Answer:
The most common chemical properties are flammability and reactivity. Flammability looks very similar to a word that many of you have seen before: flame. In this case, flammability is the ability of a substance to burn or better yet, how easily something burns.
Explanation:
Mixtures are of 2 types.
1) Homogeneous mixture : In this type of mixture, the components of the mixture are present in the same phase. For example, Air. Air is a mixture of different gases which cannot be distinguished from each other.
2) Heterogeneous mixture : In this type pf mixture, 2 or more phases can be seen. The composition of the different components is not the same throughout the mixture.
Ex. mixture of oil and water. Here we can see 2 different phases one consisting of oil layer and the other made of water layer.
Salt water is a mixture of salt and water. Since salt is completely soluble in water, it creates a homogeneous mixture when mixed with water. We cannot distinguish salt and water once they are mixed.
To get fresh water from the salt water in the ocean, we can set up a simple distillation unit . In this, the salt water is heated to its boiling point and the vapors thus formed are allowed to cool which condense and create liquid water. This can be used as fresh water.
Answer:
12.96 seconds
Explanation:
Assuming the reaction follows a first order
Rate = K[NOBr] = change in concentration of NOBr/time
K = 0.556 L mol^-1 s^-1
Change in concentration of NOBr = 0.32M - 0.039M = 0.281M
0.281/t = 0.556×0.039
t = 0.281/0.021684 = 12.96 seconds
Answer:
The mass of the silver block is 95.52 grams.
Explanation:
Heat lost by silver will be equal to heat gained by the water
Mass of silver=
Specific heat capacity of silver =
Initial temperature of the silver =
Final temperature of a silver = =
Mass of water=
Specific heat capacity of water=
Initial temperature of the water =
Final temperature of water =
On substituting all values:
we get,
The mass of the silver block is 95.52 grams.
3n of force North. Since the 12 cancel the other 12 out.