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Makovka662 [10]
3 years ago
7

If there are two elements in the same group, what is the same about them? Atomic mass, or they have the same number of valence e

lectrons? (There are other options but i seriously doubt that they are correct)
Chemistry
1 answer:
Mila [183]3 years ago
8 0

Answer:

Same number of valence electrons

Explanation:

The way that the periodic table is designed is so that all elements in the same group will have the same number of valence electrons. This is because elements can have the same number of valence electrons despite having different totals of electrons, because the valence electrons can reside in any valence shell.

Atomic mass changes for every element, and the elements get heavier the further down the table you go, so it is not atomic mass.

Hope this helped!

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What would you multiply "moles of oxygen" by to get the units "grams of oxygen"?
photoshop1234 [79]

Answer:

AM

Explanation:

to go from moles to grams you multiply by the Atomic Mass or Molar Mass (Atomic Mass for an element and Molar Mass for a compound).

The formula is:

Mass = moles * MM

6 0
3 years ago
Calculate the density for a rectangular block using the following measurements: Length = 10 cm, Width = 1.1 cm, Height = 15 cm,
Ksivusya [100]

Answer:

0.40 g/cm3

Explanation:

density = mass / volume.

mass = 65.2 grams

volume = 10*1.1*15=165 cm3

so density = 65.2/165=0.40 g/cm3

3 0
3 years ago
What product(s) are formed during the complete combustion reaction that occurs when methane (CH4) and molecular oxygen (O2) reac
Vilka [71]

Answer: CO2 and H2O

Explanation: I already took the test it's right

3 0
3 years ago
Balance the following equation<br><br> CH₄ + O₂ → CO₂ + H₂O
nalin [4]

Answer:

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Explanation:

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3 0
3 years ago
Molar mass of c16h19n305s
Masja [62]

Answer:

365.212

Explanation:

According to the given situation, the calculation of molar mass is shown below:-

Data provided

c_{16}\ h_{19}\ n_3\ o_5\ S

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Therefore for determining the molar mass we simply solve the above equation.

So, the correct answer is 365.212

5 0
4 years ago
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