The heat from your hand would be absorbed by the (assumed) colder flask, since an endothermic reaction means that the reaction requires an absorption of heat as opposed to an exothermic reaction, which releases heat.
Answer:
Milk, which when not subjected to temperature, is a homogeneous mixture. This is because- the various components of pure milk, which are the nutrients present in it, don't form separate layers in it and hence can’t be separated by any physical method.
But when milk is subjected to external factors, such as temperature, the milk fat no more remains dissolved in the milk but instead can be seen as a layer on the top-either as a white solid layer which is called as the cream or as yellow droplets. The two layers can be separated by physical means and hence making milk a heterogeneous mixture.
So the conclusion is that milk is a homogeneous mixture by default.
Explanation:
Answer: A. There are more reactants than products at equilibrium.
Explanation:
Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as 
For a general chemical reaction:

The expression for
is written as:
![K_{eq}=\frac{[C]^c[D]^d}{[A]^a[B]^b}](https://tex.z-dn.net/?f=K_%7Beq%7D%3D%5Cfrac%7B%5BC%5D%5Ec%5BD%5D%5Ed%7D%7B%5BA%5D%5Ea%5BB%5D%5Eb%7D)
There are 3 conditions:
When
; the reaction is product favored.
When
; the reaction is reactant favored.
When
; the reaction is in equilibrium.
From the above expression, the equilirbium constant is directly dependent on product concentration. Thus, more is the concentration of product, more will be the equilibrium constant.
The values of
less than 1 , means the reactant are more than the products.
Make four columns place differences for whatever you are comparing and similarities in one(this is for a three compared thing)
<u>Answer:</u> The given statement is true.
<u>Explanation:</u>
pH is defined as the negative logarithm of hydrogen ion concentration present in the solution.
Mathematically,
![pH=-\log[H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH%5E%2B%5D)
Putting values in above equation, we get:
![6=-\log[H^+]](https://tex.z-dn.net/?f=6%3D-%5Clog%5BH%5E%2B%5D)
![[H^+]=10^{-6}M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D10%5E%7B-6%7DM)
Putting values in above equation, we get:
![9=-\log[H^+]](https://tex.z-dn.net/?f=9%3D-%5Clog%5BH%5E%2B%5D)
![[H^+]=10^{-9}M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D10%5E%7B-9%7DM)
Taking the ratio of hydrogen ion for both the pH:
![\frac{[H^+]_{pH=6}}{[H^+]_{pH=9}}=\frac{10^{-6}}{10^{-9}}\\\\\frac{[H^+]_{pH=6}}{[H^+]_{pH=9}}=10^3](https://tex.z-dn.net/?f=%5Cfrac%7B%5BH%5E%2B%5D_%7BpH%3D6%7D%7D%7B%5BH%5E%2B%5D_%7BpH%3D9%7D%7D%3D%5Cfrac%7B10%5E%7B-6%7D%7D%7B10%5E%7B-9%7D%7D%5C%5C%5C%5C%5Cfrac%7B%5BH%5E%2B%5D_%7BpH%3D6%7D%7D%7B%5BH%5E%2B%5D_%7BpH%3D9%7D%7D%3D10%5E3)
![[H^+]_{pH=6}=1000\times [H^+]_{pH=9}](https://tex.z-dn.net/?f=%5BH%5E%2B%5D_%7BpH%3D6%7D%3D1000%5Ctimes%20%5BH%5E%2B%5D_%7BpH%3D9%7D)
Hence, the given statement is true.