Answer: D the rate that varies more with temperature
Explanation: reaction with greater activation energy is not feasible ordinarily as the reacting molecules have little or no energy to overcome the activation energy. But as the temperature of the reaction is increased, the reacting molecules gains more energy to overcome the energy barriers(activation energy) hence proceeding to form products. In this case, the rate of the reaction depends on the temperature. So an increase in temperature will increase the kinetic energy of the molecules thereby increasing the rate of the reaction and a decrease in temperature will leads to a decrease in the rate of the reaction.
Three half lives meant that the mass was halved three times. Therefore, 20 * 2 * 2 * 2 to reverse the process yields 160 grams in the beginning.
Warm air is transferred from the surface to high elevations near the eye, further accelerating winds and circulation. Composed of rows of cumulonimbus clouds--big thunderstorm. They are usually the first part of the cyclone to arrive on land. Yw
Hey there!
A ) PO₄³⁻
The element exhibits resonance (4 times) as there is a double bondwith 1 oxygen and a single with the other 3 oxygen. This switchesin each resonance structure. (I know its weird b/c I leaves Phosphorus with 10 electrons surrounding it)
b) SO₄²⁻
Sulfur is the central atom ,double bond 2 oxygens so that they can only have 4 valence electrons ( the little dots around the oxygen ) ,single bond 2 oxygens ( So that they have 6 valence electrons )
Formal charges are 0 for the two double bonded oxygens [ 6-6 = 0 ]and 0 for the sulfur [ 6-6=0 ]
But the oxygens are -1 [ 6-7 = -1 ]
Since there are two of them, there is a negative charge of -2
Bracket the whole structure and on the top right of the outside ofthe brackets write 2- and include a - (negative sign) next to eachof the single bonded oxygens
Don't forget there are resonance structures. The double bonds canbe placed around any of the oxygens
Hope that helps!
Answer:
The answer to your question is 0.1595 mg of Oxygen
Explanation:
Data
K = 38.67 g
N = 13.86 g
O = ?
Mass of oxygen in 336 mg
Process
1.- Convert 336 mg to grams
1000 mg ----------------- 1 g
336 mg ---------------- x
x = (336 x 1)/1000
x = 0.336 g of sample
2.- Calculate the mass of oxygen in 100g
Mass of oxygen = 100g - 38.67g - 13.86g
= 47.47 g
This means that oxygen represents 47.47% of the sample
3.- Calculate the grams of Oxygen in 0.336 mg.
Mass of Oxygen = (0.336)(0.4747)
Mass of Oxygen = 0.1595 mg