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I am Lyosha [343]

3 years ago

5

Please help chemistry timed test

2 answers:

Artist 52 [7]3 years ago

8 0

Answer:

Barrium nucleus has 56 protons and 137−56=81 neutrons.

Atomic Mass 137.327 atomic mass units

Number of Protons 56

Number of Neutrons 81

Number of Electrons 56

lakkis [162]3 years ago

7 0

Answer:

54

Barium atomic number is 56, this means that it has 56 protons in its nucleus and put it as a period 6 element. an uncharged barium atom would have 56 electron also. However as a group 2 element barium easily loses 2 electron to form the +2 cation. the ions has 56-2=54

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SOLVE The density of a gas is 0.68 g/mL. What amount of space would 23.8 g of this gas occupy?

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Hope this helps you

6 0

3 years ago

The gas phase decomposition of sulfuryl chloride at 600 K SO2Cl2(g)SO2(g) + Cl2(g) is first order in SO2Cl2. During one experime

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3 years ago