Answer:
Eukaryotic
Explanation:
eukaryotic contain both cells
The reaction between oxygen, O2, and hydrogen, H2, to produce water can be expressed as,
2H2 + O2 --> 2H2O
The masses of each of the reactants are calculated below.
2H2 = 4(1.01 g) = 4.04 g
O2 = 2(16 g) = 32 g
Given 1.22 grams of oxygen, we determine the mass of hydrogen needed.
(1.22 g O2)(4.04 g H2 / 32 g O2) = 0.154 g of O2
Since there are 1.05 grams of O2 then, the limiting reactant is 1.22 grams of oxygen.
<em>Answer: 1.22 g of oxygen</em>
<u>0.12 atm</u><u> </u><u>vapor pressure</u><u> of ethanol at 45.0 C.</u>
What is vapor pressure in science definition?
- Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour state, and it increases with temperature.
- The temperature at which the vapour pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is called the boiling point of the liquid.
We will use the Clausius-Clapeyron equation,
ln(P2/P1) = dHvap/R[1/T1-1/T2]
where,
P1 = unknown
P2 = 1 atm
T1 = 30 oC = 30 + 273 = 303 K
T2 = 78.3 oC = 78.3 + 273 = 351.3 K
dHvap = 39.3 kJ/mol = 39300 J/mol
R = 8.314 J/K.mol
Feed values,
ln(1/P1) = 39300/8.314[1/303 - 1/351.3]
P1 = 0.12 atm
thus, the vapor pressure at 30° C is 0.12 atm.
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Answer:
Partial pressure SO₂ → 0.440 atm
Explanation:
We apply the mole fraction concept to solve this:
Moles of gas / Total moles = Partial pressure of the gas / Total pressure
Total moles = 0.3 moles of CO₂ + 0.2706 moles of SO₂ + 0.35 moles H₂O
Total moles = 0.9206 moles
Mole fraction SO₂ = 0.2706 moles / 0.9206 moles → 0.29
Now, we can know the partial pressure:
0.29 = Partial pressure SO₂ / Total pressure
0.29 = Partial pressure SO₂ / 1.5 atm
0.29 . 1.5atm = Partial pressure SO₂ → 0.440 atm
The advantage in using a simple machine is to reduce the amount of work needed to move on object
<u>Option A</u>
<u>Explanation:</u>
A Simple machine is a device with less moving parts used to change motion and force to perform work. Some of the simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw which we all use in our daily life.
These simple machines make our work fast and accurate and also does not require much effort for the work to be done. In other words, we can tell simple machines make our work simpler. For eg: If we take the simple machine wheel and axle, in a bicycle, instead of moving the whole wheel, if we apply force on the pedals, the wheel starts moving. Thus, only less effort is required to move an object.
