They are in free fall. In a vacuum, gravity causes all objects to fall at the same rate, and since they all are falling together. The astronauts and other objects appear to float when compared with the spacecraft.
Answer:
Covalent
Explanation:
Using an electronegativity chart, such as the attached one, you see that Nitrogen (N) has an electronegativity value of 3.0. Because both molecules are the same, 3.0-3.0=0. Therefore, because the electronegativity value difference is 0, the bond must be covalent.
Answer:
321.6 g/Mol
Explanation:
mass of solvent in kilograms = 90g/1000 = 0.09 Kg
Given that;
ΔTf = Kf . m . i
Where;
Kf = freezing point constant = 4.25 °C/Kg mol
m = molality of the solution
i = Van't Hoff factor = 1 (since the substance is molecular)
ΔTf = freezing point of pure solvent - freezing point of solution
freezing point of pure solvent = 3 °C
ΔTf = 3 °C - 2.1 °C
ΔTf = 0.9 °C
0.9= 4.25 * 6.13/M/0.09 * 1
0.9= 26.0525/M * 1/0.09
0.9 = 26.0525/0.09 M
0.9 * 0.09M = 26.0525
M = 26.0525/0.9 * 0.09
M= 321.6 g/Mol
CH₄ + 2O₂ = CO₂ + 2H₂O
It is a redox reaction, a combustion reaction.
The whole sentence is written as:
Alcohol is a very common substance, which is surprising considering its many harmful effects.
From the sentence, the dependent clause would be "which is surprising considering its many harmful effects." The dependent clause is a part of a sentence which is not understandable without the whole sentence.
