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Advocard [28]
4 years ago
14

Table salt is insoluble in water. true or false

Chemistry
2 answers:
Zielflug [23.3K]4 years ago
7 0

Answer:

False. It is soluble in water.

Explanation:

Angelina_Jolie [31]4 years ago
5 0

Answer:false?

Explanation:

because isn’t salt sodium

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In the three-dimensional structure of methane, ch4, the hydrogen atoms attached to a carbon atom are aligned ________. in the th
Nikitich [7]
Answer:
            In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.

Explanation:
                   In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.

4 0
3 years ago
Substance being reduced?​
lana [24]

Answer:

Ni^{2+}

Explanation:

From the equation attached , Ni^{2+} is reduced. This is because reduction is equivalent to decrease in the oxidation number. In the equation , The oxidation number of Ni is reduced from +2 to 0.

NB, The oxidation number of a neutral atom is zero

4 0
4 years ago
When a gas is dissolved in a liquid, what happens when the pressure increases?<br>​
erik [133]

Answer: B, the gas is being squeezed out of the liquid.

Explanation: The gas does not want to be trapped inside of the liquid, so it is trying to force it’s way out. Therefore creating more pressure in the container or whatever the liquid is being held in.

8 0
3 years ago
A laser is emitting photons with a wavelength of 639.8 nm. What is the energy for 1 mole of these photons? For Planck's constant
PSYCHO15rus [73]

Answer:

The energy for 1 mole of these photons is E = 31 × 10^{-23} \frac{KJ}{mol}  

Explanation:

Given data

Wavelength \lambda = 639.8 × 10^{-9} m

Plank constant h = 6.626 × 10^{-34} J sec

Speed of light c = 3 × 10^{8} meter per second

We know that Energy  of a photon is given by

E = \frac{h c}{\lambda}

Value of ( h c ) = 6.626 × 10^{-34}  × 3 × 10^{8} = 19.878 × 10^{-26}

\lambda = 639.8 × 10^{-9} m

Now Energy  of a photon

E =( \frac{19.878}{639.8}) 10^{-17}

E = 0.031 × 10^{-17} Joule per mole

E = 31 × 10^{-23} \frac{KJ}{mol}  

Therefore the energy for 1 mole of these photons is E = 31 × 10^{-23} \frac{KJ}{mol}  

4 0
4 years ago
Most solids will not float in water because they​
Karo-lina-s [1.5K]

Answer:

Because most solids are denser than water.

Explanation:

3 0
4 years ago
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