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Vilka [71]
3 years ago
9

On left, C l with 2 black dots each above, left, and below and 1 black dot right. On the right, C l with 2 black dots each above

, right, and below and 1 black dot left.
Chlorine, which is used to clean swimming pools, exists as two chlorine atoms covalently bonded to each other.


How many valence electrons does one chlorine (Cl) atom have?
Chemistry
2 answers:
notka56 [123]3 years ago
8 0

Answer: 7

Explanation: group 7 on periodic table - took exam

laila [671]3 years ago
5 0

Answer:

Chlorine has seven valence electrons

Explanation:

The dot structure of chlorine was just described in the question. The two dots above, below and by the left are three lone pairs making a total of six electrons. There is another one black dot indicating one electron.

This one electron on both chlorine atoms combine to form the chlorine molecule Cl2.

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Is washing your hands with soap a physical or chemical change.
SVETLANKA909090 [29]

Answer:

I think that's a physical change since nothing is getting it's properties changed.

Explanation:

a chemical change usually changes the properties and cannot be changed back, this is simply washing your hands so I would guess that a physical change. think of like putting water on paper, the properties aren't changed you just have a paper with water on it now and can be easily dried.

4 0
3 years ago
85.4 g of chlorine reacts completely according to the following reaction: P4 (s) + 6 Cl2, (g) 4PC13 (I)
uysha [10]

Explanation:

hope the picture make sense :)

5 0
3 years ago
Please ignore my answers because they are wrong.
earnstyle [38]

Answer:

The wavelength of the radio wave is 3.003 m.

The energy of the radio wave is 6.6194\times 10^{-26} J.

Explanation:

Frequency of the radio waves, ν = 99.9 MHz = 99.9\times 10^6 Hz

Wavelength and frequency are related to each other by realtion:

\lambda =\frac{c}{\nu }

\lambda = Wavelength of the wave

c = speed of the light

ν = Frequency of the wave

\lambda =\frac{3\times 10^8 m/s}{99.9\times 10^6 s^{-1}}=3.003 m

The wavelength of the radio wave is 3.003 m.

The energy of the electromagnetic wave is given by Planck's equation:

E=h\times \nu

h = Planck's constant = 6.626\times 10^{-34} Js

The energy of the radio wave with 99.9 MHz frequency will be:

E=6.626\times 10^{-34} Js\times 99.9\times 10^6 s^{-1}

E = 6.6194\times 10^{-26} J

The energy of the radio wave is 6.6194\times 10^{-26} J.

4 0
3 years ago
Given that NASA needs 151,200 g of Oxygen (O2) per person for a mission, how many grams of water (H2O) does NASA need to ship to
IgorC [24]

this is so ez,

ok so here what u'll do after u balance the equation:

1. convert grams of oxygen to moles of oxygen.

2. convert moles of oxygen to moles of water

3. convert moles of water to grams of water.

4. bOOm... that's your answer

as follows:

2H2O(l)===>2H2(g)+O2(g)

1. 151200(g)/16(g/mol)=9540 moles of O2

2. 9450 moles of O2 × 2 moles of H2O =18900 moles of H2O

3. 18900 moles of H2O × 10g/mol = 189000g of H2O is required.

6 0
4 years ago
I’m so lost please help
Vadim26 [7]

d= 8/10 so yah that was a guess

8 0
3 years ago
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