Atoms are electrically neutral because they have equal numbers of protons positively charged and electrons negatively charged.if an atom gains or loses one or more electrons it becomes an ion
The radioactive decay of uranium -238 in the earth's crust produces radioactive radon gas Rn-222 which escapes into the atmosphere is one common cause of background radiation.
I think it would be adaptation and natural selection because both the terms are when an animal adapts to their environment. I hope this helps!
Answer:
T = 1031.30 K
Explanation:
Given data:
Temperature of gas = ?
Number of moles of gas = 0.014 mol
Volume of balloon = 1.20 L
Pressure of gas = 0.988 atm
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
T = PV/nR
T = 0.988 atm × 1.2 L / 0.014 mol × 0.0821 atm.L/ mol.K
T = 1.186 atm. L / 0.00115 atm.L/K
T = 1031.30 K
The number of formula units in 116 g of NaCl is 1.204×10²⁴ formula units
<h3>Avogadro's hypothesis </h3>
1 mole of NaCl = 6.02×10²³ formula units
But
1 mole of NaCl = 58 g
Thus,
58 g of NaCl = 6.02×10²³ formula units
<h3>How to determine the formula units in 116 g of NaCl</h3>
58 g of NaCl = 6.02×10²³ formula units
Therefore,
116 g of NaCl = (116 × 6.02×10²³) / 58
116 g of NaCl = 1.204×10²⁴ formula units
Thus, 1.204×10²⁴ formula units are present in 116 g of NaCl
Learn more about Avogadro's number:
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