Answer:
biochemist is both life science and a chemical . it explores the chemistry of the living organisms and the molecular basis for the changes occurring in the living organisms. it uses the method of chemistry . BIOCHEMIST has become the foundation for understanding all biological processes
Answer:
47.74 g
Explanation:
Given data:
Formula units of SrF₂ = 2.31 ×0²³
Mass of SrF₂ = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ formula units
2.31 ×0²³formula units × 1 mol / 6.022 × 10²³ formula units
0.38 mol
Mass of SrF₂:
Mass = number of moles × molar mass
Mass = 0.38 mol × 125.62 g/mol
Mass = 47.74 g
Thermal, think thermometer and heat.
(10)an object will continue to travel at a constant speed unless acted by an unbalanced force according to newtons second law every force acted on a body has a equal and opposite reaction so the speed and the direction of the object will change.
(9) balanced force (i think so )
hope this is what you needed the 10th one is for understanding you can shorten it after reading and i think what i have written is not wrong :P:P:P;p:P:):):):D=) for the ninth one i am not sure but i think so :P:)=)
When water at 50 C is added to ice at -12 C, heat is transferred from hot water to ice.
- Heat given out by water = Heat absorbed by ice
Calculating the heat released by hot water:
ΔT
Calculating heat absorbed by 16 g of ice: Ice at is converted to ice at and then ice at to water at
ΔT +
+
q = 405.12 J +5336.8 J =5741.92 J
- Heat given out by water = Heat absorbed by ice
-(
m = 27.4 g
Therefore, 27.4 g water at must be added to 16 g of ice at to convert to liquid water at