Answer:
223.6539
Explanation:
1 mole is equal to 1 moles KCl, or 74.5513 grams
Answer:
(i) specific heat
(ii) latent heat of vaporization
(iii) latent heat of fusion
Explanation:
i. Q = mcΔT; identify c.
Here, Q is heat, m is the mass, c is the specific heat and ΔT is the change in temperature.
The amount of heat required to raise the temperature of substance of mass 1 kg by 1 degree C is known as the specific heat.
ii. Q = mLvapor; identify Lvapor
Here, Q is the heat, m is the mass and L is the latent heat of vaporization.
The amount of heat required to convert the 1 kg liquid into 1 kg vapor at constant temperature.
iii. Q = mLfusion; identify Lfusion
Here, Q is the heat, m is the mass and L is the latent heat of fusion.
Here, Q is the heat, m is the mass and L is the latent heat of vaporization.
The amount of heat required to convert the 1 kg solid into 1 kg liquid at constant temperature.
[
] value of soft drink is 0.0001mol/l when given pH is 4.
Given:
pH = 4
Needs to find: [
]
Formula to find: pH=−log
[
]
We can put the values of pH in above formula as,
pH=−log
[
]
4 =−log
[
]
To calculate hydonium ion concentration, formula is as follows;
[
] = 
[
] =
= 0.0001mol/l
[
] value of soft drink is 0.0001mol/l
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Answer and Explanation:
As the temperature of the substances increases, the average energy of the molecules increases, and average energy of attraction between the molecules decreases consequently intermolecular spacing between the molecules increases. As a result, a substance change in succession from gas to liquid to solid.
Electronnegativity increase because the number of charges on the nucleus increases. Which attracts the bonding amount of electrons more.