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Tomtit [17]
3 years ago
6

Does anyone know why electron affinity increases as going upward in the periodic table ​

Chemistry
1 answer:
kobusy [5.1K]3 years ago
6 0

Answer:

Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons.

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A student measures the mass of an 8 cm block of brown sugar to be 12.9 g. What is the density of
horrorfan [7]

Answer:

0.0025g/cm³

Explanation:

Given parameters:

Mass of the brown sugar = 12.9g

dimension of the sugar = 8cm

unknown:

density of the sugar = ?

Solution

Density is defined as the mass per unit volume of a substance. The expression is given below:

      Density = \frac{mass}{volume}

We know the mass of the substance but the volume is unknown:

Volume of the brown sugar = l x bx h = 8x8x8 = 512cm³

Density of the brown sugar = \frac{12.9}{512} = 0.0025g/cm³

8 0
3 years ago
A small gas cylinder of Helium can be used to fill many more balloons than would fit inside it. Explain how this works, in your
Fudgin [204]
<h2>Gas Molecules Move in Random Motion </h2>

Explanation:

  • According to the property of an ideal gas the volume occupied by the gas molecules themselves is negligible as compared to the volume occupied by the gas
  • The molecules of ideal gas obey Newton's laws of motion thus they move in random motion
  • According to the above statements we can conclude that Helium gas can fill many more balloons as compared to fit the baloons inside the cylinder because the particles of gas is free to move in random motion and can occupy more volume
6 0
3 years ago
Which of the following conditions explains Floridas risk of muck fires​
lina2011 [118]

Answer: They are started (usually in late winter/early spring in Florida) when buried decomposing vegetation spontaneously combusts or is ignited by lightning strikes. This happens during the dry season as the vegetation begins to dry out.

Explanation:

6 0
3 years ago
In a controlled scientific experiment,​
klemol [59]

Answer:

D

Explanation:

For It to be controlled more than one variable has to stay the same

8 0
3 years ago
How many grams of AgNO3 are needed to make 250 ml of a solution that is 0.135 M
myrzilka [38]

Answer:

( About ) 5.7 grams

Explanation:

Take a look at the attachment below for a proper explanation;

5 0
4 years ago
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