There are 3 different answers you can pick from. no coefficient 2 3

Sloan [31]

Wavelength is the distance between crests of a wave. Wavelength can be calculated by the speed of light divided by frequency

3 0

3 years ago

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Which of the following is a diatomic molecule? a. ca2- b. n2 c. kcl d. mgcl2

ipn [44]

N2 is a diatomic molecule as it is composed of 2 atoms of the same element, covalently bonded to each other in this case Nitrogen.

8 0

3 years ago

The solubility of BaCO3(s) in water at a certain temperature is 4.4 10–5 mol/L. Calculate the value of Ksp for BaCO3(s) at this

azamat

Answer : The value of $K_{sp}$ for $BaCO_3$ is $19.36\times 10^{-10}mole^2/L^2$ .

Solution : Given,

Solubility of $BaCO_3$ in water = $4.4\times 10^{-5}mole/L$

The barium carbonate is insoluble in water, that means when we are adding water then the result is the formation of an equilibrium reaction between the dissolved ions and undissolved solid.

The equilibrium equation is,

$BaCO_3\rightleftharpoons Ba^{2+}+CO^{2-}_3$

Initially - 0 0

At equilibrium - s s

The Solubility product will be equal to,

$K_{sp}=[Ba^{2+}][CO^{2-}_3]$

$K_{sp}=s\times s=s^2$

$[Ba^{2+}]=[CO^{2-}_3]=s=4.4\times 10^{-5}mole/L$

Now put all the given values in this expression, we get the value of solubility constant.

$K_{sp}=(4.4\times 10^{-5}mole/L)^2=19.36\times 10^{-10}mole^2/L^2$

Therefore, the value of $K_{sp}$ for $BaCO_3$ is $19.36\times 10^{-10}mole^2/L^2$ .

3 0

3 years ago

Identify the Lewis acid in this balanced equation: Ag+ NH3 Ag(NH3)2+

Tanya [424]

Answer: Ag+

Explanation: Just did it

8 0

3 years ago

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Sometimes human actions can have both positive and negative environmental impacts.

Rama09 [41]

Besides the negative environmental impact of dams there are also many positive environmental impact of dams. Dams help to prevent flooding and the water can be stored to provide energy like the hydro electric power

Explanation:

When a dam is constructed in a area whenever there is drought in the areas the stored water in the dam will be helpful for irrigation and drinking purpose. The water stored are made to fall on the turbines and produce hydro electric power

Dams even help to prevent floods excess of water will be stored in the dam and hence the effect of flooding will be reduced and the water stored can be used efficiently

These are some of the positive environmental impacts of the dam

3 0

3 years ago