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OLga [1]
3 years ago
13

Which of the following increases as you move up a column of the periodic table?

Chemistry
1 answer:
luda_lava [24]3 years ago
6 0

Answer:

electronegativity increases

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How many atoms of oxygen (o)are present 2naOH+H2SO4 2H2O+Na2SO4
Dafna1 [17]

Answer:

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6 0
3 years ago
For which compound does 0.256 mole weigh 12.8 g?
mylen [45]
Number of moles = \frac{mass (g)}{Molar mass}
so to calculate molar mass (Molecular weight of compound):
Molecular weight = \frac{mass (g)}{number of moles}
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Now we calculate molecular weight of each compound in choices:
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b) CO₂ = 44
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6 0
3 years ago
A pressure cooker contains 5.68 L of air at a temperature of 390 4K if the absolute pressure of the air in the pressure cooker i
Cloud [144]

Answer:

3.59x10⁻⁴ mol

Explanation:

Assuming ideal behaviour we can solve this problem by using the<em> PV=nRT formula</em>, where:

  • P = 205 Pa
  • V = 5.68 L
  • n = ?
  • R = 8314.46 Pa·L·mol⁻¹·K⁻¹
  • T = 390.4 K

We<u> input the data given by the problem</u>:

  • 205  Pa * 5.68 L = n * 8314.46 Pa·L·mol⁻¹·K⁻¹ * 390.4 K

And <u>solve for n</u>:

  • n = 3.59x10⁻⁴ mol
6 0
3 years ago
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