Third time im asking... really need help..Assuming all of the atoms attached to the central atom were identical, which of the following geometries would produce a nonpolar molecule? (Only 3 choices are correct.)
-linear
-trigonal planar
-tetrahedral
-trigonal bipyramidal
-octahedral
-bent (angular)
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Current flowing in a circuit depends on two variables identify these variables and their relationship to current
Which list of elements from Group 2 on the Periodic Table is arranged in order of increasing atomic radius?(1) Be, Mg, Ca (3) Ba, Ra, Sr (2) Ca, Mg, Be (4) Sr, Ra, Ba
Highlight the basic points in Lewis and Langmuir theory of electrovalency
Most modern forms of transportation are powered by fossil fuels. Carbon dioxide, methane, carbon monoxide, and other gases are released into the atmosphere during the production and combustion of these fuels. How might these gases cause climatic changes? These gases have no effect on atmospheric temperatures, so they are unable to cause any type of climatic changes. These gases cause more water vapor to condense, making climates wetter than they were in the past. These gases reduce the amount of thermal energy escaping into space, effectively warming the atmosphere.
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Gases best dissolve in liquid under low temperature. This is because when you increase the temperature it will cause an increase in kinetic energy. An increase in kinetic energy means there would be an increase in molecular motion of gas particles. This would cause for gas particles to escape to the gas phase thus making it difficult for it to be dissolved.
Answer:
when the pressure is low and the temperature is low
Explanation:
B) Adding more gas
C) Lowering the temperature
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Answer: C, Lowering the temperature
Explanation: Gradpoint
fraction of the original amount of radium-226 in a sample will still be radium
after 8,000 years?
C.
D.
SUBMIT
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Fraction remaining = (1/2)^(t/half-life)
Where:
t is the time in years.
half-life is the half-life of the substance.
In this case, the half-life of radium-226 is 1,600 years, and you want to find the fraction remaining after 8,000 years. Plugging these values into the formula:
Fraction remaining = (1/2)^(8000/1600)
Fraction remaining = (1/2)^5
Fraction remaining = 1/32
So, after 8,000 years, 1/32 of the original amount of radium-226 will still be radium. Therefore, the answer is C.
B) noble gases
C) alkali earth metals
D) alkaline earth metals
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The most stable because they can contain the most valence electrons in their outer shell. The correct option is B.
Thus, The group of elements on the periodic table known as noble gases, commonly referred to as inert gases, is thought to be the most stable.
They are radon (Rn), krypton (Kr), xenon (Xe), neon (Ne), helium (He), and argon (Ar). Noble gases are extremely stable and less likely to combine chemically with other elements because they contain entire valence electron shells.
Their full electron configurations, which result in low reactivity, are the cause of this stability.
Thus, The most stable because they can contain the most valence electrons in their outer shell. The correct option is B.
Learn more about Valence electrons, refer to the link:
#SPJ3
Most stable because they have the maximum number of valence electrons their outer shell can hold
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1 mole ---------- 204.40 g
7.88 mole ------ ?
mass = 7.88 * 204.40 / 1
mass = 1610.672 g
hope this helps!