A. the number of neutrons always decreases. B. the number of neutrons always increases. C. the number of protons always increases. D. the number of protons always decreases.
I dont understand this.. In a bond between an atom of carbon and an atom of fluorine, the fluorine atom has a?A. weaker attraction for electrons B. stronger attraction for electrons C. smaller number of first-shell electrons D. larger number of first-shell electrons
Answers
The correct answer is B.
Look into period table of elements at electronegativity. Electronegativity of carbon is 2.5 and of fluorine 4.0. Electronegativity is a strenght/ability to attract electrons.
Fluorine eletronegativity is much higher so it's atom has stronger attraction of electrons.
What type of state is glass? please explain about it.
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On a small time scale, glass is in a solid state. When you look at a window, it appears solid.
However, it has been observed that over a very long period, glass starts to act like a liquid.
It can thus be characterized by two different states depending on the time scale considered.
I think the other answer is incorrect. Glass being a liquid is a misconception, from when glassmaking was imperfect and windows were thicker at the bottom of the pane than the middle. But that was from when the glass was MADE, after being heated and put into a liquid form.
How many grams of nickel 58.69 (No,58.69 g/mol) are in 1.57 moles of nickel
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Answer:
92.1
Explanation:
1.57 * 58.69
Some substances cannot exist in liquid form at normal atmospheric conditions. True or False ?
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I think it might be true.
false that is what i think
When a chemical reaction occurs, the physical and chemical properties of the reactants are the same as the properties of the products.True or False??
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This statement would be false.
They would not be the same
if the proper dosage of a drug is 2.0mg/kg of body weight, how many milligrams (mg) of the drug would a 110 lb individual need? (5%)