Answer: C. There is more plate movement in California.
Explanation:
Which of the following of elements would have all four valence electrons
B, Si, As, Te
C, Si, Ge,Sn
O, S, Se, Te
Ga, Ge, As, Se
Answer:
D
they are used for manufacturing Of diodes
Answer:
is the answer D
Explanation:
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Which is Chemical Equation is Balanced?
CH, +0,------CO,+2H2O
4A1+30,-----2A1,0,
H2+O2-----2H,0
3. What is physical science mainly about? *
the relationship between matter and energy
O the relationship between matter and light
the relationship between molecules and matter
O the relationship between light and energy
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Answer: D
Explanation: Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
the left-right inversion one word answer
Answer:
Lateral Inversion
Explanation:
Which of the following would you get from playing too much tennis?
A. Cerebral Palsy
B. Muscular Dystrophy
C. Tendonitis
D. ALS
Answer:
cerebral palsy
Explanation:
Lead (11) oxide dissolves in both
excess dilute nitric acid and
sodium hydroxide solution -
Which of the following is the
property of lead (11) oxide.
A Basic
B Acidic
C Neutral
D Amphoteric
Answer:
bacic
Explanation:
it is very soluble in water
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POSS
Explain when gold is considered an element and when it is considered a solution.
Answer:
Gold is an element even when it is in a solution
According to the picture above, which layer contains :
Answer:
a) layer 4
b) layer 1
Explanation:
Older the layer=older the fossils
Newer the layer=newer the fossilss
It has been windy in Wren’s town. Wren wants to know how fast the wind is moving. Which tools could he use?
Answer:
We can use a fan, divide the number of times that fan spins by the time it takes and the speed is obtained
Compare the elements: Sn, Sb, Te, and I:
Which has the lowest ionization energy?
Why?
Answer:
Sn
Explanation:
Tin, Sn, will have the lowest ionization energy from the given choices.
Sn is an element is the fourth group on the periodic table.
Ionization energy is a measure of the readiness of an atom to lose an electron. The lower the value, the easier it is for an atom to want to lose an electron and vice versa.
Across a period, I.E increases progressively from left to right due to the decreasing atomic radii caused by the increasing nuclear charge which is not compensated for by successive electronic shells.
Sn, Sb, Te and I are all in the 5th period.
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Answer:
2Fe₂O₃
Explanation:
If the number of atoms of each element are the same on reactant and product sides, it is a balanced equation. This is not a balanced equation because the number of atoms of each element are not the same on reactant and product sides.
To balance an equation, let's first list the atoms:
FeOThen, we count the number of atoms on both sides:
1 Fe 22 O 3We multiply the number of atoms for each element on either side by the number of molecules (aka coefficient, or "big number"):
4 Fe 26 O 3To balance the equation, we need the total number for Fe on the right side to be 4, and the total number for O on the right side to be 6. We can do that by adding a "big number", or coefficient in front, which when multiplied by the number of atoms for each element, makes a balanced equation.
2 is a good value: 2 × 2 = 4, and 2 × 3 = 6.
As such:
4Fe + 3O₂ → 2Fe₂O₃