Calculate the density of sulfuric acid if 35.4 ml of the acid has a mass of 65.14 grams. (Please show how you got this answer)
Answers
Answer:
d = 1.85 g/cm³
Explanation:
Given data:
Volume of sulfuric acid = 35.4 mL
Mass of sulfuric acid = 65.14 g
Density of sulfuric acid = ?
Solution:
1 ml = 1cm³
Formula:
d = m/v
d = 65.14 g / 35.2 cm³
d = 1.85 g/cm³
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Answer:
nervous system
Explanation:
Have a good day!!
Answers
Answers
Answer: The two isotopes of boron differs in mass number rather than atomic number.
Explanation:
Isotopes are defined as the chemical species that have same atomic number but differ in their mass number.
Boron is the 5th element of the periodic table and have 2 naturally occurring isotopes. The isotopes are : B-10 and B-11
For isotope:
Percentage abundance of this isotope = 20 %
Atomic number = 5
Mass number = 10
For isotope:
Percentage abundance of this isotope = 80 %
Atomic number = 5
Mass number = 11
Hence, the two isotopes of boron differs in mass number rather than atomic number.
Answers
The radius of a positive ion always less than the radius of its neutral atom because the nucleus pulls the remaining electrons in closer.
What is an atom ?
Each atom is made up of a nucleus and one or more electrons that are linked to it. One or more protons and a significant number of neutrons make up the nucleus.
Only the most prevalent kind of hydrogen is neutron-free. The smallest component of ordinary stuff that makes up a chemical element is an atom.
Quarks and electrons are the two categories of fundamental particles that make up an atom. An atom's nucleus is surrounded by an area of electrons. The electrical charge of every electron is negative one.
Protons and neutrons, which together make up an atom's nucleus, are made of quarks.
Thus, option A is correct.
To learn more about an atom, follow the link;
#SPJ2
(A)-This sounds accurate, but is actually not true. When an atom loses an electron and forms a positive ion, there will be less negative charge from the electrons to attract the positively charged nucleus. Losing electrons will actually decrease the attraction between the electrons and the nucleus.
(B)-This is true in some cases, but not all. If, for example, sodium were to lose an electron, it would drop down to having its largest orbital being in the second energy level, and would decrease in size. If magnesium were to lose an electron, it would still have one electron in the third energy level, so it wouldn't drop down an energy level.
(C) and (D)-Not sure where these answers even came from.
The actual reason behind the radius of a positive ion being smaller than the radius of its neutral atom is that the repulsive force between the electrons themselves is decreased, causing them to move closer together.
Answers
Abiotic-non-living things.
b. NaC₂H₃O₂(s)
c. C₆H₁₂O₆(aq)
d. CH₃OH(aq)
e. NaCl(s)
It would be great if you could add a few words of explanation