Answer:
Mass of CaCl2 that would dissolve is 24.64g.
Explanation:
Explanation is contained in the picture attached.
Because cl atoms are bonded with hydrogen. hydrogen bond is very strong bond
Answer:
a) Carbon.
Explanation:
The organic chemistry is normally based on the chemical elements Carbon, Hydrogen,oxygen, sulphur and Nitrogen. Sometimes a mixture or compound of one or more of these will be found such as (carbohydrates, fats, proteins). The varieties of organic molecules are based on these atoms, with carbon as the skeleton of the organic molecule.
Hence out of the four options given we find that though nitrogen, sulphur are also common in organic the most common is the first option
a) Carbon.
Answer:
The initial temperature of the water is -75.08 K.
Explanation:
Given that,
Mass of water, m = 27 g
Heat absorbed, Q = 1,5000 J
Final temperature of water, T₂ = 57.7 K
The specific heat of water is 4.184 J/g-K
We know that,
Put all the values,
So, the initial temperature of the water is -75.08 K.
Answer: B- Chemical bonds are formed. Energy is released in the form of heat.
Explanation: I hoped that helped !
