Answer:
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Explanation:
uploaded to the nearest inch and the same for the miscommunication between the two of the three
Explanation:
Weight is 120 pounds and mass is 54 kg
The mass of an object is same everywhere. If we were on the moon, its mass will remain to be 54 kg.
Weight of an object is given by :
g is acceleration due to gravity on that surface
For moon, it is 1/6 the gravitational force on Earth, g = 1.63 m/s²
1 pound = 4.45 N
It means my weight is 533.78 N
On the surface of Moon is will be :
4. According to the explanation given in one previous session, in this case we have the following reaction:
Zn + NO3- -> Zn(OH)42- + NH3
Our important informations to have in mind always first:
Single elements = 0 of oxidation number
Zn = 0
Oxygen = 2-
NO3- = overall charge must be -1, and we have 3 oxygens, so a -6 charge, therefore N must give a charge of +5
N (reactant) = 5+
Zn(OH)42- = overall charge -2, the charge for OH is always -1, we have 4 OH, therefore -4 of charge, to give -2 of overall, Zn must have a charge of +2
Zn (product) = 2+
OH = 1-
NH3 = 0
Now for the balancing of the reaction:
4 Zn + NO3- + 7 OH- + 6 H2O -> NH3 + 4 Zn(OH)42-
When using filter paper chromatography to separate ink, one will observe that more colours are mixed into darker inks. The darker an ink is, the more the colours that will be separated out during chromatography process. Thus, the observation that the darker the ink, the more colours are mixed into it will lead one to believe that ink is a mixture.
The differential pressure is
797.9 - 715.7 = 82.2 torr = 138815.25 Pa
The height of the mercury in the open-end arm is calculated using
ΔP = ρgh
The density of mercury is 13560 kg/m3
The height of the mercury is
138815.25 Pa = 13560 kg/m3 (9.81 m/s2) h
h = 1.04 m
