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Kitty [74]
3 years ago
9

Where is tenessine on the periodic table?

Chemistry
1 answer:
Alla [95]3 years ago
8 0
Tenessine used to be called Ununseptium, however since it was only recently regarded as an actual element and the existence of the element has now been proven, it ended up receiving the name Tenessine. The atomic number is 117 and is in a Halogen.
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This is because lithium has three protons

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_______ prohibits and punishes certain conduct for the benefit of society.
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How many valence electrons does magnesium have
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Legend says that archimedes, in determining whether or not the king's crown was made of pure gold, measured its volume by the wa
amm1812
Mass=volume x density
if we have mass and density we can calculate volume using the formula: volume=mass/density
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3 years ago
Nitrogen dioxide is used industrially to produce nitric acid, but it contributes to acid rain and photochemical smog. What volum
zhuklara [117]

Answer:

The volume of nitrogen oxide formed is 35.6L

Explanation:

The reaction of nitric acid with copper is:

Cu(s) + 4HNO₃ → Cu(NO₃)₂ + 2NO₂(g) + 2H₂O(l)

Moles of copper are:

4.95cm^3\frac{8.95g}{1cm^3} \frac{1mol}{63.55g} = 0.697 moles

Moles of nitric acid are:

230mL\frac{1.42g}{mL} \frac{68g}{100g} \frac{1mol}{63.01g}=3.52moles

As 1 mol of Cu reacts with 4 moles of HNO₃:

0.697 mol Cu × (4mol HNO₃ / 1mol Cu) = 2.79 moles of HNO₃ will react. That means Cu is limiting reactant.

Moles of NO₂ produced are:

0.697 mol Cu × (2mol NO₂ / 1mol Cu) = <em>1.394 moles of NO₂</em>

Using PV = nRT

<em>Where P is pressure (735torr / 760 = 0.967atm); n are moles (1.394mol); R is gas constant (0.082atmL/molK); T is temperature (28.2°C + 273.15 = 301.35K). </em>

Thus, volume is:

V = nRT / P

V = 1.394mol×0.082atmL/molK×301.35K / 0.967atm

V = 35.6L

<em>The volume of nitrogen oxide formed is 35.6L</em>

3 0
3 years ago
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