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ICE Princess25 [194]
3 years ago
6

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
7 0
Independent is the time elapsed dependent is number of bites
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What is the oxidation number of neon
vredina [299]

Answer:

Electron Configuration and Oxidation States of Neon. Electron configuration of Neon is [He] 2s2 2p6. Possible oxidation states are 0. so the answer is 0.

Explanation:

7 0
4 years ago
What ion is formed when an atom of mercury loses two electrons
andrezito [222]

Answer:

magnesium ion  Hg2+ cation is formed

6 0
3 years ago
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At which of the following temperatures is the average kinetic energy of the molecules of a substance the least? 23.2 °C 35.2 °C
svp [43]
At 15.2°C. Kinetic energy of molecules highly depends on the temperature — the warmer it is, the faster the molecules will move, especially in fluids (gases and liquids). If we consider that the formula for average kinetic energy of molecules is:

Ek = 3/2*k*T where k is Boltzmanns constant and 3/2 is, well, 3/2, kinetic energy of molecules really only depends on the temperature.
7 0
4 years ago
Number the steps for balancing equations:
adelina 88 [10]

Answer:

identify the atoms on each side.

Count the atoms on each side.

Use coefficients to increase the atoms on each side.

Check to make sure you have the same number of each type of atom on each side.

Explanation:

The concept behind balancing chemical equations is to ensure that they comply with the law of conservation of matter. This helps to make chemical equations quantitatively meaningful.

  • First, identify the atoms on each side of the expression.
  • Then count these atoms.
  • Assign appropriate numeric coefficient to the species.
  • Then check to make sure there are equal number of each type of atoms on each side.

The subscript of the formula must not be changed in an attempt to balance a chemical equation.

4 0
3 years ago
Unknown halogen X2 was added to each of two test tubes which contained aqueous NaCl and aqueous NaI, respectively. When hexane w
weeeeeb [17]

Answer:

Br_2

Explanation:

The compound X_2 is Br_2.

The reaction included are:

Br_2+NaCl--> No\ reaction  (because  bromine is less reactive than chlorine)

But , because of hexane the solution get dilute and its color changes to orange.

Now, NaI is added and we know Br is more reactive than I.

Therefore it replace it.

Reaction: Br_2+NaI-->NaBr+I_2

Purple color develop due to formation of Iodine.

7 0
3 years ago
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