Which element is classified as an alkali metal?
Rb
Sr
Zr
Cl
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Alkali metals are known as the group 1 elements.
When we know this, we just have to look to group 1 of the periodic table.
Rb (Rubidium) is in group 1; it is classified as an alkali metal.
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Answer:
A
Explanation:
on edge
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Molecular bonding cannot occur without..electrons, sunlight, protons, or neutrons?
You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 69 quibs of a substance called skvarnick. You can trade this Skvarnick for gold coins, but the vendors all measure skvarnick units of sleps; not quibs. 9 sleps is equal to 6 quibs. If you have 14 quibs of skvarnick, how many sleps do you have? Round your answer to the nearest tenth (one decimal place). Type only the number; not the number and unit.
Enter the molecular formula for butane, C4H10express your answer as a chemical formula
The characteristic temperature at which a pure solid changes to a liquid is its ______ point.
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Answer:
2.05 x 10⁸ uL
205000000 uL
Explanation:
Step 1: Find the conversion
1 liter (L) = 1 x 10⁶ microliters (uL)
Step 2: Set up dimensional analysis
Step 3: Multiply and cancel out units
Liters and Liter cancel out.
We are left with uL
205(1 x 10⁶) = 2.05 x 10⁸ uL or 205000000 uL
Answer: 205000000 microliter
Hope this helps!
b. atomic mass.
c. molecular size.
d. molecular mass.
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A base is an H⁺ acceptor, whereas an acid is an H⁺ donor. Acidic chemicals are typically recognized by their sour flavor.
What is acid-base theory?
Any hydrogen which contains a compound capable of giving a proton to another material is described as an acid. An ion and molecule that can receive a hydrogen ion from that of an acid is known as a base. Acidic chemicals are typically recognized by their sour flavor.
In essence, an acid is a substance that has the capacity to donate an H⁺ ion plus maintain its energetic favorability even after losing an H⁺ ion. It is well known that acids may change blue litmus into red. Bases, on the other hand, have a slick consistency and a bitter flavor. A base is an H⁺ acceptor, whereas an acid is an H⁺ donor.
Therefore, a base is an H⁺ acceptor, whereas an acid is an H⁺ donor.
To learn more about acid-base theory, here:
#SPJ6
Answers
Answer:
P₂ = 2.19 atm
Explanation:
Given data:
Initial volume = 1.5 L
Initial pressure =1 atm
Initial temperature = 273K
Final temperature = 26°C (26+273 = 299 K)
Final volume = 0.75 L
Final pressure = ?
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₂ = P₁V₁ T₂/ T₁ V₂
P₂ = 1 atm × 1.5 L × 299 K / 273 K × 0.75 L
P₂ = 448.5 atm .L. K / 204.75 K.L
P₂ = 2.19 atm
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2.0 MOL is the correct answer I believe
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Carbon is a chemicalelement with a chemical symbol "C". It has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6electrons. Since carbon is in the second row (or second period), it has 2 electron orbits. Use the clay to make your protons and neutrons in the nucleus.
However, some factors do influence its durability, like its matrix. Furthermore, the intense use of composites and environmental factors could affect its durability and potential applications.
Difference between carbon fiber and iron
- Carbonfiber is five-times stronger than iron( FE ) and twice as stiff. Though carbon fiber is stronger and stiffer than Iron (Fe) it is lighter than steel; making it the ideal manufacturing material for many parts. These are just a few reasons why carbon fiber is favored by engineers and designers for manufacturing.
- Steel with more carbon is harder and stronger than pure iron, but it also breaks more easily (brittle).
Read more about carbon fibre: