Is there a pattern in how one can predict how many covalent bonds an atom will form?
Answers
Answer:
In molecules, there is a pattern to the number of covalent bonds that different atoms can form. Each block with a number indicates the number of covalent bonds formed by that atom in neutral compound
Explanation:
I don't really know the answer sorry
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A radical is a group of atoms that remains bonded together and behaves as a single atom in a chemical reaction. a. True b. False
Which of the following gases are typically used for colorful lighting when an electric current is applied?A) hydrogen and helium B) argon and krypton C) fluorine and chlorine D) oxygen and nitrogen
What is the purpose of the ligaments?A Attach muscle to muscle B Attach muscle to bone C Attach bone to bone DAttach bone to blood vessels
What is true of an Arrhenius acid?a. An Arrhenius acid donates OH- ions.b. An Arrhenius acid donates H+ ions.c. An Arrhenius acid accepts H+ ions.d. An Arrhenius acid accepts OH- ions.
b. it is neutral because the pure liquid contains neither hydronium ions not hydroxide ions
c. it is acidic because it has a hydronium ion concentration of 1.0 x 10-7 M
d. its basic because it has a hydroxide ion concentration of 1.0 x 10-7 M
Answers
Answer:
the answer is a. It is neutral because the concentration of hydronium ions equals that of hydroxide ions
Explanation:
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The pH of a 0.027 M KOH solution is 12.4 and since KOH is a strong base it will dissociate completely in the solution
How do we calculate?
KOH is a strong base, so it will dissociate completely in solution to form potassium ions and hydroxide ions. The concentration of hydroxide ions will be equal to the concentration of KOH, which is 0.027 M.
The pH of a solution can be calculated using the following equation:
pH = -log[H+]
where [H+] is the concentration of hydrogen ions in the solution.
The concentration of hydrogen ions in a basic solution is very low, so we can use the approximation that:
pH = 14 - log[OH-]
pH = 14 - log(0.027)
pH = 12.4
Learn more about hydrogen ions at:
#SPJ6
POH = - log [ OH⁻]
POH = - log [ 0.027 ]
POH = 1.56
PH + POH = 14
PH + 1.56 = 14
PH = 14 - 1.56
PH = 12.44
hope this helps!
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
Answers
Answer is: C. nitrogen.
Together, nitrogen (N₂) and oxygen (O₂) by volume account for 99.03% volume of the gases composing the dry air in the lower atmosphere.
Volume of nitrogen in air is 78.08%.
Volume of oxygen in air is 20.95%.
Together: 78.08% + 20.95% = 99.03%.
This gases can be separated by fractional distillation of liquefied air.
0 atoms of carbon.
c.
6 atoms of carbon.
b.
1 atom of carbon.
d.
12 atoms of carbon.
Answers
Answer : The correct option is, (d) 12 atoms of carbon.
Explanation:
The formula of given molecule of table sugar is,
The given molecule is made up of three elements which are, carbon, hydrogen and oxygen.
In the given molecule of table sugar , there are 12 number of carbon atoms, 22 number of hydrogen atoms and 11 number of oxygen atoms.
From the given options we conclude that, the option (d) is the correct option. While the other options are incorrect.
Hence, the correct option is, (d) 12 atoms of carbon.
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the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
Answer:
the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
Answers
anode reaction: Ag(s)+HCl(aq)⇒H⁺+AgCl(s)+e⁻
which means that H⁺ is the oxidizing agent
cathode reaction: 2H⁺(aq)+2e⁻⇒H₂(g)
and the cell reaction is the combination of the anode and cathode reactions.
cell reaction: 2Ag(s)+2HCl(aq)⇒2AgCl(s)+H₂(g)