Answer: A.
Explanation:
Scientists disproved the theory of Spontaneous generation by creating experiments that showed living things cannot arise from nonliving material. An example of this is the flask experiment conducted by Louis Pasteur.
Answer:
3 Mg + Fe2O3 = 3 MgO + 2 Fe
The reaction type is single replacement
Explanation:
Answer:
c.
Explanation:
Gravitational potential energy will rises
Answer:
1.44 atm
Explanation:
Step 1:
We'll begin by calculating the number of mole in 2,800,000 Liter of air.
I mole of air occupy 22.4L.
Therefore, Xmol of air will occupy 2800000L i.e
Xmol of air = 2800000/22.4
Xmol of air = 125000 moles
Step 2:
Determination of the pressure when the balloon is fully inflated .
This can be obtained as follow:
Number of mole (n) of air = 125000 moles
Volume (V) = 2800000 L
Temperature (T) = 120°C = 120°C + 273 = 393K
Gas constant (R) = 0.082atm.L/Kmol
Pressure (P) =.?
PV = nRT
Divide both side V
P= nRT/V
P= (125000x0.082x393) / 2800000
P = 1.44 atm
Therefore, the pressure of the air when the balloon is fully inflated is 1.44 atm
There's the electrons that surround the nucleus in shells. Electrons have a negative charge and way almost nothing.
In the nucleus, theres protons and neutrons. Neutrons have no charge while protons have a positve charge.
All atom have no charge unless they are ions where theres either more electrons than protons or vice versa.
Negative ions are attracted to positive ions e vice versa