Answer:
The Sun is the major source of energy for organisms and the ecosystems.
Explanation:
Answer:
lower than the atmospheric pressure
Explanation:
An eudiometer have a graduated glass tube , where the mixture of the gases react with the electric spark , which helps to measure the change in the volume of the gases , during the process of the chemical reaction .
From the question ,
when the water level in the eudiometer is below that in the cylinder , then , the pressure in the eudiometer will be lower than the pressure of the atmosphere .
Answer:
The answer to your question is below
Explanation:
Sodium hydroxide (NaOH): 39 g/mol
Na = 23 O = 16 H =1 MM = 23 + 15 + 1 = 39
Water (H2O): 18 g/mol
H =1 O = 16 MM = 1 x 2 + 16 = 2 + 15 = 18
Glucose (C6H12O6): 180 g/mol
C = 12 H = 1 O = 16 MM = 12 x 6 + 12 x 1 + 16 x 6 = 72 + 12 + 96 = 180
Calcium sulfate (CaSO4): 136 g/mol
Ca = 40 S = 32 O = 16 MM = 40 + 32 + 16x4 = 40 + 32 + 64 = 136
Magnesium phosphate (Mg3(PO4)2): 264 g/mol
Mg = 24 P = 31 O = 16 MM = 24 x 3 + 31x2 + 16 x 8 = 72 + 64
+ 128 = 264
Mass of medicinal agent taken = 1.2 g
the volume is 60 mL
Specific gravity = 1.20
So the mass of solution = specific gravity X volume = 1.20 * 60 = 72g
Now if we have increased the volume by 0.2 so the new volume = 60.2
New mass = 72 + 1.2 = 73.2
Specific gravity = mass / volume = 73.2 / 60.2 = 1.22 g/mL
Answer:In determining the energy of activation, why was it prudent to run the slowest trial done at room temperature in the hot water bath and the fastest trial done at room temperature in the cold water bath?
Explanation: