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zysi [14]
2 years ago
8

Which of the following elements is the most reactive? potassium, lithium sodium, or rubidium

Chemistry
2 answers:
posledela2 years ago
4 0

Answer:

rubidium

Explanation:

i took the test and this answer was correct

Alex17521 [72]2 years ago
3 0

Answer:

Potassium

Explanation:

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Answer:

Its molecules are made up of 60 carbon atoms joined together by strong covalent bonds. Molecules of C 60 are spherical. There are weak intermolecular forces between molecules of buckminsterfullerene. These need little energy to overcome, so buckminsterfullerene is slippery and has a low melting point.

Explanation:

5 0
3 years ago
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Calculate the pH for the following solutions and indicate whether each solution is acidic or basic.
Nadya [2.5K]
The answer would for sure be 178 because acid & base make that amount so yea!! I’m talllyyy right
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2 years ago
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Design an invitation you could use to calculate the density of a penny
Nataliya [291]
Firstly, the density of any substance is represented by the mass (amount of matter) as divided by the volume(amount of space). According to external websites, the mass of a penny is 2.5 grams.However, the volume of a penny is .35cm to the power of 3 (due to the thickness of the penny being extremely minimal.Thus the amount of density is extremely little). Therefore, the density of a penny is 0.875 g/cm cubed (dimensional analysis).As for an invention that could be used, that is possible with the usage of a series of measurements that can both calculate mass and volume and directly allocate that to attain density
7 0
3 years ago
A certain isotope has 53 protons 78 neutrons and 53 electrons. What is its atomic number? What is the mass number of this atom?
statuscvo [17]

Answer:

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  2. 131g
  3. Iodine
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Explanation:

atomic no. = no. of protons

= 53 proton

mass = no. of protons + no. of

neutrons

= 53 + 78

= 131

5 0
3 years ago
In the diagram, which letter represents the energy of the products?
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D

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