
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Final answer:
Over a hundred elements, both naturally occurring and experimentally discovered, are listed and classified on the Periodic Table of the Elements. They are sorted by atomic number, and those with similar properties and valence shells are grouped into columns and rows respectively.
Explanation:
Over 100 existing elements are listed and classified on the Periodic Table of the Elements. This list of elements is arranged in ascending order of atomic number, which is the number of protons in each nucleus. The periodic table not only identifies the chemical symbol, atomic number, and mass number of each element but also groups elements according to their propensity to react with other elements.
It's important to note that elements found on the periodic table have an equal number of protons and electrons. However, the number of protons and neutrons may not always be equal across all elements. In addition to the 92 naturally occurring elements, there are several larger, unstable elements that have been discovered experimentally
Aside from organizing elements according to their atomic number, the periodic table is also structured in a way that elements with similar properties compose columns in the table, while elements with the same number of valence shells compose rows, making it an essential tool for understanding and predicting chemical behaviors.
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