You are given 50.0 ml of 1.50 m hno3. how many ml of 0.81 m naoh are needed to neutralize it?
Answers
M(HNO₃) = 1.50 M
Number of moles HNO₃ :
n = M x V
n = 1.50 x 0.05
n = 0.075 moles of HNO₃
HNO₃ + NaOH = H₂O + NaNO₃
1 mole HNO₃ -------- ---1 mole NaOH
0.075 moles HNO₃ ---- ?
moles NaOH = 0.075 * 1 / 1
= 0.075 moles of NaOH
V ( NaOH ) :
M = n / V
0.81 = 0.075 / V
V = 0.075 / 0.81
V = 0.0925 L or 92.5 mL
hope this helps!
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Answers
Answer:
Li2O+H2O---->(2)LiOH
Explanation:
you have to balance the equation and not all the blanks have to be filled all the time but if it makes it easier for you in the first 2 question marks you can put a 1 which isnt necessary but if ur a visual person it will help.
hope this helps im litterally learning the same thing as u lol
Answer:
1,1,2
Explanation:
this was correct for me, if it wasnt correct check if youre on the right question
(1) 28 (3) 30(2) 29 (4) 36
Answers
Answer: The number of electrons in Cu^+ ion is 28.
Explanation: Copper has atomic number of 29 which means it has 29 electrons and 29 protons.
Argon is the noble gas with 18 electrons.
When Cu lose one electron it forms as now the number of protons are greater than the number of electrons.
The configuration of becomes
The total number of electrons in a Cu+ ion is 28.
The Cu+ ion is an ion of copper with a +1 charge. The charge of the ion tells us the number of electrons gained or lost by the atom. Since the ion has a positive charge, it means that it has lost one electron.
The atomic number of copper (Cu) is 29, meaning that a neutral copper atom has 29 electrons. When a copper atom loses one electron to form the Cu+ ion, the total number of electrons in the ion is 29 - 1 = 28.
Learn more about Copper here:
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Answers
reactivity
valence electrons
atomic radii
atomic mass
Answers
Explanation:
When we move down a group then there will be increase in number of shells present in an atom. Due to this there will be increase in atomic radii of the atom.
As a result, there will be increase in atomic mass of the atom also. Whereas reactivity of metals increases on moving down the group as the valence shell moves away from the nucleus. So, it becomes easy for the metal atom to lose an electron.
On the other hand, reactivity of non-metals decreases on moving down the group.
So, we can conclude that properties increase when moving down a group of the periodic table are atomic radii and atomic mass.
Atomic Mass.
Reactivity decreases as you go down a group.
Atomic Radius also decreases as you go down a group.
Valence electrons are the same within a group.
Atomic mass, however, increases as you go down a group.
Hope this helps!
O B. Only in the home
C. Mostly outside
O D. Everywhere
Answers
Answer:
I believe the correct answer is D.
Explanation:
You are breathing in dinitrogen and dioxygen. You exhale dinitrogen and carbon dioxide. And the atmosphere contains traces of other gases. You drink water. You have a wash with water, and soap. You eat carbohydrates and proteins. You ride to work on a vehicle powered by hydrocarbons, which spits out carbon dioxide exhaust fumes, and also some nitrogen oxides. And so your exposure to chemicals is pervasive, and unavoidable.
Answer:
d
Explanation: